AMATI COMMUNICATIONS CORP
SC 13D, 1996-10-30
COMPUTER COMMUNICATIONS EQUIPMENT
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<PAGE>1





                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934


                        AMATI COMMUNICATIONS CORPORATION
                                (Name of Issuer)


                          Common Stock, $0.20 par value
                         (Title of Class of Securities)


                                    023115108
                                 (CUSIP Number)

                           Christopher E. Manno, Esq.
                            Willkie Farr & Gallagher
                               One Citicorp Center
                              153 East 53rd Street
                            New York, New York 10022
                                 (212) 821-8000

                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)


                                October 24, 1996
              (Date of Event which Requires Filing this Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].

Check the following box if a fee is being paid with this statement [ ].



<PAGE>2




SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  Quantum Industrial Partners LDC

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  WC

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                 [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Cayman Islands

                                7.  SOLE VOTING POWER

                                            0

                                8.  SHARED VOTING POWER
  SHARES
BENEFICIALLY                          639,855
 OWNED BY
REPORTING                       9.  SOLE DISPOSITIVE POWER
  PERSON
   WITH                                     0

                                10. SHARED DISPOSITIVE POWER

                                      639,855

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  639,855

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                              [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  3.42%

14.      TYPE OF REPORTING PERSON*
                  IV



<PAGE>3




SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  S-C Phoenix Holdings, L.L.C.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  WC

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Delaware

                                7.  SOLE VOTING POWER

                                        319,927

                                8.  SHARED VOTING POWER
  SHARES
BENEFICIALLY                                  0
 OWNED BY
REPORTING                       9.  SOLE DISPOSITIVE POWER
  PERSON
   WITH                                 319,927

                                10. SHARED DISPOSITIVE POWER

                                              0

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  319,927

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                            [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  1.72%

14.      TYPE OF REPORTING PERSON*
                  OO

<PAGE>4





SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  QIH Management Investor, L.P.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  AF

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Delaware

                                7.  SOLE VOTING POWER

                                             0

                                8.  SHARED VOTING POWER
  SHARES
BENEFICIALLY                           639,855
 OWNED BY
REPORTING                       9.  SOLE DISPOSITIVE POWER
  PERSON
   WITH                                      0

                                10. SHARED DISPOSITIVE POWER

                                       639,855

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  639,855

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                              [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  3.42%

14.      TYPE OF REPORTING PERSON*
                  PN

<PAGE>5





SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  QIH Management, Inc.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  AF

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Delaware

                                7.  SOLE VOTING POWER

                                              0

                                8.  SHARED VOTING POWER
  SHARES
BENEFICIALLY                            639,855
 OWNED BY
REPORTING                       9.  SOLE DISPOSITIVE POWER
  PERSON
   WITH                                       0

                                10. SHARED DISPOSITIVE POWER

                                        639,855

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  639,855

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                               [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  3.42%

14.      TYPE OF REPORTING PERSON*
                  CO



<PAGE>6




SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  Winston Partners, L.P.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  WC

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Delaware

                                7.  SOLE VOTING POWER

                                          106,600

                                8.  SHARED VOTING POWER
  SHARES
BENEFICIALLY                                    0
 OWNED BY
REPORTING                       9.  SOLE DISPOSITIVE POWER
  PERSON
   WITH                                   106,600

                                10. SHARED DISPOSITIVE POWER

                                                0

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  106,600

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                              [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  0.58%

14.      TYPE OF REPORTING PERSON*
                  PN


<PAGE>7




SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  Winston Partners II LDC

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  WC

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Cayman Islands

                                7.  SOLE VOTING POWER

                                           142,303

                                8.  SHARED VOTING POWER
  SHARES
BENEFICIALLY                                     0
 OWNED BY
REPORTING                       9.  SOLE DISPOSITIVE POWER
  PERSON
   WITH                                    142,303

                                10. SHARED DISPOSITIVE POWER

                                                 0

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  142,303

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                              [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  0.77%

14.      TYPE OF REPORTING PERSON*
                  IV



<PAGE>8




SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  Winston Partners II L.L.C.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  WC

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                 [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Delaware

                                7.  SOLE VOTING POWER

                                           71,024

                                8.  SHARED VOTING POWER
  SHARES
BENEFICIALLY                                    0
 OWNED BY
REPORTING                       9.  SOLE DISPOSITIVE POWER
  PERSON
   WITH                                    71,024

                                10. SHARED DISPOSITIVE POWER

                                                0

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  71,024

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                              [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  0.39%

14.      TYPE OF REPORTING PERSON*
                  OO

<PAGE>9





SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  Chatterjee Management Company

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  AF

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                 [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Delaware

                                7.  SOLE VOTING POWER

                                    213,327

                                8.  SHARED VOTING POWER

  SHARES                                  0
BENEFICIALLY
 OWNED BY                       9.  SOLE DISPOSITIVE POWER
REPORTING
  PERSON                            213,327
   WITH
                                10. SHARED DISPOSITIVE POWER

                                          0

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  213,327

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                              [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  1.15%

14.      TYPE OF REPORTING PERSON*
                  CO;IA

<PAGE>10




SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  Chatterjee Advisors L.L.C.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  AF

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Delaware

                                7.  SOLE VOTING POWER

                                    213,327

                                8.  SHARED VOTING POWER

  SHARES                                  0
BENEFICIALLY
 OWNED BY                       9.  SOLE DISPOSITIVE POWER
REPORTING
  PERSON                            213,327
   WITH
                                10. SHARED DISPOSITIVE POWER

                                          0

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  213,327

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                               [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  1.15%

14.      TYPE OF REPORTING PERSON*
                  OO;IA



<PAGE>11




SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  Chatterjee Fund Management, L.P.

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  AF

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  Delaware

                                7.  SOLE VOTING POWER

                                    106,600

                                8.  SHARED VOTING POWER

  SHARES                                  0
BENEFICIALLY
 OWNED BY                       9.  SOLE DISPOSITIVE POWER
REPORTING
  PERSON                            106,600
   WITH
                                10. SHARED DISPOSITIVE POWER

                                          0

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  106,600

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                               [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  0.58%

14.      TYPE OF REPORTING PERSON*
                  IA; PN



<PAGE>12




SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  Purnendu Chatterjee (in his capacity set forth herein)

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY


4.       SOURCE OF FUNDS*
                  AF

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                [X]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  United States

                                7.  SOLE VOTING POWER

                                       319,927

                                8.  SHARED VOTING POWER
  SHARES
BENEFICIALLY                           639,855
 OWNED BY
REPORTING                       9.  SOLE DISPOSITIVE POWER
  PERSON
   WITH                                319,927

                                10. SHARED DISPOSITIVE POWER

                                       639,927

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  959,782

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                              [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  5.09%

14.      TYPE OF REPORTING PERSON*
                  IA


<PAGE>13




SCHEDULE 13D

CUSIP No. 023115108

1.       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  George Soros (in his capacity set forth herein)

2.       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       a[ ]
                                                                       b[x]
3.       SEC USE ONLY

4.       SOURCE OF FUNDS*
                  AF

5.       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
         PURSUANT TO ITEMS 2(d) OR 2(e)                                [ ]

6.       CITIZENSHIP OR PLACE OF ORGANIZATION
                  United States

                                7.  SOLE VOTING POWER

                                       319,927

                                8.  SHARED VOTING POWER
  SHARES
BENEFICIALLY                           639,855
 OWNED BY
REPORTING                       9.  SOLE DISPOSITIVE POWER
  PERSON
   WITH                                319,927

                                10. SHARED DISPOSITIVE POWER

                                       639,855

11.      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                  959,782

12.      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES*                                               [ ]

13.      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  5.09%

14.      TYPE OF REPORTING PERSON*
                  IA


<PAGE>14




                  This statement on Schedule 13D (the "Statement") relates to
shares of Common Stock, $0.20 par value (the "Common Stock" or the "Shares"), of
Amati Communications Corporation, a Delaware corporation (the "Issuer"). This
Statement is being filed by the Reporting Persons (as defined below) to report
the acquisition of (i) shares of Common Stock and (ii) the Warrants (as defined
below) pursuant to the Investment Agreement (as defined below).

Item 1. Security and Issuer

                  This statement relates to the Shares. The principal executive
offices of the Issuer are located at 2043 Samaritan Drive, San Jose, CA 95124.

Item 2.  Identity and Background

                  This statement is being filed on behalf of each of the
following persons (collectively, the "Reporting Persons"):

     (i) QUANTUM INDUSTRIAL PARTNERS LDC ("Quantum Industrial");

     (ii) S-C PHOENIX HOLDINGS, L.L.C. ("Phoenix Holdings");

     (iii) QIH MANAGEMENT INVESTOR, L.P. ("QIHMI");

     (iv) QIH MANAGEMENT, INC. ("QIH Management");

     (v) WINSTON PARTNERS, L.P. ("Winston L.P.");

     (vi) WINSTON PARTNERS II LDC ("Winston II LDC");

     (vii) WINSTON PARTNERS II L.L.C. ("Winston II L.L.C.");

     (viii) CHATTERJEE MANAGEMENT COMPANY ("CMC");

     (ix) CHATTERJEE ADVISORS L.L.C. ("Chatterjee Advisors");



<PAGE>15


     (x) CHATTERJEE FUND MANAGEMENT, L.P. ("CFM");

     (xi) Dr.  Purnendu  Chatterjee  in the  capacity  set  forth  herein  ("Dr.
Chatterjee"); and

     (xii) Mr. George Soros in the capacity set forth herein ("Mr. Soros").



Phoenix Holdings

                  Phoenix Holdings is a Delaware limited liability company with
its principal place of business at 888 Seventh Avenue, 33rd Floor, New York, New
York 10106. Phoenix Holdings was formed as a general investment partnership. Mr.
Soros is a managing member of Phoenix Holdings and is solely responsible for
investment decisions with respect to the Shares held for the account of Phoenix
Holdings.

                  Phoenix Holdings has not, during the past five years, been
(a) convicted in a criminal proceeding, or (b) a party to any civil proceeding
as a result of which it has been subject to a judgment, decree or final order
enjoining future violations of, or prohibiting or mandating activities subject
to, federal or state securities laws, or finding any violation with respect to
such laws.

Quantum Industrial, QIHMI, QIH Management and Mr. Soros

                  Quantum Industrial is a Cayman Islands exempted limited
duration company with its principal address at Kaya Flamboyan 9,

<PAGE>16


Willemstad, Curacao, Netherlands Antilles.  Quantum Industrial is a private
investment fund which is engaged in a variety of direct and indirect
investments. Current information concerning the identity and background of the
directors and officers of Quantum Industrial is set forth on Annex A hereto,
which is incorporated by reference in response to this Item 2.

                  QIHMI, a Delaware limited partnership, is vested with
investment discretion with respect to the portfolio assets held for the account
of Quantum Industrial pursuant to the constituent documents of Quantum
Industrial. The principal business of QIHMI is to provide management and
advisory services to, and to invest in, Quantum Industrial. QIH Management, a
Delaware corporation of which Mr. Soros is the sole shareholder, is the general
partner of QIHMI. QIHMI and QIH Management have their principal offices at 888
Seventh Avenue, 33rd Floor, New York, New York 10106. QIHMI, by reason of its
investment discretion over the securities owned by Quantum Industrial, and QIH
Management, as the sole general partner of QIHMI, may each be deemed the
beneficial holder of securities held by Quantum Industrial for purposes of
Section 13(d) of the Securities Exchange Act of 1934, as amended (the "1934
Act").

                  Mr. Soros is the sole shareholder and person ultimately in
control of QIH Management. The principal occupation of Mr. Soros, a United
States citizen, is his direction of the activities of Soros Fund Management
("SFM"), an investment advisor of which Mr. Soros is the sole proprietor. Mr.
Soros has his principal office at 888 Seventh Avenue, 33rd Floor, New York, New
York 10106. Information concerning the identity and background of the Managing
Directors of SFM is set forth in Annex B hereto, which is incorporated by
reference in response to this

<PAGE>17


Item 2. Pursuant to regulations promulgated under Section 13(d) of the 1934
Act, Mr. Soros may be deemed a beneficial owner of securities held for the
account of Quantum Industrial (as the sole shareholder of QIH Management and
the person ultimately in control of QIH Management, the sole general partner of
QIHMI) and for the account of Phoenix Holdings (as a managing member of
Phoenix Holdings with sole voting and dispositive powers with respect to
Shares of the Issuer).

                  During the past five years, none of Quantum Industrial,
QIHMI, QIH Management nor Mr. Soros has been (a) convicted in a criminal
proceeding, or (b) a party to any civil proceeding as a result of which it has
been subject to a judgment, decree or final order enjoining future violations
of, or prohibiting or mandating activities subject to, federal or state
securities laws, or finding any violation with respect to such laws.

Winston L.P., CFM, Winston II LDC, Chatterjee Advisors, Winston II L.L.C. and
CMC

                  Winston L.P. is a Delaware limited partnership which is
principally engaged in investing in securities.  CFM is a Delaware limited
partnership and the general partner of Winston L.P.  Dr. Chatterjee is the
sole general partner of CFM.  The principal business of CFM is to serve as the
sole general partner of Winston L.P.  The principal office of Winston L.P. and
CFM is located at 888 Seventh Avenue, 30th Floor, New York, New York 10106.
Pursuant to regulations promulgated under Section 13(d) of the 1934 Act, CFM,
as the sole general partner of Winston

<PAGE>18


L.P., may be deemed a beneficial owner of securities held by Winston L.P.

                  Winston II LDC is a Cayman Islands exempted limited duration
company with its principal office at Kaya Flamboyan 9, Willemstad, Curacao,
Netherlands Antilles. Winston II LDC was organized as the operating unit of
Winston Partners II Offshore Ltd., an open-end investment company incorporated
in the British Virgin Islands ("Winston Offshore"). Winston Offshore invests
all of its assets in Winston II LDC, and is the largest shareholder in Winston
II LDC.  Chatterjee Advisors, Chatterjee Fund Investors LDC (an affiliate of
Chatterjee Advisors) and certain non-U.S.  employees of CMC are also
shareholders of Winston II LDC. The sole business of Winston II LDC is
investing in securities.

                  Winston II L.L.C. is a limited liability company formed under
the laws of the State of Delaware with its principal office at 888 Seventh
Avenue, 30th Floor, New York, New York 10106. Chatterjee Advisors, Chatterjee
Fund Investors LDC (an affiliate of Chatterjee Advisors) and certain U.S.
employees of CMC are also shareholders of Winston II L.L.C. The sole business of
Winston II L.L.C. is investing in securities.

                  Chatterjee Advisors, a Delaware limited liability company
that is managed and controlled by Dr. Chatterjee, serves as the manager, and
is responsible for supervising the operations, of each of Winston II LDC and
Winston II L.L.C.  The principal office of Chatterjee Advisors is located at
888 Seventh Avenue, 30th Floor, New York, New York 10106.  The principal
business of Chatterjee Advisors is investing in securities.  CMC, a Delaware

<PAGE>19


corporation that is managed and controlled by Dr. Chatterjee, serves as
investment advisor to each of Winston II LDC and Winston II L.L.C.  pursuant
to investment management contracts between CMC, Chatterjee Advisors and each
of Winston II LDC and Winston II L.L.C. As such, CMC has full discretion and
authority to make investments in securities on behalf of each of Winston II
LDC and Winston II L.L.C. The principal office of CMC is located at 888
Seventh Avenue, 30th Floor, New York, New York 10106.  The principal business
of CMC is investing in securities.

                  Chatterjee Advisors, as the manager of each of Winston II LDC
and Winston II L.L.C., and by virtue of its ability as a manager of Winston II
LDC and Winston II L.L.C. to terminate its contractual relationship with CMC
within 60 days and CMC, by virtue of its authority to make investments on behalf
of Winston II LDC and Winston II L.L.C., may each be deemed to be the beneficial
owner of securities held for the account of each of Winston II LDC and Winston
II L.L.C. for purposes of Section 13(d) of the 1934 Act.

                  During the past five years, none of Winston L.P., CFM,
Winston II LDC, Winston Offshore, Chatterjee Advisors, Winston II L.L.C. nor
CMC has been (a) convicted in a criminal proceeding, or (b) a party to any
civil proceeding as a result of which such person has been subject to a
judgment, decree or final order enjoining future violations of, or prohibiting
or mandating activities subject to, federal or state securities laws, or
finding any violation with respect to such laws.


<PAGE>20



Dr. Chatterjee

                  The principal occupation of Dr. Chatterjee, a United States
citizen, is as an investment manager. Dr. Chatterjee's principal business
address is located at 888 Seventh Avenue, 30th Floor, New York, New York 10106.
Pursuant to regulations promulgated under Section 13(d) of the 1934 Act, Dr.
Chatterjee may be deemed (i) a beneficial owner of Shares of the Issuer held for
the account of Quantum Industrial (as a sub advisor to Quantum Industrial), and
(ii) the beneficial owner of securities (including the Shares) held for the
account of Winston L.P. (as the sole general partner of CFM and the person
ultimately in control of Winston L.P.), Winston II LDC (as manager and the
person ultimately in control of Chatterjee Advisors and CMC) and Winston II
L.L.C. (as manager and the person ultimately in control of Chatterjee Advisors
and CMC).

                  On January 13, 1993, the Securities and Exchange Commission
(the "Commission") filed a civil complaint in the United States District Court
for the District of Massachusetts against certain defendants, including Dr.
Chatterjee, wherein the Commission alleged that Dr. Chatterjee engaged in
conduct in violation of, or aided and abetted certain alleged violations of,
Sections 10(b) and 14(e) of the 1934 Act and certain rules promulgated
thereunder. Dr. Chatterjee settled the Commission's action on the same date it
was filed without admitting or denying the allegations of the complaint. Dr.
Chatterjee consented to the entry of a final judgment restraining and enjoining
him from

<PAGE>21


inter alia, violating, or aiding and abetting violations of, Sections 10(b) and
14(e) of the 1934 Act and the rules promulgated thereunder.  Dr. Chatterjee
also agreed to pay a civil penalty of $643,855.  During the past five years,
Dr. Chatterjee, has not been convicted in any criminal proceeding.

Item 3.  Sources and Amounts of Funds or Other Consideration

                  As of October 3, 1996, each of Quantum Industrial, Phoenix
Holdings, Winston L.P., Winston II LDC and Winston II L.L.C. (collectively, the
"Investors") entered into an Investment Agreement (the "Investment Agreement")
with the Issuer, a copy of which is filed with this Schedule 13D as Exhibit A
and incorporated herein by reference. Pursuant to the Investment Agreement, the
Investors severally agreed to purchase in proportion to their respective
percentage participations in the transaction set forth on Schedule I to the
Investment Agreement (the "Participation Schedule"), subject to certain
conditions set forth in the Investment Agreement, Shares of Common Stock at a
purchase price per share representing a 15% discount from market prices of the
Common Stock over the pricing periods set forth in the Investment Agreement for
an aggregate purchase price of up to $15,000,000. Under the Investment
Agreement, the Issuer has the right, by delivering notice (a "Put Notice") to
the Investors, to require the Investors to purchase Shares in two installments,
with the first installment (the "First Tranche") relating to a number of Shares,
valued in accordance with the Investment Agreement at $10,000,000, for an
aggregate purchase price of

<PAGE>22


$10,000,000 and the second installment (the "Second Tranche") relating to a
number of Shares, valued in accordance with the Investment Agreement at
$5,000,000. The Issuer delivered a Put Notice relating to the First Tranche on
October 24, 1996 and the final closing with respect to the Shares to be
purchased by the Investors is expected to occur within 60 days of the date
hereof. At the closing in respect of the First Tranche, Quantum Industrial,
Phoenix Holdings, Winston L.P., Winston II LDC and Winston II L.L.C. will
receive 339,855 Shares, 169,927 Shares, 56,620 Shares, 75,584 Shares, and
37,724 Shares, respectively, subject to adjustment depending on the prevailing
market prices of the Common Stock over the pricing periods set forth in the
Investment Agreement. To the extent the market price of the Common Stock
declines during the pricing periods set forth in the Investment Agreement, the
Issuer may be required to issue additional Shares to the Investors.

                  On September 19, 1996, the Issuer executed and delivered to
CMC a $1,000,000 Secured Recourse Demand Promissory Note, a copy of which is
filed with this Schedule 13D as Exhibit B and incorporated herein by reference,
and on October 8, 1996, the Issuer executed and delivered to CMC a $2,000,000
Secured Recourse Demand Promissory Note (collectively, the "Notes"), a copy of
which is filed with this Schedule 13D as Exhibit C and incorporated herein by
reference. The Notes are payable on demand and bear interest at a rate per annum
equal to fifteen percent (15%) (computed on the basis of a 360-day year) from
the respective dates of each Note on the respective unpaid principal

<PAGE>23


amounts of such Note, subject to increase in the event of a payment default.
CMC funded the loans evidenced by the Notes on behalf of the Investors in
proportion to the percentages set forth on the Participation Schedule. The
Notes are secured by the patents, trademarks and other intellectual property of
the Issuer pursuant to a Collateral Assignment and Security Agreement, a copy
of which is filed with this Schedule 13D as Exhibit D.  At the Closing in
respect of the First Tranche, the Notes will be surrendered to the Issuer for
cancellation and the purchase price in respect of the First Tranche shall be
reduced by the amount of the unpaid principal and interest of the Notes.
Following the surrender of the Notes, the Collateral Assignment and Security
Agreement will terminate.

                  Quantum Industrial and Phoenix Holdings obtained the funds
for payment of the purchase price of the Shares to be issued under the
Investment Agreement and to fund the Notes from working capital. Winston L.P.
obtained the funds for payment of the purchase price of the Shares to be
issued under the Investment Agreement and to fund the Notes from its partners.
To the best of Winston L.P.'s knowledge such partners obtained their funds
from working capital or personal funds. Winston II LDC and Winston II L.L.C.
obtained the funds for payment of the purchase price of the Shares to be
issued under the Investment Agreement and to fund the Notes from their
shareholders and members, respectively. To the best of Winston II LDC's and
Winston II L.L.C.'s knowledge, such shareholders and members obtained their
funds from working capital or personal funds.

                  The Shares held for the accounts of each of the Investors may
be held through margin accounts maintained with


<PAGE>24


brokers, which extend margin credit as and when required to open or carry
positions in such margin accounts subject to applicable federal margin
regulations, stock exchange rules and such firms' credit policies. The
positions that may be held in the margin accounts, including the Common Stock,
are pledged as collateral security for the repayment of debit balances in the
respective accounts.

                  Pursuant to the Investment Agreement, the Issuer also issued
to each of the Investors, in proportion to the Participation Schedule, Class A
Warrants to purchase an aggregate of 300,000 Shares and Class B Warrants to
purchase an aggregate of 300,000 Shares (the "Class A Warrants" and "Class B
Warrants", respectively, and collectively, the "Warrants"). The forms of the
Class A Warrants and the Class B Warrants are attached as Exhibits D and E,
respectively, to the Investment Agreement.

                  The Class A Warrants are exercisable at any time after
December 17, 1996 and expire on December 17, 2001. Each Class A Warrant entitles
the holder thereof to purchase the number of Shares provided therein at a price
per share of $17.45, subject to customary anti-dilution adjustments and
adjustments based on the market prices of the Common Stock over the pricing
period referred to above applicable to the First Tranche. The Class A Warrants
will entitle Quantum Industrial, Phoenix Holdings, Winston L.P., Winston II LDC
and Winston II L.L.C. to purchase 150,000 Shares, 75,000 Shares, 24,990 Shares,
33,360 Shares and 16,650 Shares, respectively.

<PAGE>25


                  The Class B Warrants are exercisable at any time after
December 17, 1996 and expire on December 17, 2001. Each Class B Warrant
entitles the holder thereof to purchase the number of Shares provided therein
at a price per share of $25.00, subject to customary anti-dilution
adjustments. The Class B Warrants will entitle Quantum Industrial, Phoenix
Holdings, Winston L.P., Winston II LDC and Winston II L.L.C. to purchase
150,000 Shares, 75,000 Shares, 24,990 Shares, 33,360 Shares and 16,650 Shares,
respectively; provided, however that if the average of the per share daily low
trading price of the Common Stock over any 90-day period ending on the first
anniversary of the date of the first Put Notice delivered under the Investment
Agreement exceeds $50.00 per share, the aggregate number of Shares pursuant to
the Class B Warrants shall be reduced from 300,000 to 150,000 and the
respective number of Shares issuable to each of the Investors upon exercise of
the Class B Warrants shall be proportionally reduced.

Item 4. Purpose of Transaction

                  Each of the Investors entered into the Investment Agreement
with the Issues for investment purposes.

                  Pursuant to the Investment Agreement the Issuer agreed to
file a registration statement on Form S-3 covering the resale or other
disposition by the Investors of the Shares issuable under the Investment
Agreement and the Shares issuable upon exercise of the Warrants (the
"Registration Statement") and to keep the Registration Statement effective
pursuant to the provisions of Regulation 230.415 of the Securities Act of
1933,

<PAGE>26

as amended (the "1933 Act"), at all times for a period of approximately two
years commencing on the date of the first Put Notice delivered under the
Investment Agreement. In addition, the Issuer and the Investors entered into a
Registration Rights Agreement, dated as of October 3, 1996, pursuant to which
the Issuer also granted the Investors certain demand registration rights and
"piggyback" registration rights with respect to the Shares issued pursuant to
the Investment Agreement and the Shares issuable upon exercise of the
Warrants.  A copy of the Registration Rights Agreement is filed with this
Schedule 13D as Exhibit E.

                  The Registration Statement was declared effective on October
23, 1996 and the shares offered thereby may be delivered and/or sold in
transactions from time to time on the over-the-counter market, on the Nasdaq
National Market, in negotiated transactions, or a combination of methods of
sale, at market prices prevailing at the time, at prices related to such
prevailing prices or at negotiated prices. In addition, the Investors may make
short sales of the Shares and may use the shares issued under the Investment
Agreement or upon exercise of the Warrants to cover the resulting positions.

                  As discussed in Item 3, the Investors are, subject to certain
conditions set forth in the Investment Agreement, required to purchase Shares in
the Second Tranche under the Investment Agreement following delivery by the
Issuer of a Put Notice in respect of the Second Tranche. Such Put Notice may be
delivered at any time prior to October 3, 1998.

<PAGE>27

                  Each of the Investors and their affiliates intend to review
from time to time the Issuer's business affairs and financial position. Based
on such evaluation and review, as well as general economic and industry
conditions existing at the time, each of the Investors and their affiliates
may consider from time to time alternative courses of action. Such action may
include, subject to the receipt of all necessary regulatory approvals, the
acquisition of additional securities of the issuer through open market
purchases, privately negotiated transactions or otherwise. Alternatively, and
subject to the terms of the Investment Agreement, such actions may involve the
sale of all or a portion of the securities currently held for the account of
the Investors, or the Shares issuable upon conversion or exercise of such
securities, in the open market, in privately negotiated transactions, through
a public offering (including as contemplated by the Registration Statement as
discussed above) or otherwise.

                  Except as set forth above and as contemplated by the
agreements described herein, none of the Reporting Persons, or to the best of
the Reporting Persons' knowledge, any other person identified in response to
Item 2, has any plans or proposals which relate to or would result in any of the
transactions described in subparagraphs (a) through (j) of Item 4 of Schedule
13D under the Exchange Act.

Item 5.  Interest in Securities of the Issuer

                  (a)(i) The aggregate number of Shares of which each of Quantum
Industrial, QIHMI and QIH Management may be deemed a

<PAGE>28

beneficial owner is 639,855 (approximately 3.42% of the total number of Shares
which would be outstanding assuming the exercise or conversion of all
convertible securities held for the account of Quantum Industrial). This
number consists of (i) 339,855 Shares which Quantum Industrial is required to
purchase under the Put Notice in respect of the First Tranche, (ii) 150,000
Shares issuable upon exercise of the Class A Warrants held for the account of
Quantum Industrial and (iii) 150,000 Shares issuable upon exercise of the
Class B Warrants held for the account of Quantum Industrial.

                (ii) The aggregate number of shares of which Phoenix Holdings
may be deemed a beneficial owner is 319,927 (approximately 1.72% of the total
number of shares which would be outstanding assuming the exercise or conversion
of all convertible securities held for its account). This number consists of (i)
169,927 Shares which Phoenix Holdings is required to purchase under the Put
Notice in respect of the First Tranche, (ii) 75,000 Shares issuable upon
exercise of Class A Warrants held for its account and (iii) 75,000 Shares
issuable upon exercise of the Class B Warrants held for its account.

                 (iii) The aggregate number of Shares of which each of Winston
L.P. and CFM may be deemed a beneficial owner is 106,600 (approximately 0.58%
of the total number of Shares which would be outstanding assuming the exercise
or conversion of all convertible securities held for its account). This number
consists of (i) 56,620 Shares which Winston L.P. is required to purchase under
the Put Notice in respect of the First Tranche,

<PAGE>29


(ii) 24,990 Shares issuable upon exercise of the Class A Warrants held for the
account of Winston L.P. and (iii) 24,990 Shares issuable upon exercise of the
Class B Warrants held for the account of Winston L.P.

                  (iv) The aggregate number of Shares of which Winston II LDC
may be deemed a beneficial owner is 142,303 (approximately 0.77% of the total
number of Shares which would be outstanding assuming the exercise or conversion
of all convertible securities held for its account). This number consists of (i)
75,583 Shares which Winston II LDC is required to purchase under the Put Notice
in respect of the First Tranche, (ii) 33,360 Shares issuable upon exercise of
the Class A Warrants held for its account and (iii) 33,360 Shares issuable upon
exercise of the Class B Warrants held for its account.

                  (v) The aggregate number of Shares of which Winston II L.L.C.
may be deemed a beneficial owner is 71,024 (approximately 0.39% of the total
number of Shares which would be outstanding assuming the exercise or conversion
of all convertible securities held for its account). This number consists of (i)
37,724 Shares which Winston II L.L.C. is required to purchase under the Put
Notice in respect of the First Tranche, (ii) 16,650 Shares issuable upon
exercise of the Class A Warrants held for its account and (iii) 16,650 Shares
issuable upon exercise of the Class B Warrants held for its account.

                  (vi) The aggregate number of Shares of which each of CMC and
Chatterjee Advisors may be deemed a beneficial owner is 213,327 (approximately
1.15% of the total number of Shares which

<PAGE>30


would be outstanding assuming the exercise or conversion of all convertible
securities held for the accounts of Winston II LDC and Winston II L.L.C.).
This number consists of (i) 142,303 Shares which Winston II LDC may be deemed
to own beneficially and (ii) 71,024 Shares which Winston II L.L.C. may be
deemed to own beneficially.

                  (vii)  The aggregate number of Shares of which Dr. Chatterjee
may be deemed a beneficial owner is 959,782 (approximately 5.09% of the total
number of Shares which would be outstanding assuming the exercise or conversion
of all convertible securities of which Dr. Chatterjee may be deemed the
beneficial owner). This number consists of (i) 213,327 Shares which CMC and
Chatterjee Advisors may be deemed to own beneficially, (ii) 106,600 Shares
which CFM and Winston L.P. may be deemed to own beneficially and (iii) 639,855
Shares which Quantum Industrial may be deemed to own beneficially.

                  (viii) The aggregate number of Shares of which Mr. Soros may
be deemed a beneficial owner is 959,782 (approximately 5.09% of the total
number of Shares which would be outstanding assuming the exercise or
conversion of all convertible securities of which Mr. Soros may be deemed the
beneficial owner).  This number consists of (i) 639,855 Shares which Quantum
Industrial may be deemed to own beneficially and (ii) 319,927 Shares which
Phoenix Holdings may be deemed to own beneficially.

                  The percentages used herein are calculated based upon the
17,718,034 shares of Common Stock stated to be issued and outstanding at October
18, 1996, in Amendment No. 1 to the

<PAGE>31


Issuer's Registration Statement on Form S-3, filed on October 23, 1996, plus
(i) the 679,710 Shares to be issued pursuant to the Investment Agreement and
(ii) with respect to each Reporting Person, the number of Shares issuable upon
exercise of the Warrants which such Reporting Person may be deemed to own
beneficially.

               (b) (i) Quantum Industrial may be deemed to have shared power
to vote and dispose of the Shares and the Warrants held for its own account and
any Shares issuable upon exercise of the aforementioned Warrants.  Each of
QIHMI, QIH Management and Mr. Soros also may be deemed to have shared power to
vote and dispose of the Shares and the Warrants held for the account of
Quantum Industrial. In addition, Dr. Chatterjee by virtue of his position as a
sub advisor to Quantum Industrial may be deemed to have shared power to direct
the voting and disposition of the Shares and Warrants held for the account of
Quantum Industrial.

                  (ii) Phoenix Holdings may be deemed to have the sole power to
vote and dispose of the Shares and the Warrants held for its own account and any
Shares issuable upon exercise of the aforementioned Warrants. In addition, Mr.
Soros, in his capacity as a managing member of Phoenix Holdings with sole
voting and dispositive powers with respect to Shares and the Warrants of the
Issuer, may also be deemed to have the sole power to vote and dispose of the
Shares and the Warrants held for the account of Phoenix Holdings.

                 (iii) Winston L.P. has the sole power to vote and dispose of
the Shares and the Warrants held for its own account

<PAGE>32

and any Shares issuable upon exercise of the aforementioned Warrants. In
addition, Dr. Chatterjee, in his capacity as the person ultimately in control
of Winston L.P., may also be deemed to have the sole power to vote and dispose
of the Shares and the Warrants held for the account of Winston L.P.

                  (iv) Each of Winston II LDC and Winston II L.L.C. has sole
power to vote and dispose of the Shares and the Warrants held for its account
and any Shares issued upon exercise of any of the aforementioned Warrants. In
addition, Dr. Chatterjee, in his capacity as the person ultimately in control
of both Chatterjee Advisors and CMC, may also be deemed to have the sole power
to vote and dispose of the Shares and the Warrants held for the account of
Winston II LDC and Winston II L.L.C.

                  (c) Except for the transactions listed in Annex C hereto and
as described herein, there have been no transactions with respect to the Common
Stock by the Reporting Persons or, to the best of their knowledge, any other
person identified in response to Item 2 since August 25, 1996 (60 days prior to
the date hereof).

                  (d) (i) Other than the shareholders of Quantum Industrial, no
other individuals or entities have the right to participate in the receipt of
dividends from, or proceeds from the sale of, the securities described herein as
being held for the account of Quantum Industrial.

                  (ii) Other than Mr. Soros in his capacity as a managing
member of Phoenix Holdings, no other individuals or entities have the right to
participate in the receipt of dividends from, or

<PAGE>33

proceeds from the sale of, the securities described herein as being held for
the account of Phoenix Holdings.

                  (iii) Other than the partners of Winston L.P., no other
individuals or entities have the right to participate in the receipt of
dividends from, or proceeds from the sale of, the securities described herein
as being held for the account of Winston L.P.

                  (iv) Other than the shareholders of each of Winston II LDC and
Winston II L.L.C., no other individuals or entities have the right to
participate in the receipt of dividends from, or proceeds from the sale of, the
securities described herein as being held for the account of each of Winston II
LDC and Winston II L.L.C.

               (e)      Not applicable.

Item 6.  Contracts, Arrangements, Understandings, or Relationships with Respect
to Securities of the Issuer.

                  From time to time, the Reporting Persons may lend portfolio
securities to brokers, banks or other financial institutions. These loans
typically obligate the borrower to return the securities, or an equal amount of
securities of the same class, to the lender and typically provide that the
borrower is entitled to exercise voting rights and to retain dividends during
the term of the loan. From time to time, to the extent permitted by applicable
laws, the Reporting Persons or other clients of the Reporting Persons may borrow
the Common Stock, for the purpose of effecting, and may effect, short sale

<PAGE>34


transactions, and may purchase securities for the purpose of closing out short
positions in such securities.

                  Except as set forth above in this Item 6 and in Item 3, Item
4 and Item 5 hereto, neither the Reporting Persons nor, to the best of their
knowledge, any other person listed in Item 2 have any contracts, arrangements,
understandings or relationships with respect to the securities of the Issuer.

Item 7.  Material to be Filed as Exhibits

         A.        Investment Agreement, dated as of October 3, 1996, by and
among Amati Communications Corporation and Quantum Industrial Partners LDC,
S-C Phoenix Holdings, L.L.C., Winston Partners, L.P., Winston Partners II LDC
and Winston Partners II L.L.C., including the Exhibits and Schedules thereto.

         B.        $1,000,000 Secured Recourse Demand Promissory Note, dated
September 19, 1996, executed by Amati Communications Corporation in favor of
Chatterjee Management Company.

         C.        $2,000,000 Secured Recourse Demand Promissory Note, dated
October 8, 1996, executed by Amati Communications Corporation in favor of
Chatterjee Management Company.

         D.        Collateral Assignment and Security Agreement, dated as of
September 19, 1996, by Amati Communications Corporation in favor of Chatterjee
Management Company.

         E.        Registration Rights Agreement, dated as of October 3, 1996,
by and among Amati Communications Corporation and Quantum Industrial Partners
LDC, S-C Phoenix Holdings, L.L.C., Winston Partners, L.P., Winston Partners II
LDC and Winston Partners II L.L.C.

         F.        Power of Attorney, dated May 23, 1996 granted by Quantum
Industrial Partners LDC in favor of Mr. Sean C. Warren.

         G.        Power of Attorney, dated October 25, 1996 granted by Winston
Partners, L.P. in favor of Mr.  Peter A. Hurwitz.

         H.        Power of Attorney, dated October 25, 1996 granted by Winston
Partners II LDC in favor of Mr.  Peter A. Hurwitz.

<PAGE>35


         I.        Power of Attorney, dated October 25, 1996 granted by
Chatterjee Fund Management, L.P. in favor of Mr. Peter A. Hurwitz.

         J.        Power of Attorney, dated May 31, 1995 granted by Purnendu
Chatterjee in favor of Mr. Peter A.  Hurwitz.

         K.        Power of Attorney, dated April 16, 1996 granted by Mr.
George Soros in favor of Mr. Sean C.  Warren.

         L.        Joint Filing Agreement, dated as of October 25, 1996, by
and among Quantum Industrial Partners LDC, S-C Phoenix Holdings, L.L.C., QIH
Management Investor, L.P., QIH Management, Inc., Winston Partners, L.P.,
Winston Partners II LDC, Winston Partners II L.L.C., Chatterjee Management
Company, Chatterjee Advisors L.L.C., Chatterjee Fund Management, L.P.,
Purnendu Chatterjee and George Soros.

<PAGE>36


Signature

                  After reasonable inquiry and to the best of my knowledge and
belief, the undersigned certifies that the information set forth in this
statement is true, complete and correct.


October 25, 1996                      QUANTUM INDUSTRIAL PARTNERS LDC

                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Attorney-in-Fact



October 25, 1996                      S-C PHOENIX HOLDINGS, L.L.C.

                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Manager



October 25, 1996                      QIH MANAGEMENT INVESTOR, L.P.


                                      By:  QIH Management, Inc.


                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Vice President



October 25, 1996                      QIH MANAGEMENT, INC.

                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Vice President




<PAGE>37




October 25, 1996                      WINSTON PARTNERS, L.P.

                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Attorney-in-Fact


October 25, 1996                      WINSTON PARTNERS II LDC


                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Attorney-in-Fact



October 25, 1996                      WINSTON PARTNERS II L.L.C.


                                      By:  Chatterjee Advisors L.L.C.,
                                           its manager


                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Manager



October 25, 1996                      CHATTERJEE MANAGEMENT COMPANY

                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Vice President



October 25, 1996                      CHATTERJEE ADVISORS L.L.C.

                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Manager




<PAGE>38




October 25, 1996                      CHATTERJEE FUND MANAGEMENT, L.P.

                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Attorney-in-Fact



October 25, 1996                      DR. PURNENDU CHATTERJEE


                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Attorney-in-Fact



October 25, 1996                      MR. GEORGE SOROS


                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Attorney-in-Fact




<PAGE>39


                                  EXHIBIT INDEX

     A.  Investment  Agreement,  dated as of October 3, 1996, by and among
         Amati Communications  Corporation  and Quantum  Industrial  Partners
         LDC, S-C Phoenix Holdings,  L.L.C.,  Winston Partners,  L.P., Winston
         Partners II LDC and Winston Partners II L.L.C., including the
         Exhibits and Schedules thereto.

     B.  $1,000,000  Secured Recourse Demand Promissory Note, dated September
         19, 1996,  executed  by Amati  Communications  Corporation  in  favor
         of Chatterjee Management Company.

     C.  $2,000,000  Secured  Recourse Demand  Promissory  Note, dated October
         8, 1996,  executed  by Amati  Communications  Corporation  in  favor
         of Chatterjee Management Company.

     D.  Collateral Assignment and Security Agreement,  dated as of September
         19, 1996, by Amati  Communications  Corporation  in favor of
         Chatterjee Management Company.

     E.  Registration Rights Agreement, dated as of October 3, 1996, by and
         among Amati Communications Corporation and Quantum Industrial
         Partners LDC, S-C Phoenix Holdings, L.L.C., Winston Partners, L.P.,
         Winston Partners II LDC and Winston Partners II L.L.C.

     F.  Power of Attorney, dated May 23, 1996 granted by Quantum Industrial
         Partners LDC in favor of Mr. Sean C.  Warren.

     G.  Power of Attorney, dated October 25, 1996 granted by Winston
         Partners, L.P. in favor of Mr. Peter A.  Hurwitz.

     H.  Power of Attorney, dated October 25, 1996 granted by Winston Partners
         II LDC in favor of Mr. Peter A. Hurwitz.

     I.  Power of Attorney, dated October 25, 1996 granted by Chatterjee Fund
         Management, L.P. in favor of Mr.  Peter A.  Hurwitz.

     J.  Power of Attorney, dated May 31, 1995 granted by Purnendu Chatterjee
         in favor of Mr. Peter A. Hurwitz.

     K.  Power of Attorney, dated April 16, 1996 granted by Mr. George Soros
         in favor of Mr. Sean C. Warren.

     L.  Joint Filing Agreement, dated as of October 25, 1996, by and among
         Quantum Industrial Partners LDC, S-C Phoenix Holdings, L.L.C., QIH
         Management Investor, L.P., QIH Management, Inc., Winston Partners,
         L.P., Winston Partners II LDC, Winston Partners II L.L.C., Chatterjee
         Management Company, Chatterjee Advisors L.L.C., Chatterjee Fund
         Management, L.P., Purnendu Chatterjee and George Soros.


<PAGE>40




                                     ANNEX A

            DIRECTORS AND OFFICERS OF QUANTUM INDUSTRIAL PARTNERS LDC


<TABLE>
<CAPTION>


Name/Title/Citizenship                         Principal Occupation                    Business Address
- ----------------------                         --------------------                    ----------------
<S>                                    <C>                                         <C>

Curacao Corporation Company N.V.               Managing Director of Netherlands        Kaya Flamboyan 9 Curacao,
Managing Director                              Antilles corporations                   Willemstad Netherlands Antilles
(Netherlands Antilles)

Inter Caribbean Services Limited               Administrative Services                 Citco Building
Secretary                                                                              Wickhams Cay
(British Virgin Islands)                                                               Road Town

</TABLE>







<PAGE>41



                                     ANNEX B

                  The following is a list of all of the persons who serve as
Managing Directors of Soros Fund Management ("SFM"):

                            Scott K.H. Bessent
                            Walter Burlock
                            Stanley F. Druckenmiller
                            Jeffrey L. Feinberg
                            Arminio Fraga
                            Gary Gladstein
                            Robert K. Jermain
                            David N. Kowitz
                            Elizabeth Larson
                            Alexander C. McAree
                            Paul McNulty
                            Gabriel S. Nechamkin
                            Steven Okin
                            Dale Precoda
                            Lief D. Rosenblatt
                            Mark D. Sonnino
                            Filiberto H. Verticelli
                            Sean C. Warren

Each of the above-listed persons is a United States citizen whose principal
occupation is serving as Managing Director of SFM, and each has a business
address c/o Soros Fund Management, 888 Seventh Avenue, 33rd Floor, New York,
New York 10106.  During the past five years, none of the above-listed persons
has been (i) convicted in a criminal proceeding, or (ii) a party to any civil
proceeding as a result of which any such persons has been subject to a
judgment, decree or final order enjoining future violations of, or prohibiting
or mandating activities subject to, federal or state securities laws, or
finding any violations with respect to such laws.



<PAGE>42


                                     ANNEX C


                     RECENT TRANSACTIONS IN THE COMMON STOCK
                       OF AMATI COMMUNICATIONS CORPORATION

<TABLE>
<CAPTION>

                                            Date of              Nature of                Number of       Price Per
For the Account of:                         Transaction          Transaction               Shares            Share
- ------------------                          -----------          -----------              ---------        ------
<S>                                      <C>                    <C>                       <C>              <C>
White Rock Capital, L.P.(1)                  9/10/96              SHT Sale Cover            5,000            $20.750
White Rock Capital, L.P.                     9/13/96              SHT Sale Cover            2,000            20.375
White Rock Capital, L.P.                     9/13/96              SHT Sale Cover            2,000            20.375
White Rock Capital, L.P.                     9/16/96              SHT Sale Cover            6,000            23.333
White Rock Capital, L.P.                     9/16/96              SHT Sale Cover            8,000            23.333
White Rock Capital, L.P.                     10/01/96             SHT Sale                  5,000            21.781
White Rock Capital, L.P.                     10/03/96             SHT Sale Cover           12,000            21.874
White Rock Capital, L.P.                     10/03/96             SHT Sale Cover           10,000            21.874
White Rock Capital, L.P.                     10/03/96             SHT Sale Cover            5,000            21.875

<FN>
- ----------------------------
             (1)  White Rock Capital, L.P., a Texas limited partnership (White
Rock"), is an investment adviser whose business address is 3131 Turtle Creek
Blvd., Suite 800, Dallas, Texas 75219. White Rock effected the transactions
described above in its capacity as investment advisor to, and for the account
of, Quasar International Partners C.V., a Netherlands Antilles limited
partnership ("Quasar"). Quasar has granted investment discretion to SFM
pursuant to an investment advisory contract, certain authority of which has
been delegated by SFM with respect to a portion of Quasar's portfolio to a
portfolio manager pursuant to an investment advisory contract between Quasar
and White Rock.

                  SFM's contracts with its clients generally provide that SFM is
responsible for designing and implementing the client's overall investment
strategy; for conducting direct portfolio management strategies to the extent
that SFM determines that it is appropriate to utilize its own portfolio
management capabilities; for selecting, evaluating and monitoring other
investment advisors who manage separate portfolios on behalf of the client; and
for allocating and reallocating the client's assets among them and itself.

                  Pursuant to regulations promulgated under Section 13(d) of the
1934 Act, Mr. Soros (as the sole proprietor and the person ultimately in control
of SFM) may be deemed a beneficial owner of securities held for the account of
Quasar as a result of the contractual authority of SFM to exercise investment
discretion with respect to such securities. Although SFM has delegated to White
Rock investment discretion with respect to a portion of Quasar's portfolio, the
Mr. Soros may be deemed a beneficial owner of securities held in such portfolio
as a result of SFM's ability to terminate its contractual relationship with
White Rock within 60 days.

</TABLE>



<PAGE>



                              INVESTMENT AGREEMENT

                                     Between

                        AMATI COMMUNICATIONS CORPORATION,

                        QUANTUM INDUSTRIAL PARTNERS LDC,

                          S-C PHOENIX HOLDINGS, L.L.C.,

                             WINSTON PARTNERS, L.P.,

                             WINSTON PARTNERS II LDC

                                       AND

                           WINSTON PARTNERS II L.L.C.

                           Dated as of October 3, 1996




<PAGE> 1


     INVESTMENT AGREEMENT dated as of October 3, 1996 between Quantum
Industrial Partners LDC, S-C Phoenix Holdings, L.L.C., Winston Partners, L.P.,
Winston Partners II LDC and Winston Partners II L.L.C. (collectively, the
"Investors") and Amati Communications Corporation, a corporation organized and
existing under the laws of the State of Delaware (the "Company").

     WHEREAS, the parties desire that, upon the terms and subject to the
conditions contained herein, the Investors shall invest up to $15,000,000 in the
Company's Common Stock, par value $.20 per share (the "Common Stock").

     NOW, THEREFORE, the parties hereto agree as follows:


                                   Article I.
                                   ----------

                       Purchase and Sale of Common Stock
                       ---------------------------------

      Section 1.1. Purchase and Sale of Common Stock. Upon the terms and
conditions set forth herein, the Company shall issue and sell to the Investors,
and the Investors shall purchase from the Company, in proportion to the
percentages set forth opposite the name of each Investor on Schedule I hereto
(the "Participation Schedule"), up to an amount of Common Stock valued in
accordance with the terms of this Agreement at $15,000,000.

      Section 1.2. Delivery of Put Notices.

           (a)  At any time prior to the earlier of (i) the date which is two
years from the date hereof (the "Notice Termination Date") or (ii) termination
of this Agreement in accordance with Article V herein, the Company may deliver
written notices to the Investors (each such notice hereinafter referred to as a
"Put Notice") stating a dollar amount (the "Dollar Amount") of Common Stock
which the Company intends to sell to the Investors five business days following
the date (the "Put Notice Date") on which the Put Notice is given to the
Investors by the Company in accordance with Section 6.4 herein. "Business day"
shall mean any day on which the Nasdaq Stock Market's National Market is open
for trading. The Dollar Amount designated by the Company in the first Put Notice
given hereunder shall be an amount equal to $10,000,000 and the amount
designated by the Company in the second Put Notice given hereunder shall equal
$5,000,000 (the "Second Tranche"), in each case unless otherwise agreed in
writing by the Investors or limited by operation of the proviso contained in
this sentence, and, if so limited, shall be in increments of $500,000; provided
that if the Dollar Amount designated by the Company in a Put Notice would cause
the Valuation Period (as defined below) with respect to such Put Notice to
exceed 90 days (a "Valuation Period Default"), the Dollar Amount designated by
the Company and required to be purchased by the Investors shall be reduced by
that amount that would cause a Valuation Period Default. The Put Notice shall

<PAGE>2

include a representation of the Company as to the Common Stock outstanding on
the Put Notice Date as determined in accordance with Section 13(d) of the
Securities Exchange Act of 1934 (the "Exchange Act") and the regulations
promulgated thereunder.

          (b)  Notwithstanding any of the foregoing, the Company may not deliver
a Put Notice if: (i) the reported last trading price of the Common Stock on the
Nasdaq Stock Market's National Market, American Stock Exchange or New York Stock
Exchange (whichever is the principal trading exchange for the Common Stock, the
"Principal Market"), as reported by the Principal Market, on the day of such Put
Notice was less than $10.00; (ii) if trading of the Common Stock on the
Principal Market is suspended or limited or the Common Stock is delisted from
the Principal Market, or trading in securities generally as reported by the
Principal Market, shall have been suspended or limited or minimum prices shall
have been established on securities whose trades are reported by the Principal
Market; (iii) if the Common Stock is not registered under the Exchange Act or if
the Registration Statement is no longer effective or is subject to a stop order
or is otherwise suspended; or (iv) if a Valuation Period is in progress. If any
of the events described in clauses (i) to (iii) above occurs after a Put Notice
is delivered but prior to the Closing associated with such Put Notice, such Put
Notice shall be null, void and of no force and effect and a new Put Notice shall
be required following the termination of any such events.

      Section 1.3. Determination of Share Number; Valuation Period.

           (a) The initial aggregate number of shares (an "Initial Share
Number") that the Company shall be obligated to issue and sell and the Investors
shall be obligated to purchase (in accordance with the Participation Schedule)
in connection with a Put Notice shall be equal to the number obtained by (i)
dividing (x) the Dollar Amount designated in such Put Notice by (y) 85% of the
closing price of the Common Stock on the Principal Market on the Put Notice
Date, as reported by the Principal Market (such closing trading price hereby
defined as the "Initial Share Price") and (ii) rounding to the nearest whole
number of shares.

           (b) Subject to the extensions set forth in Section 1.3(c) below, the
"Valuation Period" in connection with each purchase of Common Stock shall
commence on the Trading Day immediately following the Put Notice Date with
respect to such purchase and shall end on that Trading Day during which the
aggregate number of shares of Common Stock traded on the Principal Market
(determined by reference to the sum of the actual daily trading volume of the
Common Stock, as reported in the Wall Street Journal for the applicable Trading
Days) subsequent to the Put Notice Date applicable to such purchase is at least
equal to twenty (20) times the applicable Initial

<PAGE> 3

Share Number; provided, however, that for purposes of determining whether a
Valuation Period Default has occurred, the "Valuation Period" shall be deemed to
equal that number of days determined by dividing (i) twenty (20) times the
applicable Initial Share Number by (ii) the Average Daily Trading Volume during
the thirty (30) Trading Days immediately preceding the Put Notice Date, rounded
to the nearest whole number of Trading Days. For purposes of this Agreement
"Average Daily Trading Volume" shall mean, with respect to any measuring period,
the average of the daily trading volumes, as published in the Wall Street
Journal, of the Common Stock on the Principal Market during such measuring
period. For purposes of this section "Trading Days" shall mean days on which the
Common Stock was traded on the Principal Market.

           (c) (i)  If the Average Daily Trading Volume during any Valuation
Period is less than the Average Daily Trading Volume during the thirty (30)
Trading Days immediately preceding the applicable Put Notice Date, the Investors
shall have an option with respect to each Put Notice, exercisable in their sole
discretion, to extend such Valuation Period to that number of days which would
have comprised the Valuation Period had the Valuation Period been calculated
using a factor of thirty (30) times the applicable Initial Share Number rather
than the factor of twenty (20) set forth in Section 1.3(b) above. Such election
shall be made by notifying the Company in writing, no later than three business
days following the last day of the Valuation Period of their election to so
extend such Valuation Period.

                (ii) For each Trading Day during any Valuation Period (prior to
any extension pursuant to Section 1.3(c)(i) above) that the low trading price
per share of the Common Stock on the Principal Market, as reported by the
Principal Market, is less than 75% of the Initial Share Price (a "Price
Deficiency"), the Investors shall have the option, exercisable in their sole
discretion, to extend such Valuation Period by one day. Such election shall be
made by notifying the Company in writing, no later than three business days
following the Trading Day on which the Price Deficiency exists.

           (d)  Notwithstanding Section 1.3(a) above, and except as hereinafter
provided, if the Average Share Price (as defined below) during any Valuation
Period is less than the Initial Share Price of the Common Stock purchased in
connection with such Valuation Period, then the Company shall deliver to the
Investors at the applicable Final Closing (as defined below), at no additional
cost to the Investors, and in addition to the Initial Share Number associated
with such Valuation Period, the number of shares of Common Stock ("Additional
Shares") that is obtained by subtracting (x) such Initial Share Number from (y)
the quotient obtained by dividing the Dollar Amount by 85% of the Average Share
Price (rounded to the nearest whole number); provided that if such issuance of
Additional Shares would result in (i) the Investors being the beneficial owner
of 10% or more of the

<PAGE> 4

outstanding shares of Common Stock after taking into account all Warrant Shares
(as defined below) and all other shares of Common Stock beneficially owned or
deemed beneficially owned by the Investors (the "10% Limit") or (ii) the Company
issuing more than twice the Initial Share Number (the "Issuance Maximum"), then
in lieu of issuing such portion of Additional Shares as would cause the
Investors to meet or exceed the 10% Limit or the Issuance Maximum, the Company
shall pay at the applicable Final Closing and in accordance with the provisions
of Section 1.5(b) hereof in cash to the Investors an amount (the "Dollar Amount
Rebate") equal to the product of (A) the Average Share Price and (B) the Excess
Additional Shares. For purposes of this Section 1.3(d), "Excess Additional
Shares" shall mean, at the time of calculation, the difference between the
amount of Additional Shares to which the investor would otherwise be entitled
pursuant to this subsection 1.3(d) at such time and the greater of (x) the
number of Additional Shares, if any, which, when added to all other shares of
Common Stock beneficially owned by the Investors at such time, taking into
account the Warrant Shares, would equal 10% or more of the outstanding shares of
Common Stock at the time of calculation or (y) the number of Additional Shares,
if any, which exceed the Issuance Maximum.

           (e)  For purposes hereof, "Average Share Price" shall mean the lower
of (i) the average during the applicable Valuation Period of the average of the
high and low per share trading prices of the Company's Common Stock for each day
during the applicable Valuation Period, as reported by the Principal Market and
(ii) (x) in the case of the purchase and sale pursuant to the first Put Notice,
the per share daily low trading price of the Company's Common Stock on the date
hereof or (y) in the case of the purchase and sale pursuant to the second Put
Notice, the per share low trading price of the Company's Common Stock on the
applicable Put Notice Date; provided, however, that the Average Share Price in
respect of the first $5,000,000 of the $10,000,000 in Dollar Amount to be
purchased and sold pursuant to the first Put Notice (such $5,000,000 in Dollar
Amount being referred to herein as the "First Tranche") shall not exceed the
average of the per share closing prices of the Company's Common Stock for the
twenty (20) Trading Days ending August 15, 1996.

           (f)  In the event that during a Valuation Period there is any stock
split, reverse split or combination, stock dividend or similar such event with
respect to the Common Stock, there shall be effected an appropriate adjustment
to the Initial Share Number, Initial Share Price, Average Share Price and
Additional Shares to place the Investors in the same position as they would have
been had such event not occurred, and in the event of any dispute in connection
with this paragraph, the adjustment shall be determined by arbitration before a
single arbitrator in New York, New York, in accordance with the prevailing rules
of the American Arbitration Association.

      Section 1.4.  Initial Closings.


<PAGE> 5

           (a)  Each initial closing of the purchase and sale of Common Stock
(an "Initial Closing") shall take place at the offices of the Investors, at
10:00 a.m., New York time, on the fifth business day following the Put Notice
Date to which such Initial Closing relates, or the earliest date thereafter on
which all conditions to Closing have been satisfied or waived in accordance
with the terms of this Agreement. Each date on which an Initial Closing occurs
is referred to herein as an "Initial Closing Date." Initial Closings and Final
Closings are sometimes referred to herein as a "Closing".

           (b) (i)  On each Initial Closing Date, the Company shall deliver to
the Investors in accordance with the Participation Schedule certificates
representing the Initial Share Number to be issued and sold to the Investors on
such date and registered in the name of the Investors or deposit such Initial
Share Number into the accounts designated by the Investors and (ii) on each
Initial Closing Date, the Investors shall in accordance with the Participation
Schedule deliver to the Company 50% of the Dollar Amount (the remaining 50% of
the Dollar Amount being referred to herein as the "Dollar Amount Balance") with
respect to such closing by cashier's check or wire transfer in immediately
available funds to such account as shall be designated in writing by the Company
no later than two business days prior to such Initial Closing Date. In addition,
each of the Company and the Investors shall deliver all documents, instruments
and writings required to be delivered by any of them pursuant to this Agreement
at or prior to each Closing.

      Section 1.5. Final Closings; Adjustments.

           (a)  Each final closing of the purchase and sale of Common Stock (a
"Final Closing") shall take place at the offices of the Investors, at 10:00
a.m., New York time, on the fifth business day following the end of the
Valuation Period to which such Final Closing relates, or the earliest date
thereafter on which all conditions to Closing have been satisfied or waived in
accordance with the terms of this Agreement. Each date on which a Final Closing
occurs is referred to herein as a "Final Closing Date".

           (b)  On each Final Closing Date, (i) to the extent the Investors are
entitled to the issuance of Additional Shares as provided in Section 1.3(d), the
Company shall deliver to the Investors one or more certificates representing the
Additional Shares so to be delivered in accordance with this Agreement,
registered in the name of the Investors, or deposit such Additional Shares into
accounts designated by the Investors and (ii) the Investors shall deliver to the
Company the excess, if any, of (x) the Dollar Amount Balance with respect to
such Final Closing over (y) the amount, if any, of the Dollar Amount Rebate with
respect to such Final Closing to which the Investors are entitled pursuant to
Section 1.3(d), by cashier's check or wire

<PAGE> 6

transfer in immediately available funds to such account as shall be designated
in writing by the Company no later than two business days prior to such Final
Closing Date; provided, however, that to the extent that the Dollar Amount
Rebate with respect to such Final Closing exceeds the Dollar Amount Balance with
respect to such Final Closing, the Company shall refund and deliver to the
Investors, or accounts designated by the Investors, such excess by cashier's
check or wire transfer in immediately available funds to such account as shall
be designated in writing by the Investors no later than two business days prior
to such Final Closing Date.

      Section 1.6. Registration.

           (a)  All shares (including Additional Shares) of Common Stock issued
to the Investors pursuant to this Agreement shall, at the time of such issuance
and for so long thereafter as is required by this Agreement, be subject to an
effective registration statement on Form S-3 or an equivalent thereof, covering
the resale or other disposition by the Investors of the Shares and Additional
Shares to be issued by the Company to the Investors hereunder at any time and
from time to time after each such issuance. In addition, all shares of Common
Stock issuable upon exercise of the Warrants ("Warrant Shares") shall, on the
earlier to occur of (i) 90 days following the date of this Agreement and (ii)
delivery to the Investors of the first Put Notice hereunder, be subject to an
effective registration statement on Form S-3 or an equivalent thereof covering
(x) the issuance of the Warrant Shares by the Company to any holder of a Warrant
(each a "Warrant Holder" and collectively, the "Warrant Holders") and (y) the
resale or other disposition thereof by any Warrant Holder at any time and from
time to time after each such issuance. The Initial Share Number, Additional
Shares and Warrant Shares shall be referred to collectively herein as the
"Shares". The registration statements described in this Section 1.6(a) (together
with all amendments and supplements thereto, a "Registration Statement") shall,
in accordance with Section 1.6(b) below, remain effective pursuant to the
provisions of Regulation 230.415 of the Securities Act of 1933, as amended (the
"1933 Act"), or successor provision, at all times during the period commencing
on the date of the first Put Notice and ending on the later to occur of (1) the
second anniversary of such date or (2) the 180th day following the delivery by
the Company to the Investors of (A) a notice indicating that the Company will
not deliver a Put Notice in respect of the Second Tranche or (B) a Put Notice in
respect of the Second Tranche (the "Registration Period"). Any notice delivered
by the Company pursuant to clause (A) above shall be irrevocable and shall
relieve the Investors from any obligation to purchase Additional Shares under
this Agreement.

           (b)  The Company shall, as expeditiously as reasonably possible and
in accordance with Section 1.6(a) herein:


<PAGE> 7

                (i) Prepare and file with the Securities and Exchange Commission
("SEC") such amendments and supplements to such Registration Statement and the
prospectus used in connection therewith as may be necessary to comply with the
provisions of the 1933 Act with respect to the disposition of all securities
covered by such Registration Statement.

                (ii) Furnish to the Investors or any Warrant Holder, as the case
may be, such numbers of copies of a prospectus, in conformity with the
requirements of the 1933 Act, and such other documents as the Investors or
Warrant Holder, as the case may be, may reasonably require in order to
facilitate the disposition of shares sold pursuant to this Agreement or issued
pursuant to the Warrants and owned by such Investors or Warrant Holder.

                (iii)  Insure that all Shares subject to the Registration
Statement shall at all times during the applicable Registration Period be
registered and qualified under such other securities or "Blue Sky" laws of such
jurisdictions as shall be reasonably requested by the Investors or the Warrant
Holders, as the case may be, provided that the Company shall not be required in
connection herewith or as a condition hereto to qualify to do business or to
file a general consent to service of process in any such states or jurisdictions
where the Company is not otherwise required to be so qualified.

                (iv)  Notify the Investors and/or any Warrant Holder of the
happening of any event or the existence of any circumstance (without any
obligation to disclose the specific actual event or circumstance) as a result of
which the prospectus included in the Registration Statement, as then in effect,
includes an untrue statement of material fact or omits to state a material fact
required to be stated therein or necessary to make the statements therein not
misleading in light of the circumstances then existing and either (A) as soon as
may be practicable, prepare and file with the SEC such amendments and
supplements to such Registration Statement and prospectus used in connection
therewith as may be necessary to eliminate or correct such untrue statement or
omission and otherwise to cause such registration statement and prospectus to
remain current and useable for the purposes intended hereunder, or (B) further
notify the Investors and/or the Warrant Holders, as the case may be, at the time
of any notification to Investors and/or the Warrant Holders, as the case may be,
pursuant to the foregoing provisions of this Section 1.6(b)(iv) of the Company's
election to suspend and extend for a period of up to thirty (30) calendar days
(a "Suspension Period") the Company's obligations pursuant to the pr4ceding
clause (A) of this Section 1.6(b)(iv) or the Company's obligation to file or
maintain the effectiveness of a Registration Statement under the Registration
Rights Agreement; provided that the Company will, at or before the expiration of
any such Suspension Period, fully satisfy and discharge its obligations pursuant
to such preceding clause (A); and provided

<PAGE> 8

further that no Suspension Period may commence less than ninety (90) days after
the expiration of the then most recent Suspension Period, and the Company may
establish no more than two (2) Suspension Periods in any twelve (12) consecutive
months during which the Registration Statement is to remain effective pursuant
to Section 1.6(a). The Company, the Investors and the Warrant Holders understand
and acknowledge that, during any Suspension Period, the Company will be unable
to sell Common Stock to the Investors in accordance with or under the
Registration Statement and that Investors and/or the Warrant Holders may be
unable to sell or otherwise dispose of Shares of Common Stock theretofore
acquired by the Investors and/or the Warrant Holders hereunder or pursuant to
the Warrants in accordance with the Registration Statement or otherwise. The
foregoing shall not, however, limit or interfere in any way with the acquisition
or disposition by the Investors and/or the Warrant Holders of the Shares, or any
other shares or securities of the Company by other lawful means. Any Valuation
Period falling within any Suspension Period, in whole or in part, shall be
suspended during such Suspension Period and shall be extended by the entire
length of that portion of the applicable Suspension Period which occurred during
the original applicable Valuation Period.

                (v) Make available for inspection by the Investors' designated
representatives, upon request from time to time, all SEC Documents (as defined
below), require the Company's officers and the Company's employees to supply all
information requested by the Investors or their designated representatives in
connection with the Registration Statement, require the Company's officers and
the Company's employees to meet with representatives of the Investors'
designated representatives, during normal business hours and on such basis as
the Investors' designated representatives may reasonably request, invite the
Investors' designated representatives to attend any and all meetings organized
by the Company for purposes of disseminating information about the Company to
securities analysts generally and make available to the Investors' designated
representatives, contemporaneously with the provision of such information, any
and all information about the Company provided by the Company to securities
analysts. In addition, the Company will permit Investors' designated
representatives access to the Company's premises and, personnel, consultants,
agents, attorneys, accountants, customers, suppliers, bankers, and others who
have significant relationships or agreements with the Company and the Company's
assets, books and records and the Company will provide Investors' designated
representatives with information (financial and otherwise) concerning the
Company to enable Investors' designated representatives to conduct ongoing due
diligence review of the Company. The Company will disseminate to the Investors'
designated representatives all press releases and public information
disseminated by the Company at the same time it disseminates such releases and
information to others. Notwithstanding anything herein to the contrary, and in
any event prior to any Closing, the Company will notify the Investors'

<PAGE> 9

designated representatives of any event or the existence of any circumstance
(without any obligation to disclose the specific event or circumstance)
constituting non-public information (whether or not requested of the Company
specifically or generally during the course of due diligence by the Investors'
designated representatives) which, if not disclosed in the prospectus included
in the Registration Statement required to be effective at the time of each
Closing would cause such prospectus to include a material misstatement or to
omit a material fact required to be stated therein in order to make the
statements therein, in light of the circumstances in which they were made, not
misleading.

               (vi) Except as required, in the opinion of the Company's counsel,
by law or consented to in advance by Investors (which consent shall not be
unreasonably withheld) refrain from using the name of Investors in the
Registration Statement or other regulatory filings (including SEC Documents).

           (c)  The Company, the Investors and certain other parties shall have
the rights to indemnification and contribution set forth in the Registration
Rights Agreement (as defined below).

           (d)  All fees, costs and expenses of and incidental to the
Registration Statement shall be borne by the Company. The fees, costs and
expenses of registration to be borne by the Company as provided in this
subsection (e) shall include, without limitation, all registration, filing and
NASD fees, printing expenses, fees and disbursements of counsel and accountants
for the Company, fees and expenses of one counsel for the Investors and Warrant
Holders and all legal fees and disbursements and other expenses of complying
with state securities or Blue Sky laws of any jurisdiction or jurisdictions in
which securities to be offered are to be registered and qualified.

      Section 1.7. Rescheduling.  If after the date of any Put Notice and
prior to the expiration of the Valuation Period relating to such Put Notice (a)
the Company shall distribute to its shareholders any property or assets outside
the ordinary course of business (including without limitation spin-offs and the
like) or (b) any person shall (x) publicly announce a tender offer or exchange
offer for the Company's Common Stock, or (y) publicly announce plans for a
merger, consolidation or potential change in control of the Company, the
Investors may in their sole discretion elect by written notice to the Company to
shorten the Valuation Period relating to such Put Notice so as to end on a date
which is either before or after the consummation of the record date for the
consummation of any such transaction, which election must be made prior to
consummation of any such transaction. For purposes of the foregoing, it is
understood and agreed that the Investors may, but shall not be required to,
reduce or entirely eliminate a Valuation Period pursuant to this Section 1.7.


<PAGE> 10

      Section 1.8. Delisting/Deregistration. If, during any Valuation Period or
within twenty (20) days after the end of such Valuation Period, (i) the Common
Stock is delisted from the Principal Market or (ii) the Common Stock is not
registered under the Exchange Act, Investors shall have the right, at their
option in their sole discretion, which right shall be exercised within twenty
(20) days of such delisting or deregistration, to sell to the Company, and the
Company agrees to buy, promptly upon the exercise of such right by Investors,
all or any part of the Initial Share Number and Additional Shares issued to and
then held by the Investors in connection with the most recent Put Notice at a
price equal to the Initial Share Price (if prior to the end of the Valuation
Period) and at a price equal to the Average Share Price (if subsequent to the
Valuation Period) for each such Share and Additional Share.

      Section 1.9. Suspension. In addition to, and not in any way in limitation
of the provisions contained in Section 1.6(b)(iv), if (i) during any Valuation
Period or within twenty (20) days after the end of such Valuation Period trading
of the Common Stock on the Principal Market is suspended or (ii) any
registration statement with respect to the Shares or Additional Shares
(including the Registration Statement) is no longer effective or subject to a
stop order or otherwise suspended by the Company or as a result of action or
inaction by the Company, then (A) the Valuation Period shall be suspended as
described in Section 1.6(b)(iv), (B) with respect to Shares then held by the
Investors (exclusive of the Warrant Shares) the following figures shall be
substituted for the 85% figure contained in Section 1.3(a)(y) above and (C) the
Company shall deliver to the Investors within two (2) business days of Investors
providing documentation of Shares (other than Warrant Shares) then held by
Investors, an amount in cash equal to the difference between that portion of the
total amount previously paid (or, in the case of a suspension following an
Initial Closing but prior to the applicable Final Closing, to be paid) by the
Investors to the Company for Shares (other than any Warrant Shares) issued to
and then held by the Investors and the total amount which the Investors should
have paid to the Company for such Shares, based on the figures listed below,
after giving effect to all prior payments made by the Company to the Investors
pursuant to this Section 1.9.

     TIME PERIOD FROM SUSPENSION DATE                          PERCENT
     --------------------------------                       -------------

     31-60 days after date of suspension                         83%
     61-90 days after date of suspension                         81%
     91-120 days after date of suspension                        79%



<PAGE> 11

     In addition to the foregoing, in the event of any suspension for more than
120 days, on the 120th day of such suspension the Company shall deliver to the
Investors, pursuant to Section 1.3(d), such number of Additional Shares as is
equal to the number of Additional Shares to which the Investors would be
entitled pursuant to Section 1.3(d) based on (a) the Average Share Price of the
Common Stock for the originally scheduled Valuation Period, assuming trading
occurred on the Principal Market during each day of such Valuation Period or (b)
if trading did not occur on the Principal Market on each day of the originally
scheduled Valuation Period, the Average Share Price for the number of days in
the originally scheduled Valuation Period on which trading on the Principal
Market did occur (in either case, a "Determination Date"). In the event that
trading of the Common Stock recommences after a suspension of 120 days or more,
the Valuation Period in progress at the time of such suspension shall recommence
and shall be redefined as the period (the "Post Suspension Valuation Period")
consisting of the number of days in the originally scheduled Valuation Period
which occurred prior to the relevant suspension plus the number of days in the
originally scheduled Valuation Period which occurred following the end of the
relevant suspension. Furthermore, on the 120th day of said suspension, for
purposes of determining the Average Share Price, the Investors shall elect, at
their option, to utilize either (a) the originally scheduled Valuation Period,
or in the event that trading did not occur on the Principal Market on each day
of the originally scheduled Valuation Period, the number of days of the
originally scheduled Valuation Period on which trading on the Principal Market
did occur, or (b) the Post Suspension Valuation Period. If the Investors elect
option (b) above, and if, based on the Average Share Price during the Post
Suspension Valuation Period, the Investors would be entitled, pursuant to
Section 1.3(d), to receive an amount of Additional Shares in excess of any
Additional Shares issued to the Investors on the 120th day following the
relevant suspension, Company shall deliver to the Investors, within two business
days of the last day of the Post-Suspension Valuation Period such excess amount
of Additional Shares. If, however, based on the Average Share Price during the
Post Suspension Valuation Period, the Investors would be entitled, pursuant to
Section 1.3(d) to fewer Additional Shares than the number of Additional Shares
issued to the Investors on the 120th relevant suspension, then the Investors
shall make a payment in cash to the Company such that the total dollar amount
paid to the Company with respect to the Shares issued in connection with the
relevant Put Notice equals the product of (a) 79% of the Average Share Price for
the relevant Post Suspension Valuation Period and (b) the Shares issued in
connection with the relevant Put Notice, such payment to be made within two
business days of the last day of the Post Suspension Valuation Period.



<PAGE> 12

                                  Article II.
                                  -----------
                         Representations and Warranties
                         ------------------------------

      Section 2.1.  Representations and Warranties of the Company.  The Company
hereby makes the following representations and warranties to the Investors:

           (a) Organization and Qualification. The Company is a corporation duly
incorporated and existing in good standing under the laws of the State of
Delaware, and has the requisite corporate power to own its properties and to
carry on its business as now being conducted. The Company does not have any
subsidiaries, except for those identified in the SEC Documents. Each of the
Company's subsidiaries is a corporation duly incorporated and existing in good
standing under the laws of its jurisdiction of organization. Each of the Company
and its subsidiaries is duly qualified as a foreign corporation to do business
and is in good standing in every jurisdiction in which the nature of the
business conducted or property owned by it makes such qualification necessary,
except where the failure so to qualify would not have a Material Adverse Effect.
"Material Adverse Effect" means any adverse effect on the operations,
properties, prospects, or financial condition of the entity with respect to
which such term is used and which is material to such entity and other entities
controlling or controlled by such entity taken as a whole.

           (b) Authorization; Enforcement. (i)  The Company has the requisite
corporate power and authority to enter into and perform this Agreement, the
Registration Rights Agreement and the Warrants and to issue all Shares and
Additional Shares in accordance with the terms hereof and thereof, (ii) the
execution and delivery of this Agreement, the Registration Rights Agreement and
the Warrants by the Company and the consummation by it of the transactions
contemplated hereby and thereby have been duly authorized by all necessary
corporate action, and no further consent or authorization of the Company or its
Board of Directors or Stockholders is required, (iii) this Agreement, the
Registration Rights Agreement and the Warrants have been duly executed and
delivered by the company, and (iv) this Agreement, the Registration Rights
Agreement and the Warrants constitute valid and binding obligations of the
Company enforceable against the Company in accordance with their terms, except
as such enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium, liquidation or similar laws relating to, or
affecting generally the enforcement of, creditors, rights and remedies or by
other equitable principles of general application.

           (c) Capitalization.  As of April 27, 1996, the authorized capital
stock of the Company and the shares thereof currently issued and outstanding are
as described in the Company's quarterly report on Form 10-Q for the period then

<PAGE> 13

ended. All of the outstanding shares of the Company's Common Stock have been
validly issued and are fully paid and nonassessable. No shares of Common Stock
are entitled to preemptive rights. The Company has furnished to the Investors
true and correct copies of the Company's Certificate of Incorporation as in
effect on the date hereof (the "Certificate"), and the Company's By-Laws, as in
effect on the date hereof (the "By-Laws").

           (d)  Issuance of Shares.  The issuance of all Shares and Additional
Shares has been duly authorized and all such Shares, when paid for or issued in
accordance with the terms hereof and pursuant to the Warrants, shall be validly
issued, fully paid and non-assessable. The Company has authorized and reserved
for issuance to Investors the requisite number of shares of Common Stock to be
issued pursuant to the Warrants. The issuance, sale and delivery of the Shares
and Additional Shares is not subject to any preemptive right of stockholders of
the Company arising under law or the Certificate or By-laws or to any
contractual right of first refusal or other right in favor of any person.

           (e)  Agreements.  As of the date of this Agreement, there has been no
breach or default by the Company, or to the best of the Company's knowledge, by
any other party thereto, of any provisions of any material agreements to which
the Company is a party, and nothing has occurred which, with lapse of time or
the giving of notice of both, would constitute a breach or default by the
Company, or to the best of the Company's knowledge, by any other party thereto.

           (f) Brokers.  None of the Investors shall be responsible for any fees
of any broker, finder, commission agent or other person incurred by the Company
in connection with this Agreement and the transactions contemplated hereby.

           (g)  No Conflicts.  The execution, delivery and performance of this
Agreement and the Registration Rights Agreement by the Company and the
consummation by the Company of the transactions contemplated hereby and thereby
do not and will not (i) result in a violation of the Company's Certificate or
By-Laws or (ii) conflict with, or constitute a default (or an event which with
notice or lapse of time or both would become a default) under, or give to others
any rights of termination, amendment, acceleration or cancellation of, any
agreement, indenture or instrument to which the Company is a party and is still
in effect, or result in a violation of any federal, state, local or foreign law,
rule, regulation, order, judgment or decree (including Federal and state
securities laws and regulations) applicable to the Company, or by which any
property or asset of the Company is bound or affected (except for such
conflicts, defaults, terminations, amendments, accelerations, cancellations and
violations as would not, individually or in the aggregate, have a Material
Adverse Effect or impair the Company's ability to

<PAGE> 14

consummate the transactions contemplated hereby). The business of the Company
is not being conducted in violation of any law, ordinance or regulations of
any governmental entity, except for possible violations which either singly
or in the aggregate do not have a Material Adverse Effect. The Company is not
required under Federal, state or local law, rule or regulation in the United
States to obtain any consent, authorization or order of, or make any filing or
registration with, any court or governmental agency in order for it to execute,
deliver or perform any of its obligations under this Agreement or the
Registration Rights Agreement or issue and sell any Shares or Additional Shares
in accordance with the terms hereof and under the Warrants (other than any NASD
filings which may be required to be made by the Company subsequent to any
Closing, and the Registration Statement and compliance with applicable state
securities or "blue sky" laws).

               (h) (i) SEC Documents; Financial Statements. The Common Stock of
the Company is registered pursuant to Section 12(g) of the Exchange Act and the
Company has filed all reports, schedules, forms, statements and other documents,
together with all exhibits, financial statements and schedules thereto required
to be filed by it with the SEC pursuant to the reporting requirements of the
Exchange Act, including material filed pursuant to Section 13(a) or 15(d), (all
of the foregoing, whether heretofore or hereafter filed with the SEC, and the
Registration Statement, when declared effective, being hereinafter referred to
herein as the "SEC Documents"). The Company has not provided to the Investors
any information which, according to applicable law, rule or regulation, should
have been disclosed publicly by the Company but which has not been so disclosed,
other than with respect to the transactions contemplated by this Agreement. As
of their respective dates, the SEC Documents complied in all material respects
with the requirements of the Exchange Act or the 1933 Act, as the case may be,
and the rules and regulations of the SEC promulgated thereunder and other
federal, state and local laws, rules and regulations applicable to such SEC
Documents, and none of the SEC Documents contained any untrue statement of a
material fact or omitted to state a material fact required to be stated therein
or necessary in order to make the statements therein, in light of the
circumstances under which they were made, not misleading. As of the date of
delivery by the Investors of the prospectus contained in the Registration
Statement in connection with sales of Shares by the Investors, such prospectus
will comply in all material respects with the requirements of the 1933 Act and
the rules and regulations of the SEC promulgated thereunder, and other federal,
state and local laws, rules and regulations applicable to such prospectus. The
financial statements of the Company included in the SEC Documents comply as to
form in all material respects with applicable accounting requirements and the
published rules and regulations of the SEC or other applicable rules and
regulations with respect thereto. Such financial statements have been prepared
in accordance with generally

<PAGE> 15

accepted accounting principles applied on a consistent basis during the periods
involved (except (i) as may be otherwise indicated in such financial statements
or the notes thereto or (ii) in the case of unaudited interim statements, to the
extent they may not include footnotes or may be condensed or summary statements)
and fairly present in all material respects the financial position of the
Company as of the dates thereof and the results of operations and cash flows for
the periods then ended (subject, in the case of unaudited statements, to normal
year-end audit adjustments).

               (ii) The SEC has not issued an order preventing or suspending the
use of any prospectus relating to the offering of any Shares nor instituted
proceedings for that purpose.

           (i)  No Material Adverse Change.  No event has occurred which has had
or is reasonably likely to have Material Adverse Effect with respect to the
Company since (i) in the case of the first Closing hereunder, the last day of
the period to which the Company's most recent Form 10-K or 10-Q, as the case may
be, filed by the Company with the SEC relates and (ii) in the case of subsequent
Closings hereunder, the last day of the period to which the Company's Form 10-K
or 10-Q, as the case may be, filed by the Company with the SEC most proximately
to the applicable Closing hereunder relates.

           (j)  No Undisclosed Liabilities.  The Company has no liabilities or
obligations not disclosed in (i) in the case of the first Closing hereunder, the
Company's most recent Form 10-K or 10-Q, as the case may be, filed by the
Company with the SEC and (ii) in the case of subsequent Closings hereunder, the
last day of the period to which the Company's Form 10-K or 10-Q, as the case may
be, filed by the Company with the SEC most proximately to the applicable Closing
hereunder relates, other than those incurred in the ordinary course of the
Company's business and which, individually or in the aggregate, do not or would
not have a Material Adverse Effect on the Company.

           (k) No Undisclosed Events or Circumstances.  No event or circumstance
has occurred or exists with respect to the Company or its business, properties,
prospects, operations or financial condition, which, would be required to be
disclosed by the Company under either the 1933 Act or the Exchange Act or other
applicable law but which has not been so publicly announced or disclosed.

           (l)  Litigation.  Except as may be set forth in the SEC Documents,
there are no lawsuits or proceedings pending or to the best knowledge of the
Company threatened, against the Company, nor has the Company received any
written or oral notice of any such action, suit, proceeding or investigation,
which might have a Material Adverse Effect on the Company. Except as set forth
in the SEC Documents no judgment, order, writ, injunction or decree or award has
been issued by or, so far as is known by the

<PAGE> 16

Company, requested of any court, arbitrator or governmental agency which might
result in a Material Adverse Effect on the Company or which might impair the
Company's ability to consummate the transactions contemplated by this Agreement.

           (m) Intellectual Property.  To the best of its knowledge, the Company
and its subsidiaries validly own or have the right to use all material
copyrights, trademarks, patents and other intellectual property rights
(collectively, "Intellectual Property") material to the operation of their
business, and such Intellectual Property is not subject to any material
infringement, except as otherwise disclosed in the SEC Documents. Except as
disclosed in the SEC Documents, to the best of the Company's knowledge, the
Company is not in any way making any unlawful or wrongful use of any
Intellectual Property of any third party which might result in a Material
Adverse Effect on the Company or which might materially adversely affect the
transactions contemplated by this Agreement.

           (n) Principal Market. As of the date of this Agreement, the Principal
Market on which the shares of Common Stock are traded is the Nasdaq Stock
Market's National Market.

      Section 2.2.  Representations and Warranties of the Investors.  The
Investors hereby make the following representations and warranties to the
Company:

           (a)  Authorization; Enforcement. (i) The Investors have the requisite
power and authority to enter into and perform this Agreement and to purchase the
Shares to be sold hereunder, (ii) the execution and delivery of this Agreement
by the Investors and the consummation by them of the transactions contemplated
hereby have been duly authorized by all necessary corporate or partnership
action, as the case may be, and no further consent or authorization of the
Investors or their respective Boards of Directors, stockholders, or partners, as
the case may be, is required, (iii) this Agreement has been duly authorized,
executed and delivered by the Investors, and (iv) this Agreement constitutes a
valid and binding obligation of the Investors enforceable against the Investors
in accordance with its terms, except as enforceability may be limited by
applicable bankruptcy, insolvency, reorganization, moratorium, liquidation or
similar laws relating to, or affecting generally the enforcement of, creditors,
rights and remedies or by other equitable principles of general application.

           (b) Consents.  The Investors are not required to obtain any consent,
authorization or order of, or make any filing or registration with, any court or
governmental agency in order for it to execute, deliver or perform any of its
obligations under this Agreement or purchase the Shares or the Additional Shares
in accordance with the terms hereof; provided that for purposes of the
representation made in this sentence, the Investors are

<PAGE> 17

assuming and relying upon the accuracy of the relevant representations and
agreements of the Company herein.

           (c) Ownership; Access to Information.  The Investors are duly
organized and validly existing under the laws of their respective jurisdiction
of organization and have been afforded, to the satisfaction of the Investors,
the opportunity to review the SEC Documents and obtain such additional publicly
available information concerning the Company and its business, and to ask such
questions and receive such answers (based upon publicly available information),
as the Investors deem necessary to make an informed investment decision.

           (d) Investment Representations. (i) Experience; Accredited Investors.
Each of the Investors is experienced in evaluating and investing in high
technology companies. Each of the Investors understands and acknowledges that
its investment in the Shares is highly speculative and there are substantial
risks of loss incident to a purchase of the Shares. Each of the Investors is
familiar with the definition of "Accredited Investor" set forth in Regulation D
promulgated by the Commission under the 1933 Act and meets the conditions
required to qualify as an Accredited Investor.

               (ii) Investment. Each of the Investors is acquiring the Shares
for investment for its own account and not with the view to, or for resale in
connection with, any distribution thereof in any transaction which would be a
violation by the Investors of the 1933 Act or any other securities laws of the
United States or any state. Each of the Investors understands that the sale of
the Shares to the Investors has not been registered under the 1933 Act, and that
the Shares are being sold pursuant to an exemption from the registration
requirements of the 1933 Act, the availability of which depends upon, among
other things, the bona fide nature of its investment intent as expressed herein.
Each of the Investors represents, warrants and agrees that it will not sell or
otherwise transfer any interest in the Shares without registration under the Act
or an exemption therefrom; provided, however, that by making the representations
in this Section 2.2(d), the Investors do not agree to hold the Shares for any
minimum or other specific term and reserve the right to dispose of all Shares at
any time in accordance with Federal securities laws applicable to such
disposition.

               (iii) Legends. Each of the Investors understands that each
certificate representing the Shares shall bear the following legend and any
other legend required by applicable state securities law:

          THESE SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
          1933 (THE "ACT") AND MAY NOT BE TRANSFERRED OR RESOLD EXCEPT PURSUANT
          TO AN EFFECTIVE

<PAGE> 18

          REGISTRATION UNDER THE ACT OR IN A TRANSACTION WHICH, IN THE OPINION
          OF COUNSEL REASONABLY SATISFACTORY TO AMATI COMMUNICATIONS
          CORPORATION, QUALIFIES AS AN EXEMPT TRANSACTION UNDER THE ACT AND THE
          RULES AND REGULATIONS PROMULGATED THEREUNDER.

          A certificate shall not bear such legend if the Investors shall have
delivered to the Company an opinion of counsel reasonably satisfactory to the
Company to the effect that the securities being sold may be publicly sold
without registration under the Securities Act. The foregoing shall not be deemed
to affect the obligations of the Company under Section 1.6 hereof or the
Registration Rights Agreement.


                                  Article III.
                                  ------------
                                   Covenants
                                   ---------

      Section 3.1.  Securities Compliance.

           (a) The Company shall notify the SEC and the Principal Market and any
other applicable market in accordance with their requirements, of the
transactions contemplated by this Agreement, and shall take all other necessary
action and proceedings as may be required and permitted by applicable law, rule
and regulation, for the legal and valid issuance of all Shares to the Investors.

           (b)  The Company will cause its Common Stock to continue to be
registered under Sections 12(b) or 12(g) of the Exchange Act, will comply in all
respects with its reporting and filing obligations under said act, will comply
with all requirements related to the Registration Statement, and will not take
any action or file any document (whether or not permitted by said Act or the
rules thereunder) to terminate or suspend such Registration Statement or to
terminate or suspend its reporting and filing obligations under the Exchange
Act, except as permitted herein. The Company will take all action necessary to
continue the listing or trading of its Common Stock (including the Shares) on
the Principal Market including, taking all action necessary to cause the Shares
and the Additional Shares that are issuable under this Agreement and the Warrant
to be authorized for listing on the Principal Market, subject to official notice
of issuance; and will comply in all respects with the Company's reporting,
filing and other obligations under the bylaws or rules of the Principal Market.

      Section 3.2. Preliminary Put Notice. In order to provide the Investors
adequate opportunity to conduct appropriate due diligence in connection with the
Second Put Notice, the Company shall deliver to the Investors, at least five (5)
business days prior to the delivery of the Second Put Notice, a Preliminary Put
Notice which Notice shall state that the Company is considering

<PAGE> 19

delivery of a Put Notice to the Investors five (5) or more business days
following delivery of the Preliminary Put Notice. In no event shall delivery
of a Preliminary Put Notice to the Investors obligate the Company to deliver
any Put Notice to the Investors, provided, however that if the Company fails
to deliver a Put Notice within thirty days of delivery of a Preliminary Put
Notice, then the Company shall pay the reasonable due diligence costs of the
Investors with respect to such Preliminary Put Notice.

      Section 3.3. Certain Restrictions. The Investors shall not engage in short
selling of the Common Stock prior to the effectiveness of the Registration
Statement in respect of the shares to be purchased and sold pursuant to the
first Put Notice.


                                  Article IV.
                                  -----------
                                   Conditions
                                   ----------

      Section 4.1. Conditions Precedent to the Obligation of the Company to Sell
Shares.  The obligation hereunder of the Company to issue and/or sell the Shares
(other than the Warrant Shares) to the Investors is further subject to the
satisfaction, at or before the respective issuance and deliveries thereof, of
each of the following conditions set forth below. These conditions are for the
Company's sole benefit and may be waived by the Company at any time in its sole
discretion.

           (a)  Accuracy of the Investors Representations and Warranties. The
representations and warranties of the Investors shall be true and correct in all
material respects as of the date when made and as of the date of such issuance
and delivery as though made at that time.

           (b) Performance by the Investors. The Investors shall have performed,
satisfied and complied in all material respects with all covenants, agreements
and conditions required by this Agreement to be performed, satisfied or complied
with by the Investors at or prior to such date.

           (c)  No Injunction.  No statute, rule, regulation, executive order,
decree, ruling or injunction shall have been enacted, entered, promulgated or
endorsed by any court or governmental authority of competent jurisdiction which
prohibits the consummation of any of the transactions contemplated by this
Agreement.

      Section 4.2. Conditions Precedent to the Obligation of the Investors to
Purchase any Shares. The obligation of the Investors hereunder to acquire and
pay for Shares other than Warrant Shares is subject to the satisfaction, at or
before each Closing of each of the following conditions set forth below.

<PAGE> 20

These conditions are for the Investors' sole benefit and may be waived by the
Investors at any time in its sole discretion.

           (a)  Accuracy of the Company's Representations and Warranties.  The
representations and warranties of the Company shall be true and correct in all
material respects as of the date when made and as of each Closing Date, as
though made at that time (except for (i) representations and warranties that
speak as of a particular date or refer to a particular point in time which shall
be true and correct as of such date or time and (ii) the representation and
warranty contained in Section 2.1(i)).

           (b)  Performance by the Company.  The Company shall have performed,
satisfied and complied in all material respects with all covenants, agreements
and conditions required by this Agreement to be performed, satisfied or complied
with by the Company at or prior to such Closing.

           (c)  No Injunction.  No statute, rule, regulation, executive order,
decree, ruling or injunction shall have been enacted, entered, promulgated or
endorsed by any court or governmental authority of competent jurisdiction which
prohibits the consummation of any of the transactions contemplated by this
Agreement.

           (d) Opinion of Counsel, Etc. At each Closing the Investors shall have
received an opinion of Heller, Ehrman, White & McAuliffe, counsel to the
Company, (in substantially the form of Exhibit A hereto), dated the effective
date of such Closing, and such other certificates, opinions of other counsel,
and documents as the Investors or their counsel shall reasonably require
incident to such Closing.

           (e)  Effectiveness of Registration Statement and Registration Rights
Agreement.  The Registration Statement shall be effective at the time of each
Closing and no stop order suspending the effectiveness of the Registration
Statement shall have been instituted or shall be pending. The Company and the
Investors shall have entered into the Registration Rights Agreement
substantially in the form of Exhibit B hereto (the "Registration Rights
Agreement"), and such Agreement shall be in full force and effect.

           (f)  Accuracy of Registration Statement. At the time of each Closing,
the Registration Statement (including information or documents incorporated by
reference therein) and any amendments or supplements thereto shall not contain
any untrue statement of a material fact or omit to state any material fact
required to be stated therein or necessary to make the statements therein, in
light of the circumstances under which they were made, not misleading.

           (g)  Comfort Letter.  The Investors, at each Initial Closing, shall
have received a comfort letter from the Company's

<PAGE> 21

independent auditors of the type customarily delivered to underwriters in
connection with a firm commitment underwritten public offerings.

           (h)  Officer's Certificate.  At each Closing the Investors shall have
received a certificate) from the CEO and/or CFO of the Company in substantially
the form of Exhibit C hereto.

          (i)  No Bankruptcy Filing. There shall have been no filing of a
petition in bankruptcy, either voluntarily or involuntarily with respect to the
Company and there shall not have commenced any proceedings under any bankruptcy
or insolvency laws, or any laws relating to the relief of debtors, readjustment
of indebtedness or reorganization of debtors and there shall have been no
calling of a meeting of creditors of the Company or appointment of a committee
of creditors or liquidating agents or offering of a composition or extension to
creditors by, for, with or without the consent or acquiescence of the Company.

           (j) Principal Market Listing. The Shares and any Additional Shares to
be issued at such Closing shall have been approved for listing on the Principal
Market, subject to official notice of issuance.


                                   Article V.
                                   ----------
                                  Termination
                                  -----------

      Section 5.1. Optional Termination. This Agreement may be terminated at any
time by the mutual consent of the Company and the Investors, provided that the
provisions of Sections 1.3, 1.6, 1.8 and 1.9 and Article VI and the
representations, warranties and covenants contained in this Agreement shall
survive its termination for the period of any applicable statute of limitations,
and provided further that if a decision to terminate the Agreement is made
during any Valuation Period (including, without limitation, any suspended
Valuation Period), such termination shall not be effective until thirty (30)
days after such Valuation Period has elapsed.

      Section 5.2. Automatic Termination.  This Agreement shall automatically
terminate without any further action of either party hereto when (a) the
Investors have invested an aggregate of $15,000,000 in the Common Stock of the
Company pursuant to this Agreement and (b) all Valuation Periods with respect to
all Put Notices have expired, and no further adjustments or payments must be
made pursuant to Section 1.3 herein provided that the provisions of Sections
1.3, 1.6, 1.8, and 1.9 and Article VI and the representations, warranties and
covenants contained in this Agreement shall survive the termination of this
Agreement for the period of any applicable statute of limitations.



<PAGE>22


      All representations, warranties and covenants shall survive each Closing
and termination of this Agreement.

      Section 5.3. Change in Control. From and after the date hereof, upon any
Change of Control (as defined below), the Company shall no longer have the right
to deliver any Put Notice to the Investors. A "Change of Control" shall mean any
transaction or series of transactions which results in any person or affiliated
group of persons gaining control of 50% or more of the voting stock of the
Company or 50% or more of the Company's Board of Directors.


                                  Article VI.
                                  -----------
                                 Miscellaneous
                                 -------------

      Section 6.1. Fees and Expenses; Warrants.

           (a)  The Company shall promptly pay all of the out-of-pocket fees and
expenses incurred (including legal fees and expenses) by the Investors in
connection with the due diligence preparation, negotiation, execution and
delivery of this Agreement and the transactions contemplated hereunder. The
Company shall pay all stamp and other taxes and duties levied in connection with
the issuance of any Shares issued pursuant hereto.

           (b)  Upon execution hereof, the Investors shall purchase from the
Company, and the Company shall deliver to the Investors warrants substantially
in the forms of Exhibits D and E hereto (the "Warrants") to purchase an
aggregate of 600,000 shares of the Common Stock.

      Section 6.2. Specific Enforcement; Consent to Jurisdiction.

           (a)  The Company and the Investors acknowledge and agree that
irreparable damage would occur in the event that any of the provisions of this
Agreement were not performed in accordance with their specific terms or were
otherwise breached. It is accordingly agreed that the parties shall be entitled
to an injunction or injunctions to prevent or cure breaches of the provisions of
this Agreement and to enforce specifically the terms and provisions hereof, this
being in addition to any other remedy to which either of them may be entitled by
law or equity.

           (b)  Each of the Company and each of the Investors (i) hereby
irrevocably submits to the exclusive jurisdiction of the United States District
Court and other courts of the United States sitting in Delaware for the purposes
of any suit, action or proceeding arising out of or relating to this Agreement
and (ii) hereby waives, and agrees not to assert in any such suit, action or
proceeding, any claim that it is not personally subject to the jurisdiction of
such court, that the suit, action or

<PAGE> 23

proceeding is brought in an inconvenient forum or that the
venue of the suit, action or proceeding is improper. Each of the Company and
each of the Investors consents to process being served in any such suit, action
or proceeding by mailing a copy thereof to such party at the address in effect
for notices to it under this Agreement and agrees that such service shall
constitute good and sufficient service of process and notice thereof. Nothing in
this paragraph shall affect or limit any right to serve process in any other
manner permitted by law.

      Section 6.3. Entire Agreement; Amendments. Other than with respect to
matters set forth in the Warrants, this Agreement and the Registration Rights
Agreement contain the entire understanding of the parties with respect to the
transactions contemplated hereby and, except as specifically set forth herein,
neither the Company nor any of the Investors makes any representation, warranty,
covenant or undertaking with respect to such matters. No provision of this
Agreement may be waived or amended other than by a written instrument signed by
the party against whom enforcement of any such amendment or waiver is sought.

      Section 6.4. Notices. Any notice or other communication required or
permitted to be given hereunder shall be in writing and shall be effective upon
hand delivery or delivery by facsimile at the address or number designated below
(if delivered on a business day during normal business hours where such notice
is to be received), or the first business day following such delivery (if
delivered other than on a business day during normal business hours where such
notice is to be received). The addresses for such communications shall be:

          to the Company:

                    Amati Communications Corporation
                    2043 Samaritan Drive
                    San Jose, CA  95124
                    Attn:  James Steenbergen
                    Fax:  (408) 879-2900

          with copies to:

                    Heller, Ehrman, White & McAuliffe
                    525 University Avenue
                    Palo Alto, CA 94301
                    Attn:  Richard A Peers
                    Fax:  (415) 324-0638



<PAGE> 24


          to the Investors:

                    The Chatterjee Group
                    888 Seventh Avenue - Suite 3000
                    New York, New York 10106
                    Attn:  Peter Hurwitz
                    Fax:  (212) 262-9637

                    Quantum Industrial Partners LDC
                    Kaya Flamboyan 9
                    Willemstad, Curacao
                    Netherlands Antilles
                    Attn:  Ben Jansen
                    Fax:  011 599 9322 402

                    Winston Partners II LDC
                    Kaya Flamboyan 9
                    Willemstad, Curacao
                    Netherlands Antilles
                    Attn:  Ben Jansen
                    Fax:  011 599 9322 402

          with copies to:

                    Willkie Farr & Gallagher
                    153 East 53rd Street
                    New York, New York 10022
                    Attention:  Christopher E. Manno
                    Fax:  (212) 821-8111

                    Soros Fund Management
                    888 Seventh Avenue - Suite 3300
                    New York, New York 10106
                    Attn:  Michael Neus
                    Fax:  (212) 664-0544

Either party hereto may from time to time change its address for notices under
this Section 6.4 by giving written notice of such changed address to the other
party hereto.

      Section 6.5.  Waivers.  No waiver by either party of any default with
respect to any provision, condition or requirement of this Agreement shall be
deemed to be a continuing waiver in the future or a waiver of any other
provision, condition or requirement hereof, nor shall any delay or omission of
either party to exercise any right hereunder in any manner impair the exercise
of any such right accruing to it thereafter. The parties hereto waive any and
all rights to a jury trial in connection with any action or proceeding arising
under this Agreement, the Warrants or the transactions contemplated hereby or
thereby.

      Section 6.6. Headings.  The headings herein are for convenience only, do
not constitute a part of this Agreement and

<PAGE> 25


shall not be deemed to limit or affect any of the provisions hereof.

      Section 6.7. Successors and Assigns. This Agreement shall be binding upon
and inure to the benefit of the parties and their successors and assigns. The
parties hereto may amend this Agreement without notice to or the consent of any
third party. Neither the Company nor the Investors shall assign this Agreement
or any rights or obligations hereunder without the prior written consent of the
other (which consent may be withheld for any reason in the sole discretion of
the party from whom consent is sought); provided, however, that the Company may
assign its rights and obligations hereunder to any acquirer of substantially all
of the assets or a controlling equity interest of the Company provided that such
assignment shall be subject to (i) the Change of Control provisions contained in
Section 5.3 above and (ii) Investors' prior written consent which consent may
not be unreasonably withheld. The assignment by a party of this Agreement or any
rights hereunder shall not affect the obligations of such party under this
Agreement.

      Section 6.8.  No Third Party Beneficiaries. This Agreement is intended for
the benefit of the parties hereto and any Indemnified Party and their respective
permitted successors and assigns and is not for the benefit of, nor may any
provision hereof be enforced by, any other person.

      Section 6.9.  Governing Law.  This Agreement shall be governed by and
construed and enforced in accordance with the internal laws of Delaware without
regard to the principles of conflict of laws.

      Section 6.10.  Execution.  This Agreement may be executed in two or more
counterparts, all of which shall be considered one and the same agreement and
shall become effective when counterparts have been signed by each party and
delivered to the other party, it being understood that both parties need not
sign the same counterpart. In the event any signature is delivered by facsimile
transmission, the party using such means of delivery shall cause four additional
executed signature pages to be physically delivered to the other party within
five days of the execution and delivery hereof.

      Section 6.11.  Publicity.  The Company and the Investors shall consult and
cooperate with each other in issuing any press releases or otherwise making
public statements with respect to the transactions contemplated hereby, provided
the foregoing shall not interfere with the legal obligations of either party
with respect to public disclosure; and provided further, that neither the
Company nor the Investors shall be required to consult with the other if any
such press release or public statement does not specifically name the other.



<PAGE> 26


      IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized officers as of the date hereof.

                                   AMATI COMMUNICATIONS CORPORATION


                                   By: /s/ James Steenbergen
                                        Name: James Steenbergen
                                        Title: President, CEO, CFO
                                        Date: October 3, 1996


                                   QUANTUM INDUSTRIAL PARTNERS LDC


                                   By: /s/ Sean C. Warren
                                        Name: Sean C. Warren
                                        Title: Attorney-in-Fact


                                   S-C PHOENIX HOLDINGS, L.L.C.


                                   By: /s/ Sean C. Warren
                                        Name: Sean C. Warren
                                        Title: Manager


                                   WINSTON PARTNERS, L.P.


                                   By:  Chatterjee Fund Management, its
                                        general partner

                                   By: /s/ Peter Hurwitz
                                        Name:
                                        Title:


                                   WINSTON PARTNERS II LDC


                                   By: /s/ Peter Hurwitz
                                        Name:
                                        Title:


                                   WINSTON PARTNERS II L.L.C.


                                   By: Chatterjee Advisors L.L.C., its manager

                                   By: /s/ Peter Hurwitz
                                        Name:
                                        Title:




<PAGE>


                                                               SCHEDULE I



                             PARTICIPATION SCHEDULE
                             ----------------------

Investor                                               Participation

Quantum Industrial Partners LDC                             50.00%

S-C Phoenix Holdings, L.L.C.                                25.00%

Winston Partners, L.P.                                       8.33%

Winston Partners II LDC                                     11.12%

Winston Partners II L.L.C.                                   5.55%

                                                           100.00%



<PAGE> A-1


                                                                       Exhibit A

                                                                          (Date)


Quantum Industrial Partners LDC
S-C Phoenix Holdings, L.L.C.
Winston Partners I, L.P.
Winston Partners II LDC
Winston Partners II LLC
c/o The Chatterjee Group
888 Seventh Avenue
Suite 3000
New York, N.Y. 10106

Re:  Investment in Amati Communications Corporation

Ladies and Gentlemen:

We have acted as counsel to Amati Communications Corporation, a Delaware
corporation (the "Company"), in connection with the proposed sale and issuance
of authorized but previously unissued shares of the Company's common stock,
$0.20 par value per share (the "Shares"), pursuant to the Investment Agreement
("Agreement") entered into on __________, 1996, between the Company and Quantum
Industrial Partners LDC, S-C Phoenix Holdings, L.L.C., Winston Partners I, L.P.,
Winston Partners II LDC and Winston Partners II LLC ("Investors"). Capitalized
terms used herein and not defined herein shall have the meanings ascribed
thereto in the Agreement.

[Additional Introduction]

      Based upon and subject to the foregoing, we are of the opinion that:

      1. The Company has been duly incorporated and is validly existing and in
good standing under the laws of the State of Delaware and is in good standing
under the laws of the State of California. The Company has the requisite
corporate power to own its properties and to carry on its business as such
properties and business are described in the Company's Annual Report on Form
10-K. The Company does not have any subsidiaries, except for those identified in
the SEC Documents. Each of the Company's subsidiaries has been duly incorporated
and is validly existing in good standing under the laws of its jurisdiction of
organization. Each of the Company and its subsidiaries is duly qualified as a
foreign corporation to do business and is in good standing in every jurisdiction
in which the nature of the business conducted or property owned by it makes such
qualification necessary, except where the failure so to qualify would not have a
Material Adverse Effect.



<PAGE> A-2


      2. (i) The Company has the requisite corporate power and authority to
enter into and perform the Agreement, the Registration Rights Agreement and the
Warrants and to issue the Shares and the Warrants in accordance with the terms
of the Agreement and the Warrants, (ii) the Agreement, the Registration Rights
Agreement and the Warrants have been duly authorized by all necessary corporate
action on the part of the Company, (iii) the Agreement, the Registration Rights
Agreement and the Warrants have been duly executed and delivered by the Company,
and (iv) the Agreement, the Registration Rights Agreement and the Warrants are
valid and binding obligations of the Company enforceable against the Company in
accordance with their respective terms, subject as to enforcement, (i) to
bankruptcy, insolvency, reorganization, arrangement, moratorium, and other laws
of general applicability relating to, or affecting creditors' rights and (ii) to
general principles of equity whether such enforcement is considered in a
proceeding in equity or at law.

      3.  No shares of Common Stock are entitled to preemptive rights.

      4.  When delivered and paid for in accordance with the terms of the
Agreement or upon exercise of the Warrants, the Shares shall be duly authorized,
validly issued, fully paid and non-assessable. The Company has reserved for
issuance the requisite number of shares of Common Stock to be issued pursuant to
the Warrants.

      5.  Neither the execution and delivery of the Agreement, the Registration
Rights Agreement and the Warrants by the Company nor the consummation by the
Company of the transactions contemplated by the Agreement and the Warrants will
(i) conflict with any provision of the Company's Certificate of Incorporation or
By-laws, (ii) violate any law applicable to the Company or, (iii) to our
knowledge, result in a breach or violation of, or constitute a default (or an
event which with notice or lapse of time or both would become a default) under
any agreement, indenture or instrument to which the Company is a party and which
has been filed as an exhibit in SEC Documents.

      6.  No governmental consents, approvals, authorizations, registrations,
declarations or filings are required for the execution and delivery of the
Agreement, the Registration Rights Agreement and the Warrants on behalf of the
Company and consummation by the Company of the transactions contemplated
thereunder except (i) such as have been obtained or made and (ii) if required,
the filing of a Form 10-C following the sale of Shares pursuant to the
Agreement. Assuming the representations and warranties given by the Investors in
the Investment Agreement are true and correct in all material respects, none of
the issuance, sale and delivery of the Shares, Additional Shares or the Warrants
to the Investors requires any registration under the Act.



<PAGE> A-3


      7.  Other than as described in the SEC Documents, we do not have knowledge
of any action, suit or proceeding pending or threatened in writing against the
Company.

      8.  Based on a letter from the staff of the Securities and Exchange
Commission (the "Commission") dated _____________, the Registration Statement
has become effective under the Securities Act of 1933 (the "Act"). We do not
know of the issuance of any stop order suspending the effectiveness of the
Registration Statement by the Commission or of any proceeding for that purpose
under the Act which has been instituted or threatened.

      9.  As of , the Registration Statement and the Prospectus complied as to
form in all material respects with the requirements of the Act and the published
rules and regulations of the Commission thereunder.

      In addition, we have participated in discussions with various
representatives of the Company and its independent public accountants, in which
the business and affairs of the Company and the contents of the Registration
Statement and the prospectus contained therein (the "Prospectus") were
discussed. No facts have come to our attention in the course of those
discussions that have led us to believe that, as of the date hereof, the
Registration Statement and the Prospectus taken together (other than the
financial statements, schedules and other financial data included therein and
information provided in writing by the Investors for inclusion therein, with
respect to which we express no view or belief) contain an untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading. However, we did not conduct an independent
verification of any factual matters, and do not assume responsibility for the
accuracy, completeness, or fairness of any of the statements contained in the
Registration Statement or the Prospectus.

      The opinions expressed herein are given to you solely for your use in
connection with the Agreement and may not be relied upon by any other person or
entity or for any other purpose without our prior consent.

                                        Very truly yours,

<PAGE>B-1
                                                            EXHIBIT B

                        AMATI COMMUNICATIONS CORPORATION

                          REGISTRATION RIGHTS AGREEMENT


               REGISTRATION RIGHTS AGREEMENT, dated as of October 3, 1996, among
the investors listed on the signature pages hereto (the "Investors") and Amati
Communications Corporation, a Delaware corporation (the "Company").

                                 R E C I T A L S

               WHEREAS, the Investors have, pursuant to the terms of the
Investment Agreement, dated as of the date hereof, by and among the Company and
the Investors (the "Agreement"), agreed to purchase shares of Common Stock, par
value $0.20 per share, of the Company (the "Common Stock") and Warrants to
purchase shares of Common Stock; and

               WHEREAS, the Company has agreed, as a condition precedent to the
Investors' obligations under the Agreement, to grant the Investors certain
registration rights; and

               WHEREAS, the Company and the Investors desire to define the
registration rights of the Investors on the terms and subject to the conditions
set forth herein and in Section 1.6 of the Agreement.

               NOW, THEREFORE, in consideration of the foregoing premises and
for other good and valuable consideration, the parties hereby agree as follows:

               1. DEFINITIONS

               As used in this Agreement, the following terms have the
respective meaning set forth below:

               Commission: shall mean the Securities and Exchange Commission or
any other federal agency at the time administering the Securities Act;

               Exchange Act: shall mean the Securities Exchange Act of 1934, as
amended;

               Holder: shall mean any holder of Registrable Securities;

               Initiating Holder: shall mean any Holder or Holders who in the
aggregate are Holders of more than 50% of the then outstanding Registrable
Securities;


<PAGE>B-2


               Person: shall mean an individual, partnership, joint-stock
company, corporation, trust or unincorporated organization, and a government or
agency or political subdivision thereof; register, registered and registration:
shall mean to a registration effected by preparing and filing a registration
statement in compliance with the Securities Act (and any post-effective
amendments filed or required to be filed) and the declaration or ordering of
effectiveness of such registration statement;

               register, registered and registration:  shall mean to a
registration effected by preparing and filing a registration statement in
compliance with the Securities Act (and any post-effective amendments filed or
required to be filed) and the declaration or ordering of effectiveness of such
registration statement;

               Registrable Securities: shall mean (A) shares of Common Stock
issued or issuable under the Agreement, (B) any additional shares of Common
Stock acquired by the Investors pursuant to the Warrants and (C) any stock of
the Company issued as a dividend or other distribution with respect to, or in
exchange for or in replacement of, the shares of Common Stock referred to in
clause (A) or (B);

               Registration Expenses: shall mean all expenses incurred by the
Company in compliance with Sections 2(a) and (b) hereof, including, without
limitation, all registration and filing fees, printing expenses, fees and
disbursements of counsel for the Company, fees and expenses of one counsel for
all the Holders, blue sky fees and expenses and the expense of any special
audits incident to or required by any such registration (but excluding the
compensation of regular employees of the Company, which shall be paid in any
event by the Company);

               Security, Securities: shall have the meaning set forth in Section
2(1) of the Securities Act;

               Securities Act: shall mean the Securities Act of 1933, as
amended; and

               Selling Expenses: shall mean all underwriting discounts and
selling commissions applicable to the sale of Registrable Securities.

               2. REGISTRATION RIGHTS

               (a) Requested Registration.

               (i) Request for Registration. If the Company shall receive from
          an Initiating Holder, at any time following the time that the shelf
          registration statements filed by the Company pursuant to Section 1.6
          under the Agreement (a "Shelf Registration Statement") are no longer
          in effect with respect to all of the Registrable Securities, a written
          request that the Company effect any registration covering the
          registration of 20% or more of the Registrable Securities (or such
          lesser percent which (I) the Company then owns or (II) results in an
          anticipated aggregate offering price of $1,000,000 or more), the
          Company will:



                                       2
<PAGE>B-3


                    (A) promptly give written notice of the proposed
               registration, qualification or compliance to all other Holders;
               and

                    (B) as soon as practicable, use its diligent best efforts to
               effect such registration (including, without limitation, the
               execution of an undertaking to file post-effective amendments,
               appropriate qualification under applicable blue sky or other
               state securities laws and appropriate compliance with applicable
               regulations issued under the Securities Act) as may be so
               requested and as would permit or facilitate the sale and
               distribution of all or such portion of such Registrable
               Securities as are specified in such request, together with all or
               such portion of the Registrable Securities of any Holder or
               Holders joining in such request as are specified in a written
               request received by the Company within 10 business days after
               written notice from the Company is given under Section 2(a)(i)(A)
               above; provided that the Company shall not be obligated to
               effect, or take any action to effect, any such registration
               pursuant to this Section 2(a):

                         (x) In any particular jurisdiction in which the Company
                    would be required to execute a general consent to service of
                    process in effecting such registration, qualification or
                    compliance, unless the Company is already subject to service
                    in such jurisdiction and except as may be required by the
                    Securities Act or applicable rules or regulations
                    thereunder; or

                         (y) After the Company has effected three (3) such
                    registrations pursuant to this Section 2(a) and such
                    registrations have been declared or ordered effective and
                    the Company has satisfied its obligations under Section 2(d)
                    hereof.

               The registration statement filed pursuant to the request of the
Initiating Holders may not include other securities of the Company which are
held by Persons other than the Holders ("Other Stockholders"), without the prior
consent of Holders registering at least 50% of the Registrable Securities.

               (ii) Underwriting. If the Initiating Holder intends to distribute
          the Registrable Securities covered by its request by means of an
          underwriting, it shall so advise the Company as a part of its request
          made pursuant to this Section 2(a), and the Company shall include such
          information in the written notice referred to in Section 2(a)(i)(A).
          In such event, the right of any Holder to include its Registrable
          Securities in such registration shall be conditioned upon such
          Holder's participation in such underwriting and the inclusion of such
          Holder's Registrable Securities in the underwriting to the extent
          provided


                                       3
<PAGE>B-4

          herein. All Holders proposing to distribute their securities
          through such underwriting shall enter into an underwriting agreement
          in customary form with the underwriter or underwriters selected for
          such underwriting by a majority in interest of the Initiating Holder.

               (iii) Company's Right to Defer. Notwithstanding the foregoing, if
          the Company shall furnish to the Initiating Holder a certificate
          signed by the President of the Company stating that, in the good faith
          judgment of the Board of Directors of the Company, it would be
          seriously detrimental to the Company and its shareholders for such
          registration statement to be filed in the near future and it is
          therefore essential to defer the filing of such registration
          statement, the Company shall have the right to defer such filing for a
          period of not more than 30 calendar days after receipt of the request
          of the Initiating Holder (a "Suspension Period"); provided that no
          Suspension Period may commence less than ninety (90) days after the
          expiration of the then most recent Suspension Period, and the Company
          may establish no more than two (2) Suspension Periods in any twelve
          (12) consecutive months.

               (iv) Transfer of Rights. The registration rights set forth in
          this Section 2 may be transferred or assigned to a transferee or
          assignee of any Registrable Securities not sold to the public
          acquiring at least 10,000 shares of Registrable Securities, equitably
          adjusted for any recapitalization, stock split, combination and the
          like (hereinafter referred to in this Section 2 as the "Transferee");
          provided, however, that:

                    (A) the Company must receive written notice prior to the
               time of said transfer, stating the name and address of the
               Transferee and identifying the securities with respect to which
               such registration rights are being transferred or assigned, and

                    (B) the Transferee must not be a person deemed by the Board
               of Directors of the Company, in good faith, to be a competitor or
               potential competitor of the Company.

               Notwithstanding the limitation set forth in the foregoing
          sentence respecting the minimum number of shares which must be
          transferred, any Holder which is a partnership or limited liability
          company may transfer such Holder's registration rights to such
          Holder's constituent partners or members without restriction as to the
          number or percentage of shares acquired by any such constituent
          partner or member.

               (b) Company Registration.

               (i) If the Company shall determine to register any of its equity
          securities either for its own account or


                                       4
<PAGE>B-5

          for the account of Other Stockholders, other than a registration
          relating solely to employee benefit plans, or a registration relating
          solely to a Commission Rule 145 transaction, or a registration on any
          registration form which does not permit secondary sales or does not
          include substantially the same information as would be required to be
          included in a registration statement covering the sale of Registrable
          Securities, the Company will:

                    (A) promptly give to each of the Holders a written notice
               thereof (which shall include a list of the jurisdictions in which
               the Company intends to attempt to qualify such securities under
               the applicable blue sky or other state securities laws); and

                    (B) include in such registration (and any related
               qualification under blue sky laws or other compliance), and in
               any underwriting involved therein, all the Registrable Securities
               specified in a written request or requests, made by the Holders
               within fifteen (15) days after receipt of the written notice from
               the Company described in clause (i) above, except as set forth in
               Section 2(b)(ii) below. Such written request may specify all or a
               part of the Holders' Registrable Securities.

               (ii) Underwriting. If the registration of which the Company gives
          notice is for a registered public offering involving an underwriting,
          the Company shall so advise each of the Holders as a part of the
          written notice given pursuant to Section 2(b)(i)(A). In such event,
          the right of each of the Holders to registration pursuant to this
          Section 2(b) shall be conditioned upon such Holders' participation in
          such underwriting and the inclusion of such Holders' Registrable
          Securities in the underwriting to the extent provided herein. The
          Holders whose shares are to be included in such registration shall
          (together with the Company and the Other Stockholders distributing
          their securities through such underwriting) enter into an underwriting
          agreement in customary form with the representative of the underwriter
          or underwriters selected for underwriting by the Company.
          Notwithstanding any other provision of this Section 2(b), if the
          representative determines that marketing factors require a limitation
          on the number of shares to be underwritten, the representative may
          (subject to the allocation priority set forth below) limit the number
          of Registrable Securities to be included in the registration and
          underwriting to not less than twenty five percent (25%) (or ten
          percent (10%) with respect to the first registered offering effected
          by the Company after the date hereof) of the shares included therein
          (based on the number of shares). The Company shall so advise all
          holders of securities requesting registration, and the number of
          shares of securities that are entitled to be included in the
          registration and underwriting shall be allocated in the following
          manner: The securities of the Company held by officers, directors and
          Other Stockholders of the Company


                                       5
<PAGE>B-6

          (other than Registrable Securities and other than securities held by
          holders who by contractual right demanded such registration
          ("Demanding Holders")) shall be excluded from such registration and
          underwriting to the extent required by such limitation, and, if a
          limitation on the number of shares is still required, the number of
          shares that may be included in the registration and underwriting by
          each of the Holders and Demanding Holders shall be reduced, on a pro
          rata basis (based on the number of shares held by such Holder), by
          such minimum number of shares as is necessary to comply with such
          limitation. If any of the Holders or any officer, director or Other
          Stockholder disapproves of the terms of any such underwriting, he may
          elect to withdraw therefrom by written notice to the Company and the
          underwriter. Any Registrable Securities or other securities excluded
          or withdrawn from such underwriting shall be withdrawn from such
          registration.

               (c) Expenses of Registration. All Registration Expenses incurred
in connection with any registration, qualification or compliance pursuant to
this Section 2 shall be borne by the Company, and all Selling Expenses shall be
borne by the Holders of the securities so registered pro rata on the basis of
the number of their shares so registered; provided, however, that if, as a
result of the withdrawal of a request for registration by any of the Holders, as
applicable, the registration statement does not become effective, the Holders
and Other Stockholders requesting registration may elect to bear the
Registration Expenses (pro rata on the basis of the number of their shares so
included in the registration request, or on such other basis as such Holders and
Other Stockholders may agree), in which case such registration shall not be
counted as a registration pursuant to Section 2(a)(i)(B)(y).

               (d) Registration Procedures. In the case of each registration
effected by the Company pursuant to this Section 2, the Company will keep the
Holders, as applicable, advised in writing as to the initiation of each
registration and as to the completion thereof. At its expense, the Company will:

               (i) keep such registration effective for a period of one hundred
          twenty (120) days or until the Holders, as applicable, have completed
          the distribution described in the registration statement relating
          thereto, whichever first occurs; provided, however, that such 120-day
          period shall be extended for a period of time equal to the period
          during which the Holders, as applicable, refrain from selling any
          securities included in such registration during a Suspension Period in
          accordance with provisions in Section 1.6(b)(iv) of the Agreement; and

              (ii) furnish such number of prospectuses and other documents
          incident thereto as each of the Holders, as applicable, from time to
          time may reasonably request.

               (e) Indemnification.



                                       6
<PAGE>B-7

               (i) The Company will indemnify each of the Holders, as
          applicable, each of its officers, directors and partners, and each
          person controlling each of the Holders, with respect to each
          registration which has been effected pursuant to this Section 2 or
          pursuant to Section 1.6 of the Agreement, and each underwriter, if
          any, and each person who controls any underwriter, against all claims,
          losses, damages and liabilities (or actions in respect thereof)
          arising out of or based on any untrue statement (or alleged untrue
          statement) of a material fact contained in any prospectus, offering
          circular or other document (including any related registration
          statement, notification or the like) incident to any such
          registration, qualification or compliance, or based on any omission
          (or alleged omission) to state therein a material fact required to be
          stated therein or necessary to make the statements therein not
          misleading, or any violation by the Company of the Securities Act or
          the Exchange Act or any rule or regulation thereunder applicable to
          the Company and relating to action or inaction required of the Company
          in connection with any such registration, qualification or compliance,
          and will reimburse each of the Holders, each of its officers,
          directors and partners, and each person controlling each of the
          Holders, each such underwriter and each person who controls any such
          underwriter, for any legal and any other expenses reasonably incurred
          in connection with investigating and defending any such claim, loss,
          damage, liability or action, provided that the Company will not be
          liable in any such case to the extent that any such claim, loss,
          damage, liability or expense arises out of or is based on any untrue
          statement or omission based upon written information furnished to the
          Company by the Holders or underwriter and stated to be specifically
          for use therein.

               (ii) Each of the Holders will, if Registrable Securities held by
          it are included in the securities as to which such registration,
          qualification or compliance is being effected, indemnify the Company,
          each of its directors and officers and each underwriter, if any, of
          the Company's securities covered by such a registration statement,
          each person who controls the Company or such underwriter, each Other
          Stockholder and each of their officers, directors, and partners, and
          each person controlling such Other Stockholder against all claims,
          losses, damages and liabilities (or actions in respect thereof)
          arising out of or based on any untrue statement (or alleged untrue
          statement) of a material fact contained in any such registration
          statement, prospectus, offering circular or other document made by
          such Holder, or any omission (or alleged omission) to state therein a
          material fact required to be stated therein or necessary to make the
          statements by such Holder therein not misleading, and will reimburse
          the Company and such Other Stockholders, directors, officers,
          partners, persons, underwriters or control persons for any legal or
          any other expenses reasonably incurred in connection with

                                       7
<PAGE>B-8

          investigating or defending any such claim, loss, damage, liability or
          action, in each case to the extent, but only to the extent, that such
          untrue statement (or alleged untrue statement) or omission (or alleged
          omission) is made in such registration statement, prospectus, offering
          circular or other document in reliance upon and in conformity with
          written information furnished to the Company by such Holder and stated
          to be specifically for use therein; provided, however, that the
          obligations of each of the Holders hereunder shall be limited to an
          amount equal to the net proceeds to such Holder of securities sold as
          contemplated herein.

               (iii) Each party entitled to indemnification under this Section
          2(e) (the "Indemnified Party") shall give notice to the party required
          to provide indemnification (the "Indemnifying Party") promptly after
          such Indemnified Party has actual knowledge of any claim as to which
          indemnity may be sought, and shall permit the Indemnifying Party to
          assume the defense of any such claim or any litigation resulting
          therefrom; provided that counsel for the Indemnifying Party, who shall
          conduct the defense of such claim or any litigation resulting
          therefrom, shall be approved by the Indemnified Party (whose approval
          shall not unreasonably be withheld) and the Indemnified Party may
          participate in such defense at such party's expense (unless the
          Indemnified Party shall have reasonably concluded that there may be a
          conflict of interest between the Indemnifying Party and the
          Indemnified Party in such action, in which case the fees and expenses
          of counsel shall be at the expense of the Indemnifying Party), and
          provided further that the failure of any Indemnified Party to give
          notice as provided herein shall not relieve the Indemnifying Party of
          its obligations under this Section 2 unless the Indemnifying Party is
          materially prejudiced thereby. No Indemnifying Party, in the defense
          of any such claim or litigation shall, except with the consent of each
          Indemnified Party, consent to entry of any judgment or enter into any
          settlement which does not include as an unconditional term thereof the
          giving by the claimant or plaintiff to such Indemnified Party of a
          release from all liability in respect to such claim or litigation.
          Each Indemnified Party shall furnish such information regarding itself
          or the claim in question as an Indemnifying Party may reasonably
          request in writing and as shall be reasonably required in connection
          with the defense of such claim and litigation resulting therefrom.

               (iv) If the indemnification provided for in this Section 2(e) is
          held by a court of competent jurisdiction to be unavailable to an
          Indemnified Party with respect to any loss, liability, claim, damage
          or expense referred to herein, then the Indemnifying Party, in lieu of
          indemnifying such Indemnified Party hereunder, shall contribute to the
          amount paid or payable by such Indemnified Party as a result of such
          loss, liability, claim, damage or expense in such proportion as is
          appropriate to reflect the relative fault


                                       8
<PAGE>B-9

          of the Indemnifying Party on the one hand and of the Indemnified Party
          on the other in connection with the statements or omissions which
          resulted in such loss, liability, claim, damage or expense, as well as
          any other relevant equitable considerations. The relative fault of the
          Indemnifying Party and of the Indemnified Party shall be determined by
          reference to, among other things, whether the untrue (or alleged
          untrue) statement of a material fact or the omission (or alleged
          omission) to state a material fact relates to information supplied by
          the Indemnifying Party or by the Indemnified Party and the parties'
          relative intent, knowledge, access to information and opportunity to
          correct or prevent such statement or omission.

               (v) Notwithstanding the foregoing, to the extent that the
          provisions on indemnification and contribution contained in the
          underwriting agreement entered into in connection with any
          underwritten public offering contemplated by this Agreement are in
          conflict with the foregoing provisions, the provisions in such
          underwriting agreement shall be controlling.

               (vi) The foregoing indemnity agreement of the Company and Holders
          is subject to the condition that, insofar as they relate to any loss,
          claim, liability or damage made in a preliminary prospectus but
          eliminated or remedied in the amended prospectus on file with the
          Commission at the time the registration statement in question becomes
          effective or the amended prospectus filed with the Commission pursuant
          to Commission Rule 424(b) (the "Final Prospectus"), such indemnity or
          contribution agreement shall not inure to the benefit of any
          underwriter or Holder if a copy of the Final Prospectus was furnished
          to the underwriter and was not furnished to the person asserting the
          loss, liability, claim or damage at or prior to the time such action
          is required by the Securities Act.

                 (f) Information by the Holders. It shall be a condition
precedent to the Company's obligation to file any registration statement
pursuant to this Registration Rights Agreement that each of the Holders
holding securities included in any registration shall furnish to the Company
such information regarding such Holder and the distribution proposed by such
Holder as the Company may reasonably request in writing and as shall be
reasonably required in connection with any registration, qualification or
compliance referred to in this Section 2 or Section 1.6 of the Agreement.

               (g) Rule 144 Reporting.

               With a view to making available the benefits of certain rules and
regulations of the Commission which may permit the sale of restricted securities
to the public without registration, the Company agrees to:



                                       9
<PAGE>B-10

               (i) make and keep public information available as those terms are
          understood and defined in Rule 144 under the Securities Act ("Rule
          144"), at all times from and after ninety (90) days following the
          effective date of the first registration under the Securities Act
          filed by the Company for an offering of its securities to the general
          public;

               (ii) use its best efforts to file with the Commission in a timely
          manner all reports and other documents required of the Company under
          the Securities Act and the Exchange Act at any time after it has
          become subject to such reporting requirements; and

               (iii) so long as the Holder owns any Registrable Securities,
          furnish to the Holder upon request, a written statement by the Company
          as to its compliance with the reporting requirements of Rule 144 (at
          any time from and after ninety (90) days following the effective date
          of the first registration statement filed by the Company for an
          offering of its securities to the general public), and of the
          Securities Act and the Exchange Act (at any time after it has become
          subject to such reporting requirements), a copy of the most recent
          annual or quarterly report of the Company, and such other reports and
          documents so filed as the Holder may reasonably request in availing
          itself of any rule or regulation of the Commission allowing the Holder
          to sell any such securities without registration.

               (h) Termination. The registration rights set forth in this
Section 2 shall not be available to any Holder if, in the opinion of counsel to
the Company, all of the Registrable Securities then owned by such Holder could
be sold in any 90-day period pursuant to Rule 144.

               3. INTERPRETATION OF THIS AGREEMENT

               (a) Directly or Indirectly. Where any provision in this Agreement
refers to action to be taken by any Person, or which such Person is prohibited
from taking, such provision shall be applicable whether such action is taken
directly or indirectly by such Person.

               (b) Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware applicable to
contracts made and to be performed entirely within such State.

               (c) Section Headings. The headings of the sections and
subsections of this Agreement are inserted for convenience only and shall not be
deemed to constitute a part thereof.

               4. MISCELLANEOUS

               (a) Notices.



                                       10
<PAGE>B-11

               (i) All communications under this Agreement shall be in writing
          and shall be delivered by hand or mailed by overnight courier or by
          registered or certified mail, postage prepaid:

                    (A) if to the Company, at the address set forth in the
               Agreement, or at such other address as it may have furnished in
               writing to the Investors;

                    (B) if to the Investors, at the address set forth in the
               Agreement or at such other address as may have been furnished to
               the Company in writing.

               (ii) Any notice so addressed shall be deemed to be given: if
          delivered by hand, on the date of such delivery; if mailed by courier,
          on the first business day following the date of such mailing; and if
          mailed by registered or certified mail, on the third business day
          after the date of such mailing.

               (b) Reproduction of Documents. This Agreement and all documents
relating thereto, including, without limitation, any consents, waivers and
modifications which may hereafter be executed may be reproduced by the Investor
by any photographic, photostatic, microfilm, microcard, miniature photographic
or other similar process and the Investors may destroy any original document so
reproduced. The parties hereto agree and stipulate that any such reproduction
shall be admissible in evidence as the original itself in any judicial or
administrative proceeding (whether or not the original is in existence and
whether or not such reproduction was made by the Investors in the regular course
of business) and that any enlargement, facsimile or further reproduction of such
reproduction shall likewise be admissible in evidence.

               (c) Successors and Assigns. This Agreement shall inure to the
benefit of and be binding upon the successors and assigns of each of the
parties.

               (d) Entire Agreement; Amendment and Waiver. This Agreement, the
Investment Agreement and the Warrants constitute the entire understanding of the
parties hereto and supersedes all prior understanding among such parties with
respect to the subject matter hereof. This Agreement may be amended, and the
observance of any term of this Agreement may be waived, with (and only with) the
written consent of the Company and the Investors holding a majority of the then
outstanding Registrable Securities.

               (e) Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original and all of which
together shall be considered one and the same agreement.


                                       11
<PAGE>B-12


               IN WITNESS WHEREOF, the undersigned have executed this Agreement
as of the date first set forth above.

                                     AMATI COMMUNICATIONS CORPORATION


                                     By:_________________________
                                        Name:
                                        Title:


                                     INVESTORS:
                                     QUANTUM INDUSTRIAL PARTNERS LDC


                                     By:_________________________
                                        Name:
                                        Title:



                                     S-C PHOENIX HOLDINGS, L.L.C.

                                     By:_________________________
                                        Name:
                                        Title:


                                     WINSTON PARTNERS, L.P.

                                     By: Chatterjee Fund Management,
                                         its general partner

                                         By:_________________________
                                            Name:
                                            Title:


                                    WINSTON PARTNERS II LDC

                                     By:_________________________
                                        Name:
                                        Title:


                                    WINSTON PARTNERS II L.L.C.


                                    By: Chatterjee Fund Management,
                                         its general partner

                                         By:_________________________
                                            Name:
                                            Title:


                                       12



<PAGE> C-1

                                                                       EXHIBIT C

                             OFFICER'S CERTIFICATE

      [NAME], the [OFFICE] and Chief Executive Officer of Amati Communications
Corporation (the "Company"), and [NAME), the [OFFICE) and Chief Financial
officer of the Company, do hereby certify that:

      1.  The representations and warranties of the Company contained in the
Investment Agreement dated __________, 1996, between the Company and the
Investors named therein (the "Agreement"), are true and correct in all material
respects, as if made at and as of the date hereof (except for representations
and warranties that speak as of a particular date or refer to a particular point
in time and except for the representation and warranty contained in Section
2.1(i) of the Agreement). The Company has complied with all the agreements, has
performed all the obligations and has satisfied all the conditions on its part
to be complied with, performed or satisfied at or prior to the date of this
Certificate specified in the Agreement. Capitalized terms used herein and not
otherwise defined herein shall have the meanings ascribed thereto in the
Agreement.

      2.  The Registration Statement on Form S-3 (SEC No. _______________) (the
"Registration Statement") filed by the Company with the Securities and Exchange
Commission (the "Commission") has become and is currently effective, and to the
best knowledge of the respective signers, no stop order suspending the
effectiveness of the Registration Statement has been issued and no proceeding
for that purpose has been initiated or is threatened by the Commission.

      3.  All filings, if any, required by Rule 424(b) and Rule 415 of the
Securities Act of 1933, as amended, have been made.

      4.  The respective signers have each carefully examined the Registration
Statement and the prospectus contained therein (the "Prospectus"), and any
amendments or supplements thereto, and to the best of their knowledge the
Registration Statement and the Prospectus, and any amendments or supplements
thereto, contain all statements and information required to be included therein,
and all statements contained therein are true and correct, and neither the
Registration Statement nor Prospectus, nor any amendment or supplements thereto,
includes any untrue statement of a material fact or omits to state any material
fact required to be stated therein or necessary to make the statements therein
not misleading (in the case of the Prospectus, in light of the circumstances
under which they were made) and, since the effective date of the Registration
Statement, there has occurred no event required to be set forth in an amendment
or supplemental Registration Statement or Prospectus which has not been so set
forth.


<PAGE> C-2


      IN WITNESS WHEREOF, the undersigned have executed this certificate on the
____ day of ________, 19 __, which is a Closing Date, as such term is defined in
the Agreement.



                                        ______________________________
                                        Print Name:
                                        Print Title:



                                        ______________________________
                                        Print Name:
                                        Print Title:




<PAGE>

Exhibit D



                            FORM OF CLASS A WARRANT

    THIS WARRANT AND THE SECURITIES ISSUABLE UPON ITS EXERCISE HAVE NOT BEEN
  REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR ANY
     STATE SECURITIES LAW, AND MAY NOT BE TRANSFERRED EXCEPT PURSUANT TO AN
 EFFECTIVE REGISTRATION UNDER THE ACT OR IN A TRANSACTION WHICH, IN THE OPINION
    OF COUNSEL REASONABLY SATISFACTORY TO AMATI COMMUNICATIONS CORPORATION,
       QUALIFIES AS AN EXEMPT TRANSACTION UNDER THE ACT AND THE RULES AND
                      REGULATIONS PROMULGATED THEREUNDER.


                        AMATI COMMUNICATIONS CORPORATION

                         Common Stock Purchase Warrant


           AMATI COMMUNICATIONS CORPORATION, Delaware corporation (the
"Company"), hereby certifies that, for value received, [Chatterjee Entity] (the
"Holder"), or assigns, is entitled, subject to the terms set forth below, to
purchase from the Company, at any time and from time to time during the period
beginning on the seventy-fifth day following the date hereof and ending on the
fifth anniversary of such date in whole or in part, an aggregate of THREE
HUNDRED THOUSAND (300,000) fully paid and non-assessable shares of the Common
Stock of the Company at a purchase price, subject to the provisions of Paragraph
3 hereof, equal to the Average Share Price in respect of the First Tranche plus
20% (the "Purchase Price"). The Purchase Price and the number and character of
such shares are subject to adjustment as provided below, and the term "Common
Stock" shall mean, unless the context otherwise requires, the stock or other
securities or property at the time deliverable upon the exercise of this
Warrant. This Warrant is herein called the "Warrant." Capitalized terms used but
not defined herein shall have the meanings ascribed thereto in the Investment
Agreement, dated as of the date hereof, between the Company and the Holder (the
"Investment Agreement").

           1. EXERCISE OF WARRANT. The purchase rights evidenced by this Warrant
shall be exercised by the holder surrendering this Warrant, with the form of
subscription at the end hereof duly executed by such holder, to the Company at
its executive offices accompanied by payment of an amount (the "Exercise
Amount") equal to the Purchase Price multiplied by the number of shares being
purchased pursuant to such exercise,

<PAGE> 2




payable as follows: (a) by payment to the Company in cash, by certified or
official bank check, or by wire transfer of the Exercise Amount, (b) by
surrender to the Company for cancellation of securities of the Company,
including this Warrant having a Market Price (as hereinafter defined) on the
date of exercise equal to the Exercise Amount; or (c) by a combination of the
methods described in clauses (a) and (b) above. In lieu of exercising the
Warrant, the holder may elect to receive a payment equal to the difference
between (i) the Market Price multiplied by the number of shares as to which the
payment is then being elected and (ii) the exercise price with respect to such
shares, payable by the Company to the Holder only in shares of Common Stock
valued at the Market Price on the date of exercise. For purposes hereof, the
term "Market Price" shall mean the average closing price of a share of Common
Stock for the 15 consecutive Trading Days preceding such day on the Principal
Market or, if the shares of Common Stock or securities are not publicly traded,
the Market Price for such day shall be the fair market value thereof determined
jointly by the Company and the holder of this Warrant; provided, however, that
if such parties are unable to reach agreement within a reasonable period of
time, the Market Price shall be determined in good faith by the independent
investment banking firm selected jointly by the Company and the holder of this
Warrant or, if that selection cannot be made within 15 days, by an independent
investment banking firm selected by the American Arbitration Association in
accordance with its rules.

           1.1 Partial Exercise. This Warrant may be exercised for less than the
full number of shares of Common Stock, in which case the number of shares
receivable upon the exercise of this Warrant as a whole, and the sum payable
upon the exercise of this Warrant as a whole, shall be proportionately reduced.
Upon any such partial exercise, the Company at its expense will forthwith issue
to the holder hereof a new Warrant or Warrants of like tenor calling for the
number of shares of Common Stock as to which rights have not been exercised,
such Warrant or Warrants to be issued in the name of the holder hereof or his
nominee (upon payment by such holder of any applicable transfer taxes).

           2. DELIVERY OF STOCK CERTIFICATES ON EXERCISE. As soon as practicable
after the exercise of this Warrant and payment of the Purchase Price, and in any
event within ten (10) days thereafter, the Company, at its expense, will cause
to be issued in the name of and delivered to the holder hereof a certificate or
certificates for the number of fully paid and non-assessable shares or other
securities or property to which such holder shall be entitled upon such
exercise, plus, in lieu of any fractional share to which such holder would
otherwise be entitled, cash in an amount determined in accordance with Paragraph
3.9 hereof. The Company agrees that the shares so purchased shall be deemed to
be issued to the holder hereof as the record owner of such shares as of the
close of business on

<PAGE> 3


the date on which this Warrant shall have been surrendered and
payment made for such shares as aforesaid.

           3.  ANTI-DILUTION PROVISIONS AND OTHER ADJUSTMENTS. In order to
prevent dilution of the right granted hereunder, the Purchase Price shall be
subject to adjustment from time to time in accordance with this Paragraph 3.
Upon each adjustment of the Purchase Price pursuant to this Paragraph 3, the
registered Holder of this Warrant shall thereafter be entitled to acquire upon
exercise, at the Purchase Price resulting from such adjustment, the number of
shares of the Company's Common Stock obtainable by multiplying the Purchase
Price in effect immediately prior to such adjustment by the number of shares of
the Company's Common Stock acquirable immediately prior to such adjustment and
dividing the product thereof by the Purchase Price resulting from such
adjustment.

           3.1  Adjustment for Issue or Sale of Common Stock at Less than
Purchase Price. Except as provided in Paragraph 3.2 or 3.5 below, if and
whenever on or after the date of issuance hereof the Company shall issue or
sell, or shall in accordance with subparagraphs 3.1(1) to (9), inclusive, be
deemed to have issued or sold, any shares of its Common Stock for a
consideration per share less than the Purchase Price in effect immediately prior
to the time of such issue or sale, then forthwith upon such issue or sale (the
"Triggering Transaction"), the Purchase Price shall, subject to subparagraphs
(1) to (9) of this Paragraph 3.1, be reduced to the Purchase Price (calculated
to the nearest tenth of a cent) determined by dividing:

               (i)  an amount equal to the sum of (x) the product derived by
     multiplying the Number of Common Shares Deemed Outstanding immediately
     prior to such Triggering Transaction by the Purchase Price then in effect,
     plus (y) the consideration, if any, received by the Company upon
     consummation of such Triggering Transaction, by

               (ii)  an amount equal to the sum of (x) the Number of Common
     Shares Deemed Outstanding immediately prior to such Triggering Transaction
     plus (y) the number of shares of Common Stock issued (or deemed to be
     issued in accordance with subparagraphs 3.1(1) to (9)) in connection with
     the Triggering Transaction.

           For purposes of this Paragraph 3, the term "Number of Common Shares
Deemed Outstanding" at any given time shall mean the sum of (i) the number of
shares of the Company's Common Stock outstanding at such time, and (ii) the
number of shares of the Company's Common Stock deemed to be outstanding under
subparagraphs 3.1(1) to (9), inclusive, at such time.

           For purposes of determining the adjusted Purchase Price under this
Paragraph 3.1, the following subsections (1) to (9), inclusive, shall be
applicable:


<PAGE> 4

               (1)  In case the Company at any time shall in any manner grant
          (whether directly or by assumption in a merger or otherwise) any
          rights to subscribe for or to purchase, or any options for the
          purchase of, Common Stock or any stock or other securities convertible
          into or exchangeable for Common Stock (such rights or options being
          herein called "Options" and such convertible or exchangeable stock or
          securities being herein called "Convertible Securities"), whether or
          not such Options or the right to convert or exchange any such
          Convertible Securities are immediately exercisable and the price per
          share for which the Common Stock is issuable upon exercise, conversion
          or exchange (determined by dividing (x) the total amount, if any,
          received or receivable by the Company as consideration for the
          granting of such Options, plus the minimum aggregate amount of
          additional consideration payable to the Company upon the exercise of
          all such Options, plus, in the case of such Options which relate to
          Convertible Securities, the minimum aggregate amount of additional
          consideration, if any, payable upon the issue or sale of such
          Convertible Securities and upon the conversion or exchange thereof, by
          (y) the total maximum number of shares of Common Stock issuable upon
          the exercise of such Options or the conversion or exchange of such
          Convertible Securities) shall be less than the Purchase Price in
          effect immediately prior to the time of the granting of such Option,"
          then the total maximum amount of Common Stock issuable upon the
          exercise of such Options, or, in the case of Options for Convertible
          Securities, upon the conversion or exchange of such Convertible
          Securities, shall (as of the date of granting of such Options) be
          deemed to be outstanding and to have been issued and sold by the
          Company for such price per share. No adjustment of the Purchase Price
          shall be made upon the actual issue of such shares of Common Stock or
          such Convertible Securities upon the exercise of such Options, except
          as otherwise provided in subparagraph (3) below.

               (2)  In case the Company at any time shall in any manner issue
          (whether directly or by assumption in a merger or otherwise) or sell
          any Convertible Securities, whether or not the rights to exchange or
          convert thereunder are immediately exercisable, and the price per
          share for which Common Stock is issuable upon such conversion or
          exchange (determined by dividing (x) the total amount received or
          receivable by the Company as consideration for the issue or sale of
          such Convertible Securities, plus the minimum aggregate amount of
          additional consideration, if any, payable to the Company upon the
          conversion or exchange thereof, by (y) the total maximum number of
          shares of Common Stock

<PAGE> 5

          issuable upon the conversion or exchange of all such Convertible
          Securities) shall be less than the Purchase Price in effect
          immediately prior to the time of such issue or sale, then the total
          maximum number of shares of Common Stock issuable upon conversion or
          exchange of all such Convertible Securities shall (as of the date of
          the issue or sale of such Convertible Securities) be deemed to be
          outstanding and to have been issued and sold by the Company for such
          price per share. No adjustment of the Purchase Price shall be made
          upon the actual issue of such Common Stock upon exercise of the rights
          to exchange or convert under such Convertible Securities, except as
          otherwise provided in subparagraph (3) below.

               (3) If the purchase price provided for in any Options referred to
          in subparagraph (1), the additional consideration, if any, payable
          upon the conversion or exchange of any Convertible Securities referred
          to in subparagraphs (1) or (2), or the rate at which any Convertible
          Securities referred to in subparagraph (1) or (2) are convertible into
          or exchangeable for Common Stock shall change at any time (other than
          under or by reason of provisions designed to protect against dilution
          of the type set forth in Paragraph 3.1 or 3.3), the Purchase Price in
          effect at the time of such change shall forthwith be readjusted to the
          Purchase Price which would have been in effect at such time had such
          Options or Convertible Securities still outstanding provided for such
          changed purchase price, additional consideration or conversion rate,
          as the case may be, at the time initially granted, issued or sold. If
          the purchase price provided for in any Option referred to in
          subparagraph (1) or the rate at which any Convertible Securities
          referred to in subparagraphs (1) or (2) are convertible into or
          exchangeable for Common Stock, shall be reduced at any time under or
          by reason of provisions with respect thereto designed to protect
          against dilution, then in case of the delivery of Common Stock upon
          the exercise of any such Option or upon conversion or exchange of any
          such Convertible Security, the Purchase Price then in effect hereunder
          shall forthwith be adjusted to such respective amount as would have
          been obtained had such Option or Convertible Security never been
          issued as to such Common Stock and had adjustments been made upon the
          issuance of the shares of Common Stock delivered as aforesaid, but
          only if as a result of such adjustment the Purchase Price then in
          effect hereunder is hereby reduced.

               (4)  On the expiration of any Option or the termination of any
          right to convert or exchange any Convertible Securities, the Purchase
          Price then in

<PAGE> 6

          effect hereunder shall forthwith be increased to the Purchase Price
          which would have been in effect at the time of such expiration or
          termination had such Option or Convertible Securities, to the extent
          outstanding immediately prior to such expiration or termination, never
          been issued.

               (5) In case any Options shall be issued in connection with the
          issue or sale of other securities of the Company, together comprising
          one integral transaction in which no specific consideration is
          allocated to such Options by the parties thereto, such Options shall
          be deemed to have been issued without consideration.

               (6) In case any shares of Common Stock, Options or Convertible
          Securities shall be issued or sold or deemed to have been issued or
          sold for cash, the consideration received therefor shall be deemed to
          be the amount received by the Company therefor. In case any shares of
          Common Stock, Options or Convertible Securities shall be issued or
          sold for a consideration other than cash, the amount of the
          consideration other than cash received by the Company shall be the
          fair value of such consideration as determined in good faith by the
          Board of Directors of the Company. In case any shares of Common Stock,
          Options or Convertible Securities shall be issued in connection with
          any merger in which the Company is the surviving corporation, the
          amount of consideration therefor shall be deemed to be the fair value
          of such portion of the net assets and business of the non-surviving
          corporation as shall be attributed by the Board of Directors of the
          Company in good faith to such Common Stock, Options or Convertible
          Securities, as the case may be.

               (7) The number of shares of Common Stock outstanding at any given
          time shall not include shares owned or held by or for the account of
          the Company, and the disposition of any shares so owned or held shall
          be considered an issue or sale of Common Stock for the purpose of this
          Paragraph 3.1.

               (8) In case the Company shall declare a dividend or make any
          other distribution upon the stock of the Company payable in Options or
          Convertible Securities, then in such case any Options or Convertible
          Securities, as the case may be, issuable in payment of such dividend
          or distribution shall be deemed to have been issued or sold without
          consideration.

               (9) For purposes of this Paragraph 3.1, in case the Company shall
          take a record of the holders of its

<PAGE> 7

          Common Stock for the purpose of entitling them (x) to receive a
          dividend or other distribution payable in Common Stock, Options or in
          Convertible Securities, or (y) to subscribe for or purchase Common
          Stock, Options or Convertible Securities, then such record date shall
          be deemed to be the date of the issue or sale of the shares of Common
          Stock deemed to have been issued or sold upon the declaration of such
          dividend or the making of such other distribution or the date of the
          granting of such right or subscription or purchase, as the case may
          be.

           3.2  Dividends Not Paid Out of Earnings or Earned Surplus. In the
event the Company shall declare a dividend upon the Common Stock (other than a
dividend payable in Common Stock) payable otherwise than out of earnings or
earned surplus, determined in accordance with generally accepted accounting
principles, including the making of appropriate deductions for minority
interests, if any, in subsidiaries (herein referred to as "Liquidating
Dividends"), then, as soon as possible after the exercise of this Warrant, the
Company shall pay to the person exercising such Warrant an amount equal to the
aggregate value at the time of such exercise of all Liquidating Dividends
(including but not limited to the Common Stock which would have been issued at
the time of such earlier exercise and all other securities which would have been
issued with respect to such Common Stock by reason of stock splits, stock
dividends, mergers or reorganizations, or for any other reason). For the
purposes of this Paragraph 3.2, a dividend other than in cash shall be
considered payable out of earnings or earned surplus only to the extent that
such earnings or earned surplus are charged an amount equal to the fair value of
such dividend as determined in good faith by the Board of Directors of the
Company.

           3.3  Subdivisions and Combinations.  In case the Corporation shall at
any time (i) subdivide the outstanding Common Stock or (ii) issue a stock
dividend on its outstanding Common Stock, the Purchase Price in effect
immediately prior to such subdivision or dividend shall be proportionately
reduced by the same ratio as the subdivison or dividend. In case the Corporation
shall at any time combine its outstanding Common Stock, Purchase Price in effect
immediately prior to such combination shall be proportionately increased by the
same ratio as the combination.

           3.4  Reorganization, Reclassification, Consolidation, Merger or Sale
of Assets.  If any capital reorganization or reclassification of the capital
stock of the Company, or consolidation or merger of the Company with another
corporation, or the sale of all or substantially all of its assets to another
corporation shall be effected in such a way that holders of Common Stock shall
be entitled to receive stock, securities, cash or other property with respect to
or in exchange for Common Stock, then, as a condition of such reorganization,
reclassification, consolidation, merger or sale, lawful and adequate provision
shall be made whereby the holder of this Warrant shall have the right to acquire
and receive upon exercise of this Warrant such shares of stock, securities, cash
or other property issuable or payable (as part of the reorganization,

<PAGE> 8

reclassification, consolidation, merger or sale) with respect to or in exchange
for such number of outstanding shares of the Company's Common Stock as would
have been received upon exercise of this Warrant at the Purchase Price then in
effect. The Company will not effect any such consolidation, merger or sale,
unless prior to the consummation thereof the successor corporation (if other
than the Company) resulting from such consolidation or merger or the corporation
purchasing such assets shall assume by written instrument mailed or delivered to
the holder of this Warrant at the last address of such holder appearing on the
books of the Company, the obligation to deliver to such holder such shares of
stock, securities or assets as, in accordance with the foregoing provisions,
such holder may be entitled to purchase. If a purchase, tender or exchange offer
is made to and accepted by the holders of more than 50% of the outstanding
shares of Common Stock of the Company, the Company shall not effect any
consolidation, merger or sale with the person having made such offer or with any
Affiliate of such person, unless prior to the consummation of such
consolidation, merger or sale the holder of this Warrant shall have been given a
reasonable opportunity to then elect to receive upon the exercise of this
Warrant either the stock, securities or assets then issuable with respect to the
Common Stock of the Company or the stock, securities or assets, or the
equivalent, issued to previous holders of the Common Stock in accordance with
such offer. For purposes hereof the term "Affiliate" with respect to any given
person shall mean any person controlling, controlled by or under common control
with the given person.

           3.5 No Adjustment for Exercise of Certain Options, Warrants, Etc. The
provisions of this Section 3 shall not apply to any Common Stock issued,
issuable or deemed outstanding under subparagraphs 3.1(1) to (9) inclusive: (i)
to any person pursuant to any stock option, stock purchase or similar plan or
arrangement for the benefit of employees, consultants or directors of the
Company or its subsidiaries in effect on the date of issuance hereof, (ii)
pursuant to options, warrants and conversion rights in existence on the date of
issuance hereof, (iii) pursuant to the Investment Agreement or (iv) pursuant to
a firm committment underwritten registered offering under the 1933 Act.

           3.6  Notices of Record Date, Etc.  In the event that:

               (1)  the Company shall declare any cash dividend upon its Common
          Stock, or

               (2)  the Company shall declare any dividend upon its Common Stock
          payable in stock or make any special

<PAGE> 9

          dividend or other distribution to the holders of its Common Stock, or

               (3)  the Company shall offer for subscription pro rata to the
          holders of its Common Stock any additional shares of stock of any
          class or other rights, or

               (4)  there shall be any capital reorganization or
          reclassification of the capital stock of the Company, including any
          subdivision or combination of its outstanding shares of Common
          Stock, or consolidation or merger of the Company with, or sale of
          all or substantially all of its assets to, another corporation, or

               (5)  there shall be a voluntary or involuntary dissolution,
          liquidation or winding up of the Company;

then, in connection with such event, the Company shall give to the holder of
this Warrant:

               (ii) at least twenty (20) days' prior written notice of the date
     on which the books of the Company shall close or a record shall be taken
     for such dividend, distribution or subscription rights or for determining
     rights to vote in respect of any such reorganization, reclassification,
     consolidation, merger, sale, dissolution, liquidation or winding up; and

               (iii) in the case of any such reorganization, reclassification,
     consolidation, merger, sale, dissolution, liquidation or winding up, at
     least twenty (20) days' prior written notice of the date when the same
     shall take place. Such notice in accordance with the foregoing clause (i)
     shall also specify, in the case of any such dividend, distribution or
     subscription rights, the date on which the holders of Common Stock shall be
     entitled thereto, and such notice in accordance with the foregoing clause
     (ii) shall also specify the date on which the holders of Common Stock shall
     be entitled to exchange their Common Stock for securities or other property
     deliverable upon such reorganization, reclassification consolidation,
     merger, sale, dissolution, liquidation or winding up, as the case may be.
     Each such written notice shall be given by first class mail, postage
     prepaid, addressed to the holder of this Warrant at the address of such
     holder as shown on the books of the Company.

           3.7  Grant, Issue or Sale of Options, Convertible Securities, or
Rights.  If at any time or from time to time on or after the date of issuance
hereof, the Company shall grant, issue or sell any Options, Convertible
Securities or rights to purchase property (the "Purchase Rights") pro rata to
the record holders of any class of Common Stock of the Company and such grants,

<PAGE> 10

issuances or sales do not result in an adjustment of the Purchase Price under
Paragraph 3.1 hereof, then the holder of this Warrant shall be entitled to
acquire (within thirty (30) days after the later to occur of the initial
exercise date of such Purchase Rights or receipt by such holder of the notice
concerning Purchase Rights to which such holder shall be entitled under
Paragraph 3.6) and upon the terms applicable to such Purchase Rights either:

               (i) the aggregate Purchase Rights which such holder could have
     acquired if it had held the number of shares of Common Stock acquirable
     upon exercise of this Warrant immediately before the grant, issuance or
     sale of such Purchase Rights; provided that if any Purchase Rights were
     distributed to holders of Common Stock without the payment of additional
     consideration by such holders, corresponding Purchase Rights shall be
     distributed to the exercising holder of this Warrant as soon as possible
     after such exercise and it shall not be necessary for the exercising holder
     of this Warrant specifically to request delivery of such rights; or

               (ii)  in the event that any such Purchase Rights shall have
     expired or shall expire prior to the end of said thirty (30) day period,
     the number of shares of Common Stock or the amount of property which such
     holder could have acquired upon such exercise at the time or times at which
     the Company granted, issued or sold such expired Purchase Rights.

           3.8  Adjustment by Board of Directors.  If any event occurs as to
which, in the opinion of the Board of Directors of the Company, the provisions
of this Section 3 are not strictly applicable or if strictly applicable would
not fairly protect the rights of the holder of this Warrant in accordance with
the essential intent and principles of such provisions, then the Board of
Directors shall make an adjustment in the application of such provisions, in
accordance with such essential intent and principles, so as to protect such
rights as aforesaid, but in no event shall any adjustment have the effect of
increasing the Purchase Price as otherwise determined pursuant to any of the
provisions of this Section 3 except in the case of a combination of shares of a
type contemplated in Paragraph 3.3 and then in no event to an amount larger than
the Purchase Price as adjusted pursuant to Paragraph 3.3.

           3.9  Fractional Shares.  The Company shall not issue fractions of
shares of Common Stock upon exercise of this Warrant or scrip in lieu thereof.
If any fraction of a share of Common Stock would, except for the provisions of
this Paragraph 3.9, be issuable upon exercise of this Warrant, the Company shall
in lieu thereof pay to the person entitled thereto an amount in cash equal to
the current value of such fraction, calculated to the nearest one-hundredth
(1/100) of a share, to be computed (i) if

<PAGE> 11

the Common Stock is listed on any national securities exchange on the basis of
the last sales price of the Common Stock on such exchange (or the quoted closing
bid price if there shall have been no sales) on the date of conversion, or (ii)
if the Common Stock shall not be listed, on the basis of the mean between the
closing bid and asked prices for the Common Stock on the date of conversion as
reported by NASDAQ, or its successor, and if there are not such closing bid and
asked prices, on the basis of the fair market value per share as determined by
the Board of Directors of the Company.

           3.10  Officers' Statement as to Adjustments.  Whenever the Purchase
Price shall be adjusted as provided in Section 3 hereof, the Company shall
forthwith file at each office designated for the exercise of this Warrant, a
statement, signed by the Chairman of the Board, the President, any Vice
President or Treasurer of the Company, showing in reasonable detail the facts
requiring such adjustment and the Purchase Price that will be effective after
such adjustment. The Company shall also cause a notice setting forth any such
adjustments to be sent by mail, first class, postage prepaid, to the record
holder of this Warrant at his or its address appearing on the stock register. If
such notice relates to an adjustment resulting from an event referred to in
Paragraph 3.6, such notice shall be included as part of the notice required to
be mailed and published under the provisions of Paragraph 3.6 hereof.

           4.  NO DILUTION OR IMPAIRMENT.  The Company will not, by amendment of
its charter or through reorganization, consolidation, merger, dissolution, sale
of assets or any other voluntary action, avoid or seek to avoid the observance
or performance of any of the terms of this Warrant, but will at all times in
good faith assist in the carrying out of all such terms and in the taking of all
such action as may be necessary or appropriate in order to protect the rights of
the holder hereof against dilution or other impairment. Without limiting the
generality of the foregoing, the Company will not increase the par value of any
shares of stock receivable upon the exercise of this Warrant above the amount
payable therefor upon such exercise, and at all times will take all such action
as may be necessary or appropriate in order that the Company may validly and
legally issue fully paid and non-assessable stock upon the exercise of this
Warrant.

           5. RESERVATION OF STOCK, ETC., ISSUABLE ON EXERCISE OF WARRANTS. The
Company shall at all times reserve and keep available out of its authorized but
unissued stock, solely for the issuance and delivery upon the exercise of this
Warrant and other similar Warrants, such number of its duly authorized shares of
Common Stock as from time to time shall be issuable upon the exercise of this
Warrant and all other similar Warrants at the time outstanding.


<PAGE> 12

           6.  REPLACEMENT OF WARRANT.  Upon receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and (in the case of loss, theft or destruction) upon delivery of an
indemnity agreement (with surety if reasonably required) in an amount reasonably
satisfactory to it, or (in the case of mutilation) upon surrender and
cancellation thereof, the Company will issue, in lieu thereof, a new Warrant of
like tenor.

           7.  REMEDIES.  The Company stipulates that the remedies at law of the
holder of this Warrant in the event of any default by the Company in the
performance of or compliance with any of the terms of this Warrant are not and
will not be adequate, and that the same may be specifically enforced.

           8.  NEGOTIABILITY, ETC.  This Warrant is issued upon the following
terms, to all of which each taker or owner hereof consents and agrees:

           (a) Subject to the legend appearing on the first page hereof, title
               to this Warrant may be transferred by endorsement (by the holder
               hereof executing the form of assignment at the end hereof
               including guaranty of signature) and delivery in the same manner
               as in the case of a negotiable instrument transferable by
               endorsement and delivery.

           (b) Any person in possession of this Warrant properly endorsed is
               authorized to represent himself as absolute owner hereof and is
               granted power to transfer absolute title hereto by endorsement
               and delivery hereof to a bona fide purchaser hereof for value;
               each prior taker or owner waives and renounces all of his
               equities or rights in this Warrant in favor of every such bona
               fide purchaser, and every such bona fide purchaser shall acquire
               title hereto and to all rights represented hereby.

           (c) Until this Warrant is transferred on the books of the Company,
               the Company may treat the registered holder of this Warrant as
               the absolute owner hereof for all purposes without being affected
               by any notice to the contrary.

           (d) Prior to the exercise of this Warrant, the holder hereof shall
               not be entitled to any rights of a shareholder of the Company
               with respect to shares for which this Warrant shall be
               exercisable, including, without limitation, the right to vote, to
               receive dividends or other distributions or to exercise any
               preemptive rights, and shall not be entitled to receive any
               notice of any proceedings of the Company, except as provided
               herein.


<PAGE> 13

           (e) The Company shall not be required to pay any Federal or state
               transfer tax or charge that may be payable in respect of any
               transfer involved in the transfer or delivery of this Warrant or
               the issuance or conversion or delivery of certificates for Common
               Stock in a name other than that of the registered holder of this
               Warrant or to issue or deliver any certificates for Common Stock
               upon the exercise of this Warrant until any and all such taxes
               and charges shall have been paid by the holder of this Warrant or
               until it has been established to the Company's satisfaction that
               no such tax or charge is due.

           9.  SUBDIVISION OF RIGHTS.  This Warrant (as well as any new warrants
issued pursuant to the provisions of this paragraph) is exchangeable, upon the
surrender hereof by the holder hereof, at the principal office of the Company
for any number of new warrants of like tenor and date representing in the
aggregate the right to subscribe for and purchase the number of shares of Common
Stock of the Company which may be subscribed for and purchased hereunder.

           10. MAILING OF NOTICES, ETC.  All notices and other communications
from the Company to the holder of this Warrant shall be mailed by first-class
certified mail, postage prepaid, to the address furnished to the Company in
writing by the last holder of this Warrant who shall have furnished an address
to the Company in writing.

           11. HEADINGS, ETC.  The headings in this Warrant are for purposes of
reference only, and shall not limit or otherwise affect the meaning hereof.

           12. CHANGE, WAIVER, ETC. Neither this Warrant nor any term hereof may
be changed, waived, discharged or terminated orally but only by an instrument in
writing signed by the party against which enforcement of the change, waiver,
discharge or termination is sought.


<PAGE> 14

           13. GOVERNING LAW.  THIS WARRANT SHALL BE CONSTRUED AND ENFORCED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE



                                        AMATI COMMUNICATIONS CORPORATION



                                        By______________________________


Dated:_____________ __, 199


Attest:


___________________________

<PAGE> 15




                  [To be signed only upon exercise of Warrant]



To AMATI COMMUNICATIONS CORPORATION

           The undersigned, the holder of the within Warrant, hereby irrevocably
elects to exercise the purchase right represented by such Warrant for, and to
purchase thereunder, ___________ shares of Common Stock of AMATI COMMUNICATIONS
CORPORATION and herewith makes payment of $_________ therefor, and requests that
the certificates for such shares be issued in the name of, and be delivered to
________________________, whose address is __________________________________.


Dated:



___________________________


                                        ___________________________

(Signature must conform in all respects to name of Holder as specified on the
face of the Warrant)



                                        ___________________________
                                                  Address

<PAGE> 16





                  [To be signed only upon transfer of Warrant]



     FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers
unto the right represented by the within Warrant to purchase the _________
shares of the Common Stock of AMATI COMMUNICATIONS CORPORATION to which the
within Warrant relates, and appoints________________________ attorney to
transfer said right on the books of AMATI COMMUNICATIONS CORPORATION with full
power of substitution in the premises.

Dated:


________________________________




(Signature must conform in all respects to name of Holder as specified on the
face of the Warrant)



                                                       _______________________
                                                              Address


In the presence of




_________________________






<PAGE>

Exhibit E




                            FORM OF CLASS B WARRANT

THIS WARRANT AND THE SECURITIES ISSUABLE UPON ITS EXERCISE HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR ANY
STATE SECURITIES LAW, AND MAY NOT BE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION UNDER THE ACT OR IN A TRANSACTION WHICH, IN THE OPINION OF COUNSEL
REASONABLY SATISFACTORY TO AMATI COMMUNICATIONS CORPORATION, QUALIFIES AS AN
EXEMPT TRANSACTION UNDER THE ACT AND THE RULES AND REGULATIONS PROMULGATED
THEREUNDER.


                        AMATI COMMUNICATIONS CORPORATION

                         Common Stock Purchase Warrant


AMATI COMMUNICATIONS CORPORATION, Delaware corporation (the "Company"), hereby
certifies that, for value received, [Chatterjee Entity] (the "Holder"), or
assigns, is entitled, subject to the terms set forth below, to purchase from the
Company, at any time and from time to time during the period beginning on the
seventy-fifth day following the date hereof and ending on the fifth anniversary
of such date in whole or in part, an aggregate of THREE HUNDRED THOUSAND
(300,000) fully paid and non-assessable shares (such number of shares for which
this Warrant is exercisable are sometimes referred to herein as the "Warrant
Shares") of the Common Stock of the Company at a purchase price, subject to the
provisions of Paragraph 3 hereof, of $25.00 per share (the "Purchase Price");
provided, however, that if the average of the per share daily low trading prices
of the Company's Common Stock on the Principal Market over any 90-day period
ending prior to the first anniversary of the date of the first Put Notice
delivered under the Investment Agreement, exceeds $50.00 per share, the number
of Warrant Shares shall be reduced from 300,000 to 150,000. The Purchase Price
and the number and character of such shares are subject to adjustment as
provided below, and the term "Common Stock" shall mean, unless the context
otherwise requires, the stock or other securities or property at the time
deliverable upon the exercise of this Warrant. This Warrant is herein called the
"Warrant." Capitalized terms used but not defined herein shall have the meanings
ascribed thereto in the Investment Agreement, dated as of the date hereof,
between the Company and the Holder (the "Investment Agreement").

<PAGE> 2





           1. EXERCISE OF WARRANT. The purchase rights evidenced by this Warrant
shall be exercised by the holder surrendering this Warrant, with the form of
subscription at the end hereof duly executed by such holder, to the Company at
its executive offices accompanied by payment of an amount (the "Exercise
Amount") equal to the Purchase Price multiplied by the number of shares being
purchased pursuant to such exercise, payable as follows: (a) by payment to the
Company in cash, by certified or official bank check, or by wire transfer of the
Exercise Amount, (b) by surrender to the Company for cancellation of securities
of the Company, including this Warrant having a Market Price (as hereinafter
defined) on the date of exercise equal to the Exercise Amount; or (c) by a
combination of the methods described in clauses (a) and (b) above. In lieu of
exercising the Warrant, the holder may elect to receive a payment equal to the
difference between (i) the Market Price multiplied by the number of shares as to
which the payment is then being elected and (ii) the exercise price with respect
to such shares, payable by the Company to the Holder only in shares of Common
Stock valued at the Market Price on the date of exercise. For purposes hereof,
the term "Market Price" shall mean the average closing price of a share of
Common Stock for the 15 consecutive Trading Days preceding such day on the
Principal Market or, if the shares of Common Stock or securities are not
publicly traded, the Market Price for such day shall be the fair market value
thereof determined jointly by the Company and the holder of this Warrant;
provided, however, that if such parties are unable to reach agreement within a
reasonable period of time, the Market Price shall be determined in good faith by
the independent investment banking firm selected jointly by the Company and the
holder of this Warrant or, if that selection cannot be made within 15 days, by
an independent investment banking firm selected by the American Arbitration
Association in accordance with its rules.

           1.1 Partial Exercise. This Warrant may be exercised for less than the
full number of shares of Common Stock, in which case the number of shares
receivable upon the exercise of this Warrant as a whole, and the sum payable
upon the exercise of this Warrant as a whole, shall be proportionately reduced.
Upon any such partial exercise, the Company at its expense will forthwith issue
to the holder hereof a new Warrant or Warrants of like tenor calling for the
number of shares of Common Stock as to which rights have not been exercised,
such Warrant or Warrants to be issued in the name of the holder hereof or his
nominee (upon payment by such holder of any applicable transfer taxes).

           2. DELIVERY OF STOCK CERTIFICATES ON EXERCISE. As soon as practicable
after the exercise of this Warrant and payment of the Purchase Price, and in any
event within ten (10) days thereafter, the Company, at its expense, will cause
to be issued in the name of and delivered to the holder hereof a certificate or
certificates for the number of fully paid and

<PAGE> 3

non-assessable shares or other securities or property to which such holder shall
be entitled upon such exercise, plus, in lieu of any fractional share to which
such holder would otherwise be entitled, cash in an amount determined in
accordance with Paragraph 3.9 hereof. The Company agrees that the shares so
purchased shall be deemed to be issued to the holder hereof as the record owner
of such shares as of the close of business on the date on which this Warrant
shall have been surrendered and payment made for such shares as aforesaid.

           3. ANTI-DILUTION PROVISIONS AND OTHER ADJUSTMENTS. In order to
prevent dilution of the right granted hereunder, the Purchase Price shall be
subject to adjustment from time to time in accordance with this Paragraph 3.
Upon each adjustment of the Purchase Price pursuant to this Paragraph 3, the
registered Holder of this Warrant shall thereafter be entitled to acquire upon
exercise, at the Purchase Price resulting from such adjustment, the number of
shares of the Company's Common Stock obtainable by multiplying the Purchase
Price in effect immediately prior to such adjustment by the number of shares of
the Company's Common Stock acquirable immediately prior to such adjustment and
dividing the product thereof by the Purchase Price resulting from such
adjustment.

           3.1 Adjustment for Issue or Sale of Common Stock at Less than
Purchase Price. Except as provided in Paragraph 3.2 or 3.5 below, if and
whenever on or after the date of issuance hereof the Company shall issue or
sell, or shall in accordance with subparagraphs 3.1(1) to (9), inclusive, be
deemed to have issued or sold, any shares of its Common Stock for a
consideration per share less than the Purchase Price in effect immediately prior
to the time of such issue or sale, then forthwith upon such issue or sale (the
"Triggering Transaction"), the Purchase Price shall, subject to subparagraphs
(1) to (9) of this Paragraph 3.1, be reduced to the Purchase Price (calculated
to the nearest tenth of a cent) determined by dividing:

                (i) an amount equal to the sum of (x) the product derived by
     multiplying the Number of Common Shares Deemed Outstanding immediately
     prior to such Triggering Transaction by the Purchase Price then in effect,
     plus (y) the consideration, if any, received by the Company upon
     consummation of such Triggering Transaction, by

                (ii) an amount equal to the sum of (x) the Number of Common
     Shares Deemed Outstanding immediately prior to such Triggering Transaction
     plus (y) the number of shares of Common Stock issued (or deemed to be
     issued in accordance with subparagraphs 3.1(1) to (9)) in connection with
     the Triggering Transaction.

           For purposes of this Paragraph 3, the term "Number of Common Shares
Deemed Outstanding" at any given time shall mean the sum of (i) the number of
shares of the Company's Common Stock

<PAGE> 4

           outstanding at such time, and (ii) the number of shares of the
           Company's Common Stock deemed to be outstanding under subparagraphs
           3.1(1) to (9), inclusive, at such time.

           For purposes of determining the adjusted Purchase Price under this
Paragraph 3.1, the following subsections (1) to (9), inclusive, shall be
applicable:

                (1)  In case the Company at any time shall in any manner grant
           (whether directly or by assumption in a merger or otherwise) any
           rights to subscribe for or to purchase, or any options for the
           purchase of, Common Stock or any stock or other securities
           convertible into or exchangeable for Common Stock (such rights or
           options being herein called "Options" and such convertible or
           exchangeable stock or securities being herein called "Convertible
           Securities"), whether or not such Options or the right to convert or
           exchange any such Convertible Securities are immediately exercisable
           and the price per share for which the Common Stock is issuable upon
           exercise, conversion or exchange (determined by dividing (x) the
           total amount, if any, received or receivable by the Company as
           consideration for the granting of such Options, plus the minimum
           aggregate amount of additional consideration payable to the Company
           upon the exercise of all such Options, plus, in the case of such
           Options which relate to Convertible Securities, the minimum aggregate
           amount of additional consideration, if any, payable upon the issue or
           sale of such Convertible Securities and upon the conversion or
           exchange thereof, by (y) the total maximum number of shares of Common
           Stock issuable upon the exercise of such Options or the conversion or
           exchange of such Convertible Securities) shall be less than the
           Purchase Price in effect immediately prior to the time of the
           granting of such Option," then the total maximum amount of Common
           Stock issuable upon the exercise of such Options, or, in the case of
           Options for Convertible Securities, upon the conversion or exchange
           of such Convertible Securities, shall (as of the date of granting of
           such Options) be deemed to be outstanding and to have been issued and
           sold by the Company for such price per share. No adjustment of the
           Purchase Price shall be made upon the actual issue of such shares of
           Common Stock or such Convertible Securities upon the exercise of such
           Options, except as otherwise provided in subparagraph (3) below.

                (2) In case the Company at any time shall in any manner issue
           (whether directly or by assumption in a merger or otherwise) or sell
           any Convertible Securities, whether or not the rights to exchange or
           convert thereunder are immediately exercisable, and the price per
           share for which Common Stock is issuable upon

<PAGE>5

           such conversion or exchange (determined by dividing (x) the total
           amount received or receivable by the Company as consideration for the
           issue or sale of such Convertible Securities, plus the minimum
           aggregate amount of additional consideration, if any, payable to the
           Company upon the conversion or exchange thereof, by (y) the total
           maximum number of shares of Common Stock issuable upon the conversion
           or exchange of all such Convertible Securities) shall be less than
           the Purchase Price in effect immediately prior to the time of such
           issue or sale, then the total maximum number of shares of Common
           Stock issuable upon conversion or exchange of all such Convertible
           Securities shall (as of the date of the issue or sale of such
           Convertible Securities) be deemed to be outstanding and to have been
           issued and sold by the Company for such price per share. No
           adjustment of the Purchase Price shall be made upon the actual issue
           of such Common Stock upon exercise of the rights to exchange or
           convert under such Convertible Securities, except as otherwise
           provided in subparagraph (3) below.

                (3) If the purchase price provided for in any Options referred
           to in subparagraph (1), the additional consideration, if any, payable
           upon the conversion or exchange of any Convertible Securities
           referred to in subparagraphs (1) or (2), or the rate at which any
           Convertible Securities referred to in subparagraph (1) or (2) are
           convertible into or exchangeable for Common Stock shall change at any
           time (other than under or by reason of provisions designed to protect
           against dilution of the type set forth in Paragraph 3.1 or 3.3), the
           Purchase Price in effect at the time of such change shall forthwith
           be readjusted to the Purchase Price which would have been in effect
           at such time had such Options or Convertible Securities still
           outstanding provided for such changed purchase price, additional
           consideration or conversion rate, as the case may be, at the time
           initially granted, issued or sold. If the purchase price provided for
           in any Option referred to in subparagraph (1) or the rate at which
           any Convertible Securities referred to in subparagraphs (1) or (2)
           are convertible into or exchangeable for Common Stock, shall be
           reduced at any time under or by reason of provisions with respect
           thereto designed to protect against dilution, then in case of the
           delivery of Common Stock upon the exercise of any such Option or upon
           conversion or exchange of any such Convertible Security, the Purchase
           Price then in effect hereunder shall forthwith be adjusted to such
           respective amount as would have been obtained had such Option or
           Convertible Security never been issued as to such Common Stock and
           had adjustments been made upon the issuance of the shares of Common
           Stock delivered as

<PAGE> 6

           aforesaid, but only if as a result of such adjustment the Purchase
           Price then in effect hereunder is hereby reduced.

                (4) On the expiration of any Option or the termination of any
           right to convert or exchange any Convertible Securities, the Purchase
           Price then in effect hereunder shall forthwith be increased to the
           Purchase Price which would have been in effect at the time of such
           expiration or termination had such Option or Convertible Securities,
           to the extent outstanding immediately prior to such expiration or
           termination, never been issued.

                (5) In case any Options shall be issued in connection with the
           issue or sale of other securities of the Company, together comprising
           one integral transaction in which no specific consideration is
           allocated to such Options by the parties thereto, such Options shall
           be deemed to have been issued without consideration.

                (6) In case any shares of Common Stock, Options or Convertible
           Securities shall be issued or sold or deemed to have been issued or
           sold for cash, the consideration received therefor shall be deemed to
           be the amount received by the Company therefor. In case any shares of
           Common Stock, Options or Convertible Securities shall be issued or
           sold for a consideration other than cash, the amount of the
           consideration other than cash received by the Company shall be the
           fair value of such consideration as determined in good faith by the
           Board of Directors of the Company. In case any shares of Common
           Stock, Options or Convertible Securities shall be issued in
           connection with any merger in which the Company is the surviving
           corporation, the amount of consideration therefor shall be deemed to
           be the fair value of such portion of the net assets and business of
           the non-surviving corporation as shall be attributed by the Board of
           Directors of the Company in good faith to such Common Stock, Options
           or Convertible Securities, as the case may be.

                (7) The number of shares of Common Stock outstanding at any
           given time shall not include shares owned or held by or for the
           account of the Company, and the disposition of any shares so owned or
           held shall be considered an issue or sale of Common Stock for the
           purpose of this Paragraph 3.1.

                (8) In case the Company shall declare a dividend or make any
           other distribution upon the stock of the Company payable in Options
           or Convertible Securities,

<PAGE> 7

           then in such case any Options or Convertible Securities, as the case
           may be, issuable in payment of such dividend or distribution shall be
           deemed to have been issued or sold without consideration.

                (9) For purposes of this Paragraph 3.1, in case the Company
           shall take a record of the holders of its Common Stock for the
           purpose of entitling them (x) to receive a dividend or other
           distribution payable in Common Stock, Options or in Convertible
           Securities, or (y) to subscribe for or purchase Common Stock, Options
           or Convertible Securities, then such record date shall be deemed to
           be the date of the issue or sale of the shares of Common Stock deemed
           to have been issued or sold upon the declaration of such dividend or
           the making of such other distribution or the date of the granting of
           such right or subscription or purchase, as the case may be.

           3.2 Dividends Not Paid Out of Earnings or Earned Surplus. In the
event the Company shall declare a dividend upon the Common Stock (other than a
dividend payable in Common Stock) payable otherwise than out of earnings or
earned surplus, determined in accordance with generally accepted accounting
principles, including the making of appropriate deductions for minority
interests, if any, in subsidiaries (herein referred to as "Liquidating
Dividends"), then, as soon as possible after the exercise of this Warrant, the
Company shall pay to the person exercising such Warrant an amount equal to the
aggregate value at the time of such exercise of all Liquidating Dividends
(including but not limited to the Common Stock which would have been issued at
the time of such earlier exercise and all other securities which would have been
issued with respect to such Common Stock by reason of stock splits, stock
dividends, mergers or reorganizations, or for any other reason). For the
purposes of this Paragraph 3.2, a dividend other than in cash shall be
considered payable out of earnings or earned surplus only to the extent that
such earnings or earned surplus are charged an amount equal to the fair value of
such dividend as determined in good faith by the Board of Directors of the
Company.

           3.3  Subdivisions and Combinations. In case the Corporation shall at
any time (i) subdivide the outstanding Common Stock or (ii) issue a stock
dividend on its outstanding Common Stock, the Purchase Price in effect
immediately prior to such subdivision or dividend shall be proportionately
reduced by the same ratio as the subdivison or dividend. In case the Corporation
shall at any time combine its outstanding Common Stock, Purchase Price in effect
immediately prior to such combination shall be proportionately increased by the
same ratio as the combination.

           3.4  Reorganization, Reclassification, Consolidation, Merger or Sale
of Assets. If any capital reorganization or

<PAGE> 8

reclassification of the capital stock of the Company, or consolidation or merger
of the Company with another corporation, or the sale of all or substantially all
of its assets to another corporation shall be effected in such a way that
holders of Common Stock shall be entitled to receive stock, securities, cash or
other property with respect to or in exchange for Common Stock, then, as a
condition of such reorganization, reclassification, consolidation, merger or
sale, lawful and adequate provision shall be made whereby the holder of this
Warrant shall have the right to acquire and receive upon exercise of this
Warrant such shares of stock, securities, cash or other property issuable or
payable (as part of the reorganization, reclassification, consolidation, merger
or sale) with respect to or in exchange for such number of outstanding shares of
the Company's Common Stock as would have been received upon exercise of this
Warrant at the Purchase Price then in effect. The Company will not effect any
such consolidation, merger or sale, unless prior to the consummation thereof the
successor corporation (if other than the Company) resulting from such
consolidation or merger or the corporation purchasing such assets shall assume
by written instrument mailed or delivered to the holder of this Warrant at the
last address of such holder appearing on the books of the Company, the
obligation to deliver to such holder such shares of stock, securities or assets
as, in accordance with the foregoing provisions, such holder may be entitled to
purchase. If a purchase, tender or exchange offer is made to and accepted by the
holders of more than 50% of the outstanding shares of Common Stock of the
Company, the Company shall not effect any consolidation, merger or sale with the
person having made such offer or with any Affiliate of such person, unless prior
to the consummation of such consolidation, merger or sale the holder of this
Warrant shall have been given a reasonable opportunity to then elect to receive
upon the exercise of this Warrant either the stock, securities or assets then
issuable with respect to the Common Stock of the Company or the stock,
securities or assets, or the equivalent, issued to previous holders of the
Common Stock in accordance with such offer. For purposes hereof the term
"Affiliate" with respect to any given person shall mean any person controlling,
controlled by or under common control with the given person.

           3.5 No Adjustment for Exercise of Certain Options, Warrants, Etc. The
provisions of this Section 3 shall not apply to any Common Stock issued,
issuable or deemed outstanding under subparagraphs 3.1(1) to (9) inclusive: (i)
to any person pursuant to any stock option, stock purchase or similar plan or
arrangement for the benefit of employees, consultants or directors of the
Company or its subsidiaries in effect on the date of issuance hereof, (ii)
pursuant to options, warrants and conversion rights in existence on the date of
issuance hereof, (iii) pursuant to the Investment Agreement or (iv) pursuant to
a firm committment underwritten registered offering under the 1933 Act.


<PAGE> 9




           3.6  Notices of Record Date, Etc.  In the event that:

                (1) the Company shall declare any cash dividend upon its Common
           Stock, or

                (2) the Company shall declare any dividend upon its Common Stock
           payable in stock or make any special dividend or other distribution
           to the holders of its Common Stock, or

                (3)  the Company shall offer for subscription pro rata to the
           holders of its Common Stock any additional shares of stock of any
           class or other rights, or

                (4) there shall be any capital reorganization or
           reclassification of the capital stock of the Company, including any
           subdivision or combination of its outstanding shares of Common Stock,
           or consolidation or merger of the Company with, or sale of all or
           substantially all of its assets to, another corporation, or

                (5) there shall be a voluntary or involuntary dissolution,
           liquidation or winding up of the Company;

then, in connection with such event, the Company shall give to the holder of
this Warrant:

                (ii) at least twenty (20) days' prior written notice of the date
     on which the books of the Company shall close or a record shall be taken
     for such dividend, distribution or subscription rights or for determining
     rights to vote in respect of any such reorganization, reclassification,
     consolidation, merger, sale, dissolution, liquidation or winding up; and

                (iii) in the case of any such reorganization, reclassification,
     consolidation, merger, sale, dissolution, liquidation or winding up, at
     least twenty (20) days' prior written notice of the date when the same
     shall take place. Such notice in accordance with the foregoing clause (i)
     shall also specify, in the case of any such dividend, distribution or
     subscription rights, the date on which the holders of Common Stock shall be
     entitled thereto, and such notice in accordance with the foregoing clause
     (ii) shall also specify the date on which the holders of Common Stock shall
     be entitled to exchange their Common Stock for securities or other property
     deliverable upon such reorganization, reclassification consolidation,
     merger, sale, dissolution, liquidation or winding up, as the case may be.
     Each such written notice shall be given by first class mail, postage
     prepaid, addressed to the holder of this Warrant at the address of such
     holder as shown on the books of the Company.


<PAGE> 10



           3.7  Grant, Issue or Sale of Options, Convertible Securities, or
Rights.  If at any time or from time to time on or after the date of issuance
hereof, the Company shall grant, issue or sell any Options, Convertible
Securities or rights to purchase property (the "Purchase Rights") pro rata to
the record holders of any class of Common Stock of the Company and such grants,
issuances or sales do not result in an adjustment of the Purchase Price under
Paragraph 3.1 hereof, then the holder of this Warrant shall be entitled to
acquire (within thirty (30) days after the later to occur of the initial
exercise date of such Purchase Rights or receipt by such holder of the notice
concerning Purchase Rights to which such holder shall be entitled under
Paragraph 3.6) and upon the terms applicable to such Purchase Rights either:

                (i) the aggregate Purchase Rights which such holder could have
     acquired if it had held the number of shares of Common Stock acquirable
     upon exercise of this Warrant immediately before the grant, issuance or
     sale of such Purchase Rights; provided that if any Purchase Rights were
     distributed to holders of Common Stock without the payment of additional
     consideration by such holders, corresponding Purchase Rights shall be
     distributed to the exercising holder of this Warrant as soon as possible
     after such exercise and it shall not be necessary for the exercising holder
     of this Warrant specifically to request delivery of such rights; or

                (ii) in the event that any such Purchase Rights shall have
     expired or shall expire prior to the end of said thirty (30) day period,
     the number of shares of Common Stock or the amount of property which such
     holder could have acquired upon such exercise at the time or times at which
     the Company granted, issued or sold such expired Purchase Rights.

           3.8  Adjustment by Board of Directors.  If any event occurs as to
which, in the opinion of the Board of Directors of the Company, the provisions
of this Section 3 are not strictly applicable or if strictly applicable would
not fairly protect the rights of the holder of this Warrant in accordance with
the essential intent and principles of such provisions, then the Board of
Directors shall make an adjustment in the application of such provisions, in
accordance with such essential intent and principles, so as to protect such
rights as aforesaid, but in no event shall any adjustment have the effect of
increasing the Purchase Price as otherwise determined pursuant to any of the
provisions of this Section 3 except in the case of a combination of shares of a
type contemplated in Paragraph 3.3 and then in no event to an amount larger than
the Purchase Price as adjusted pursuant to Paragraph 3.3.



<PAGE> 11


           3.9  Fractional Shares.  The Company shall not issue fractions of
shares of Common Stock upon exercise of this Warrant or scrip in lieu thereof.
If any fraction of a share of Common Stock would, except for the provisions of
this Paragraph 3.9, be issuable upon exercise of this Warrant, the Company shall
in lieu thereof pay to the person entitled thereto an amount in cash equal to
the current value of such fraction, calculated to the nearest one-hundredth
(1/100) of a share, to be computed (i) if the Common Stock is listed on any
national securities exchange on the basis of the last sales price of the Common
Stock on such exchange (or the quoted closing bid price if there shall have been
no sales) on the date of conversion, or (ii) if the Common Stock shall not be
listed, on the basis of the mean between the closing bid and asked prices for
the Common Stock on the date of conversion as reported by NASDAQ, or its
successor, and if there are not such closing bid and asked prices, on the basis
of the fair market value per share as determined by the Board of Directors of
the Company.

           3.10  Officers' Statement as to Adjustments.  Whenever the Purchase
Price shall be adjusted as provided in Section 3 hereof, the Company shall
forthwith file at each office designated for the exercise of this Warrant, a
statement, signed by the Chairman of the Board, the President, any Vice
President or Treasurer of the Company, showing in reasonable detail the facts
requiring such adjustment and the Purchase Price that will be effective after
such adjustment. The Company shall also cause a notice setting forth any such
adjustments to be sent by mail, first class, postage prepaid, to the record
holder of this Warrant at his or its address appearing on the stock register. If
such notice relates to an adjustment resulting from an event referred to in
Paragraph 3.6, such notice shall be included as part of the notice required to
be mailed and published under the provisions of Paragraph 3.6 hereof.

           4. NO DILUTION OR IMPAIRMENT. The Company will not, by amendment of
its charter or through reorganization, consolidation, merger, dissolution, sale
of assets or any other voluntary action, avoid or seek to avoid the observance
or performance of any of the terms of this Warrant, but will at all times in
good faith assist in the carrying out of all such terms and in the taking of all
such action as may be necessary or appropriate in order to protect the rights of
the holder hereof against dilution or other impairment. Without limiting the
generality of the foregoing, the Company will not increase the par value of any
shares of stock receivable upon the exercise of this Warrant above the amount
payable therefor upon such exercise, and at all times will take all such action
as may be necessary or appropriate in order that the Company may validly and
legally issue fully paid and non-assessable stock upon the exercise of this
Warrant.

           5. RESERVATION OF STOCK, ETC., ISSUABLE ON EXERCISE OF WARRANTS. The
Company shall at all times reserve and keep

<PAGE> 12


available out of its authorized but unissued stock, solely for the issuance and
delivery upon the exercise of this Warrant and other similar Warrants, such
number of its duly authorized shares of Common Stock as from time to time shall
be issuable upon the exercise of this Warrant and all other similar Warrants at
the time outstanding.

           6. REPLACEMENT OF WARRANT. Upon receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and (in the case of loss, theft or destruction) upon delivery of an
indemnity agreement (with surety if reasonably required) in an amount reasonably
satisfactory to it, or (in the case of mutilation) upon surrender and
cancellation thereof, the Company will issue, in lieu thereof, a new Warrant of
like tenor.

           7. REMEDIES. The Company stipulates that the remedies at law of the
holder of this Warrant in the event of any default by the Company in the
performance of or compliance with any of the terms of this Warrant are not and
will not be adequate, and that the same may be specifically enforced.

           8. NEGOTIABILITY, ETC. This Warrant is issued upon the following
terms, to all of which each taker or owner hereof consents and agrees:

           (a)  Subject to the legend appearing on the first page hereof, title
                to this Warrant may be transferred by endorsement (by the holder
                hereof executing the form of assignment at the end hereof
                including guaranty of signature) and delivery in the same manner
                as in the case of a negotiable instrument transferable by
                endorsement and delivery.

           (b)  Any person in possession of this Warrant properly endorsed is
                authorized to represent himself as absolute owner hereof and is
                granted power to transfer absolute title hereto by endorsement
                and delivery hereof to a bona fide purchaser hereof for value;
                each prior taker or owner waives and renounces all of his
                equities or rights in this Warrant in favor of every such bona
                fide purchaser, and every such bona fide purchaser shall acquire
                title hereto and to all rights represented hereby.

           (c)  Until this Warrant is transferred on the books of the Company,
                the Company may treat the registered holder of this Warrant as
                the absolute owner hereof for all purposes without being
                affected by any notice to the contrary.

           (d)  Prior to the exercise of this Warrant, the holder hereof shall
                not be entitled to any rights of a

<PAGE> 13


                shareholder of the Company with respect to shares for which this
                Warrant shall be exercisable, including, without limitation, the
                right to vote, to receive dividends or other distributions or to
                exercise any preemptive rights, and shall not be entitled to
                receive any notice of any proceedings of the Company, except as
                provided herein.

           (e)  The Company shall not be required to pay any Federal or state
                transfer tax or charge that may be payable in respect of any
                transfer involved in the transfer or delivery of this Warrant or
                the issuance or conversion or delivery of certificates for
                Common Stock in a name other than that of the registered holder
                of this Warrant or to issue or deliver any certificates for
                Common Stock upon the exercise of this Warrant until any and all
                such taxes and charges shall have been paid by the holder of
                this Warrant or until it has been established to the Company's
                satisfaction that no such tax or charge is due.

           9. SUBDIVISION OF RIGHTS.  This Warrant (as well as any new warrants
issued pursuant to the provisions of this paragraph) is exchangeable, upon the
surrender hereof by the holder hereof, at the principal office of the Company
for any number of new warrants of like tenor and date representing in the
aggregate the right to subscribe for and purchase the number of shares of Common
Stock of the Company which may be subscribed for and purchased hereunder.

           10. MAILING OF NOTICES, ETC. All notices and other communications
from the Company to the holder of this Warrant shall be mailed by first-class
certified mail, postage prepaid, to the address furnished to the Company in
writing by the last holder of this Warrant who shall have furnished an address
to the Company in writing.

           11. HEADINGS, ETC. The headings in this Warrant are for purposes of
reference only, and shall not limit or otherwise affect the meaning hereof.

           12. CHANGE, WAIVER, ETC. Neither this Warrant nor any term hereof may
be changed, waived, discharged or terminated orally but only by an instrument in
writing signed by the party against which enforcement of the change, waiver,
discharge or termination is sought.



<PAGE> 14


           13. GOVERNING LAW. THIS WARRANT SHALL BE CONSTRUED AND ENFORCED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE.


                                        AMATI COMMUNICATIONS CORPORATION


                                        By______________________________


Dated: ____________ __, 199


Attest:



_____________________________

<PAGE> 15




                  [To be signed only upon exercise of Warrant]



To AMATI COMMUNICATIONS CORPORATION

           The undersigned, the holder of the within Warrant, hereby irrevocably
elects to exercise the purchase right represented by such Warrant for, and to
purchase thereunder, ___________shares of Common Stock of AMATI COMMUNICATIONS
CORPORATION and herewith makes payment of $___________ therefor, and requests
that the certificates for such shares be issued in the name of _____________,
and be delivered to , whose address is __________________________.


Dated:



____________________________


                                                  ____________________________
(Signature must conform in all respects to name of Holder as specified on the
face of the Warrant)


                                                  ___________________________
                                                              Address



<PAGE> 16


                  [To be signed only upon transfer of Warrant]



           FOR VALUE RECEIVED, the undersigned hereby sells, assigns and
transfers unto AMATI COMMUNICATIONS CORPORATION the right represented by the
within Warrant to purchase the shares of the Common Stock of AMATI
COMMUNICATIONS CORPORATION to which the within Warrant relates, and appoints
attorney to transfer said right on the books of AMATI COMMUNICATIONS CORPORATION
with full power of substitution in the premises.


Dated:


_____________________________



(Signature must conform in all respects to name of Holder as specified on the
face of the Warrant)



                                                  ___________________________
                                                          Address


In the presence of



________________________




<PAGE>1


                             SECURED RECOURSE DEMAND
                                 PROMISSORY NOTE

$1,000,000
New York, New York                        September 19, 1996


                  FOR VALUE RECEIVED, the sufficiency of which is hereby
acknowledged, Amati Communications Corporation, a Delaware corporation
("Maker"), hereby unconditionally promises to pay to Chatterjee Management
Company, a Delaware corporation ("Investor"), having an address at 888 Seventh
Avenue, Suite 3000, New York, New York 10106, ON DEMAND and in immediately
available funds at such address or at such other place as may be designated in
writing by the holder of this Note, or its assigns, the principal sum of ONE
MILLION DOLLARS ($1,000,000). The undersigned also agrees to pay interest at
said office in like money at a rate per annum equal to fifteen percent (15%)
(computed on the basis of a 360-day year) from the date hereof on the unpaid
principal amount hereof until payment thereof. Interest shall accrue daily and
shall be payable upon payment in full of the unpaid principal amount hereof.
Notwithstanding the foregoing,(i) any amount of principal and (to the extent
permitted by law) interest which is not paid when due (whether at stated
maturity or otherwise) shall bear interest from the date on which such amount is
due until such amount is paid in full, payable on demand, at a rate of seventeen
and one-half percent (17.5%) per annum, and (ii) the interest rate borne hereby
shall not exceed the maximum rate permitted by applicable law.

                  Capitalized terms used herein that are not defined herein
shall have the meanings ascribed thereto in that certain Collateral Assignment
and Security Agreement between Investor and Maker dated as of even date herewith
(the "Agreement").

                  Maker may prepay this Note in whole or from time to time in
part, without premium or penalty.

                  It is expressly understood and agreed that any demand for
payment of any amounts owing hereunder may be made by Investor at any time and
for any reason whatsoever, regardless of any adverse impact that such demand
and accompanying repayment of the Note would have on Maker or any other
person. The principal of and accrued and unpaid interest on the Note shall
automatically become due and payable in the event the Maker shall file, or
consent by answer or otherwise to the filing against it of, a petition for
relief or reorganization or arrangement or any other petition in bankruptcy,
for liquidation or to take advantage of any state or federal bankruptcy or
insolvency law of any jurisdiction, without presentment, demand, protest or
further notice of any kind, all of which are hereby waived by the Maker.


<PAGE>2


                  If any payment on this Note becomes due and payable on a
Saturday, Sunday or other day on which commercial banks in New York City are
authorized or required by law to close, the maturity thereof shall be extended
to the next succeeding business day with respect to payments of principal, and
interest thereon shall be payable during such extension.

                  This Note is binding on Maker and Maker hereby waives
presentment, demand, notice and protest and any defense by reason of an
extension of time for payment or other indulgences. Failure of the holder hereof
to assert any right herein shall not be deemed to be a waiver thereof.

                  This Note is not negotiable and shall not be transferred by
Investor without the prior written consent of Maker. Maker may not set off from
any amounts due under this Note any amounts due Maker from Investor or its
transferees.

                  The Obligations of Maker under this Note are secured by the
assignment of the Intellectual Property in accordance with the terms of the
Agreement. The Maker shall remain liable for any deficiency if the proceeds of
any sale or other disposition of Intellectual Property are insufficient to pay
the Obligations and the fees and disbursements of any attorneys employed by
Investor to collect such deficiency.

                  Maker hereby makes the following representations and
warranties to the Investor:

                  (a) Organization and Qualification. Maker is a corporation
duly incorporated and existing in good standing under the laws of the State of
Delaware, and has the requisite corporate power to own its properties and to
carry on its business as now being conducted.

                  (b) Authorization; Enforcement. (i) The Maker has the
requisite corporate power and authority to enter into and perform this Note,
(ii) the execution and delivery of this Note by Maker and the consummation by it
of the transactions contemplated hereby have been duly authorized by all
necessary corporate action, and no further consent or authorization of Maker or
its Board of Directors or stockholders is required, (iii) this Note has been
duly executed and delivered by Maker, and (iv) this Note constitutes the valid
and binding obligation of Maker enforceable against Maker in accordance with its
terms.

                  (c) No Conflicts. The execution, delivery and performance of
this Note by Maker and the consummation by Maker of the transactions
contemplated hereby do not and will not (i) result in a violation of Maker's
Certificate of Incorporation or By-Laws or (ii) conflict with, or constitute a
default (or an event which with notice or lapse of time or both would become a
default) under, or give to others any rights of termination,


                                       2
<PAGE>3


amendment,  acceleration  or cancellation  of, any agreement,  indenture or
instrument  to which  Maker is a party  and is still in  effect,  or result in a
violation of any federal, state, local or foreign law, rule, regulation,  order,
judgment or decree  applicable  to Maker,  or by which any  property or asset of
Maker is bound or affected (except for such conflicts,  defaults,  terminations,
amendments,   accelerations,   cancellations   and   violations  as  would  not,
individually  or in  the  aggregate,  have  a  material  adverse  effect  on the
business,  operations, assets, financial condition or prospects of Maker and its
subsidiaries,  taken as a whole). No consent of any third party is necessary for
Maker to consummate the transactions contemplated hereby.

                  This Note shall be governed by and construed and enforced in
accordance with the laws of the State of New York, without giving effect to
principles of conflicts of law thereof.


                                            AMATI COMMUNICATIONS CORPORATION


                                            By:/s/ Ronald Carlini
                                               Name: Ronald Carlini
                                               Title: VP - Corporate
                                                      Development



                                       3




<PAGE>


                             SECURED RECOURSE DEMAND
                                 PROMISSORY NOTE

$2,000,000
New York, New York                                   October 8, 1996


     FOR VALUE RECEIVED, the sufficiency of which is hereby acknowledged,  Amati
Communications   Corporation,   a   Delaware   corporation   ("Maker"),   hereby
unconditionally  promises to pay to Chatterjee  Management  Company,  a Delaware
corporation  ("Investor"),  having an address at 888 Seventh Avenue, Suite 3000,
New York, New York 10106,  ON DEMAND and in immediately  available funds at such
address or at such other place as may be  designated in writing by the holder of
this  Note,  or  its  assigns,   the  principal  sum  of  TWO  MILLION   DOLLARS
($2,000,000). The undersigned also agrees to pay interest at said office in like
money at a rate per annum equal to fifteen  percent (15%) (computed on the basis
of a 360-day  year) from the date hereof on the unpaid  principal  amount hereof
until  payment  thereof.  Interest  shall accrue daily and shall be payable upon
payment in full of the  unpaid  principal  amount  hereof.  Notwithstanding  the
foregoing,(i)  any  amount of  principal  and (to the extent  permitted  by law)
interest  which is not paid when due (whether at stated  maturity or  otherwise)
shall bear  interest from the date on which such amount is due until such amount
is paid in full,  payable on demand, at a rate of seventeen and one-half percent
(17.5%) per annum,  and (ii) the interest rate borne hereby shall not exceed the
maximum rate permitted by applicable law.

     Capitalized terms used herein that are not defined herein shall
have the meanings ascribed thereto in that certain Collateral Assignment and
Security Agreement between Investor and Maker dated as of even date herewith
(the "Agreement").

     Maker may prepay  this Note in whole or from time to time in part,  without
premium or penalty.

     It is  expressly  understood  and agreed that any demand for payment of any
amounts  owing  hereunder may be made by Investor at any time and for any reason
whatsoever,  regardless of any adverse impact that such demand and  accompanying
repayment of the Note would have on Maker or any other person.  The principal of
and accrued and unpaid interest on the Note shall  automatically  become due and
payable in the event the Maker shall file,  or consent by answer or otherwise to
the filing against it of, a petition for relief or reorganization or arrangement
or any other petition in bankruptcy, for liquidation or to take advantage of any
state or federal  bankruptcy  or  insolvency  law of any  jurisdiction,  without
presentment,  demand,  protest or further  notice of any kind,  all of which are
hereby waived by the Maker.


<PAGE>


     If any payment on this Note  becomes due and payable on a Saturday,  Sunday
or other  day on which  commercial  banks in New  York  City are  authorized  or
required by law to close,  the  maturity  thereof  shall be extended to the next
succeeding  business  day with  respect to payments of  principal,  and interest
thereon shall be payable during such extension.

     This Note is binding on Maker and Maker hereby waives presentment,  demand,
notice and protest and any defense by reason of an extension of time for payment
or other  indulgences.  Failure of the holder  hereof to assert any right herein
shall not be deemed to be a waiver thereof.

     This  Note is not  negotiable  and  shall not be  transferred  by  Investor
without  the prior  written  consent  of  Maker.  Maker may not set off from any
amounts  due  under  this  Note any  amounts  due  Maker  from  Investor  or its
transferees.

     The  Obligations  of Maker under this Note are secured by the assignment of
the  Intellectual  Property in accordance  with the terms of the Agreement.  The
Maker shall  remain  liable for any  deficiency  if the  proceeds of any sale or
other  disposition  of  Intellectual   Property  are  insufficient  to  pay  the
Obligations and the fees and disbursements of any attorneys employed by Investor
to collect such deficiency.

     Maker hereby makes the  following  representations  and  warranties  to the
Investor:

     (a)   Organization   and   Qualification.   Maker  is  a  corporation  duly
incorporated  and  existing  in good  standing  under  the laws of the  State of
Delaware,  and has the requisite  corporate  power to own its  properties and to
carry on its business as now being conducted.

     (b) Authorization;  Enforcement.  (i) The Maker has the requisite corporate
power and authority to enter into and perform this Note,  (ii) the execution and
delivery of this Note by Maker and the  consummation  by it of the  transactions
contemplated hereby have been duly authorized by all necessary corporate action,
and no further  consent or  authorization  of Maker or its Board of Directors or
stockholders  is required,  (iii) this Note has been duly executed and delivered
by Maker,  and (iv) this Note  constitutes  the valid and binding  obligation of
Maker enforceable against Maker in accordance with its terms.

     (c) No Conflicts.  The execution,  delivery and performance of this Note by
Maker and the consummation by Maker of the transactions  contemplated  hereby do
not  and  will  not  (i)  result  in  a  violation  of  Maker's  Certificate  of
Incorporation  or By-Laws or (ii) conflict  with, or constitute a default (or an
event which with notice or lapse of time or both would become a default)  under,
or give to others any rights of termination,

                                       2
<PAGE>

amendment,  acceleration  or cancellation  of, any agreement,  indenture or
instrument  to which  Maker is a party  and is still in  effect,  or result in a
violation of any federal, state, local or foreign law, rule, regulation,  order,
judgment or decree  applicable  to Maker,  or by which any  property or asset of
Maker is bound or affected (except for such conflicts,  defaults,  terminations,
amendments,   accelerations,   cancellations   and   violations  as  would  not,
individually  or in  the  aggregate,  have  a  material  adverse  effect  on the
business,  operations, assets, financial condition or prospects of Maker and its
subsidiaries,  taken as a whole). No consent of any third party is necessary for
Maker to consummate the transactions contemplated hereby.

     This Note shall be governed by and  construed  and  enforced in  accordance
with the laws of the State of New York,  without  giving effect to principles of
conflicts of law thereof.


                                            AMATI COMMUNICATIONS CORPORATION


                                            By:/s/ James Steenbergen
                                               Name: James Steenbergen
                                               Title: President, Chief
                                               Executive Officer, Chief
                                               Financial Officer






                                       3


<PAGE>


                              COLLATERAL ASSIGNMENT
                             AND SECURITY AGREEMENT

               This COLLATERAL ASSIGNMENT AND SECURITY AGREEMENT (this
"Assignment") made as of this 19th day of September, 1996 by Amati
Communications Corporation, a Delaware corporation having its chief executive
office at 2043 Samaritan Drive, San Jose, California 95124 ("Assignor") in favor
of Chatterjee Management Company, a Delaware corporation (the "Beneficiary", and
sometimes herein the "Assignee").

               PRELIMINARY STATEMENTS.

               (1) Beneficiary has agreed to loan the Assignor up to $3,000,000
(the "Loan"), to be evidenced by a promissory note delivered by the Assignor to
Beneficiary substantially in the form attached hereto as Exhibit A (the "Note").

               (2) It is a condition precedent to the making of the Loan by the
Beneficiary under the Note that Assignor shall have assigned to the Beneficiary,
its Intellectual Property (as defined below).

               NOW, THEREFORE, in consideration of the premises set forth herein
and for other good and valuable consideration, the receipt and sufficiency of
which is hereby acknowledged, Assignor agrees as follows:

               1. Incorporation of Note. The Note and the terms and provisions
thereof are hereby incorporated herein in their entirety by this reference
thereto. Terms used herein which are defined in the Note shall have the
respective meanings set forth in the Note unless otherwise defined herein.

               2. Assignment and Grant of Security. To secure the complete and
timely payment of all the obligations of Assignor now or hereafter existing,
whether matured or unmatured, contingent or liquidated, under the Note,
including any extensions, modifications, substitutions, amendments and renewals
thereof, whether for principal, interest, premium, fees, expenses or otherwise,
and all obligations of Assignor now or hereafter existing under this Agreement
(all such obligations secured hereby being the "Obligations"), Assignor hereby
pledges, grants, sells, transfers, sets over, conveys and assigns to Assignee
for its benefit the entire right, title and interest of Assignor in and to the
following (the "Intellectual Property"): (i) all United States patents and
patent applications, including all proceeds thereof, in which Assignor has or,
in the future, may have the right (but not the obligation) to sue for past,
present and future infringements in the name of Assignor or in the name

<PAGE>


of Assignee, all rights (but not obligations) corresponding hereto and all
reissues, divisions, continuations, renewals, extensions and
continuations-in-part thereof; (ii) all trademarks and service marks (registered
or unregistered), trade dress, trade names and other names and slogans embodying
business or product goodwill or indications of origin, all applications or
registrations in any jurisdiction pertaining to the foregoing and all goodwill
associated therewith, all as owned or used by Assignor; (iii) all patentable
inventions, discoveries, improvements, ideas, know-how, formula methodology,
processes, technology and computer programs, software and databases (including
source code, object code, development documentation, programming tools,
drawings, specifications and data), all as owned or used by Assignor; (iv) all
trade secrets, including confidential and other non-public information, and the
right in any jurisdiction to limit the use or disclosure thereof, all as owned
or used by Assignor; (v) all copyrights in writings, designs, mask works or
other works, and registrations or applications for registration of copyrights in
any jurisdiction, all as owned or used by Assignor; (vi) all licenses (including
the rights to revenue streams in respect of licenses granted by Assignor),
immunities, covenants not to sue and the like relating to any of the foregoing
(it being understood and agreed that the Intellectual Property assigned hereby
shall include, without limitation, rights and interests pursuant to licensing or
other contracts in favor of Assignor pertaining to Intellectual Property
presently or in the future owned or used by third parties, but in the case of
third parties which are not affiliates of Assignor only to the extent permitted
by such licensing or other contracts and, if not so permitted, only with the
consent of such third parties); and (vii) all claims or causes of action arising
out of or related to infringement or misappropriation of any of the foregoing.
Without limiting the generality of the foregoing, this Agreement secures the
payment of all amounts that constitute part of the Obligations and would be owed
by Assignor to Assignee under the Note but for the fact that they are
unenforceable or not allowable because of the existence of a bankruptcy,
reorganization or similar proceeding involving Assignor.

               3. Representations and Warranties. Assignor represents and
warrants as follows:

               (a) A true and complete list of all Intellectual Property is set
          forth in Schedule A hereto.

               (b) The Intellectual Property is subsisting and has not been
          adjudged invalid or unenforceable and Assignor is not aware of any
          claim by any third party that the Intellectual Property is invalid or
          unenforceable.

               (c) To the best of Assignor's knowledge, each of the Intellectual
          Property is valid and enforceable.


                                       2
<PAGE>


               (d) No claim has been made to Assignor in writing that the
          practice of any of the Intellectual Property does or may violate the
          rights of any third person.

               (e) Assignor is the legal and beneficial owner of the
          Intellectual Property free and clear of any lien or other encumbrance,
          including without limitation, assignments, licenses, shop rights and
          covenants by Assignor not to sue third persons, except for (i) the
          security interest and assignment created by this Assignment and (ii)
          the licenses granted by Assignor set forth on Schedule B hereto. No
          effective financing statement or other instrument similar in effect
          covering all or any part of the Patents is on file in any recording
          office except such as may have been filed in favor of Assignee
          relating to this Assignment or for which duly executed termination
          statements have been recorded or delivered to Assignee.

               (f) This Assignment will create in favor of Assignee a valid and
          perfected first priority security interest in the Intellectual
          Property upon making the filings referred to in clause (g) below.

               (g) Except for the filing of financing statements with the
          Secretary of State of California under the Uniform Commercial Code and
          filings with the United States Patent and Trademark Office, no
          authorization, approval or other action by, and no notice to or filing
          with, any governmental authority or regulatory body is required either
          (i) for the grant by Assignor of the security interest granted hereby
          or for the execution, delivery or performance of this Assignment by
          Assignor or (ii) for the perfection of or the exercise by Assignee of
          its rights and remedies hereunder to the Intellectual Property in the
          United States of America.

               (h) The chief executive office of Assignor is located at the
          address set forth above for Assignor.

               4. New Intellectual Property and Applications. If, at any time
while amounts are outstanding under the Note, Assignor shall obtain rights to
any new Intellectual Property, the provisions of this Assignment shall
automatically apply thereto. With respect to all of the foregoing rights or
benefits, Assignor shall give to Assignee prompt notice thereof in writing.

               5. Assignor's Covenants. On a continuing basis, Assignor will
make, execute, acknowledge and deliver, and file and record in the proper filing
and recording places, all such instruments, including, without limitation,
appropriate financing and continuation statements and security agreements, and
take all such action as may be deemed necessary or desirable by Assignee to
carry out the intent and purposes of this Assignment, or for assuring and
confirming to Assignee the grant or perfection of a




                                       3
<PAGE>


security interest in all Intellectual Property. Without limiting the generality
of the foregoing sentence, Assignor:

               (a) will not enter into any agreement which would or might in any
          way impair or conflict with Assignor's obligations hereunder without
          Assignee's prior written consent;

               (b) will, upon the written request of Assignee, use its best
          efforts to obtain any necessary consents of third parties to the grant
          or perfection of a security interest to Assignee with respect to the
          Intellectual Property;

               (c) authorizes Assignee in its sole discretion to modify this
          Assignment without first obtaining Assignor's approval of or signature
          to such modification by amending Schedule A hereto to include
          reference to any right, title or interest in any existing Intellectual
          Property or any Intellectual Property acquired by Assignor after the
          execution hereof or to delete any reference to any right, title or
          interest in any Intellectual Property in which Assignor no longer has
          or claims any right, title or interest;

               (d) will, from time to time, upon Assignee's request, cause its
          books and records to be marked with such legends or segregated in such
          manner as Assignee may specify, and take or cause to be taken such
          other action and adopt such procedures as Assignee may specify to give
          notice of or to perfect the security interest in the Intellectual
          Property intended to be created hereby;

               (e) will at all times keep at least one complete set of its
          records concerning all of the Intellectual Property at its chief
          executive office as set forth above and will not change the location
          of its chief executive office or such records without giving Assignee
          at least 30 days prior written notice thereof;

               (f) will  promptly,  following  its  becoming  aware  thereof,
         notify Assignee of the institution of, or any adverse determination in,
         any proceeding in the United States Patent and Trademark  Office or any
         United States or foreign court regarding  Assignee's claim of ownership
         in any of the Intellectual Property;

               (g)  concurrently  with the filing of an  application  for any
         Intellectual  Property,  will  execute,  deliver  and record (i) in all
         places  where  this  Assignment  is  recorded  an  appropriate   Patent
         Collateral Assignment and Security Agreement, substantially in the form
         hereof,  with  appropriate  insertions  to the  extent of its  interest
         therein, and (ii) such appropriate financing statements as


                                       4
<PAGE>


          may be necessary in order to perfect and preserve the security
          interest and assignment granted thereby;

               (h) will not permit the inclusion in any contract to which it
          becomes a party of any provisions which could in any way reasonably be
          expected to impair or prevent the creation of a security interest in
          Assignor's rights and interest in any property included within the
          definition of the Intellectual Property acquired under such contracts;

               (i) will properly maintain the Intellectual Property;

               (j) will not grant any security interest in any Intellectual
          Property except in the name of Assignee;

               (k) except as provided in Section 9 hereof, will not sell,
          license or contract for sale or otherwise dispose of any Intellectual
          Property;

               (l) will, upon any officer of Assignor obtaining knowledge
          thereof, promptly notify Assignee of any event which materially
          adversely affects the value of any Intellectual Property, the ability
          of Assignor or Assignee to dispose of any of the Intellectual Property
          or the rights and remedies of Assignee in relation thereto including,
          without limitation, the levy of any legal process against any of the
          Intellectual Property;

               (m) will, until Assignee exercises its rights to make collection,
          diligently keep reasonable records respecting the Intellectual
          Property;

               (n) will promptly notify Assignee of any suspected infringement
          of any of the Intellectual Property by any third party and of all
          steps, including the commencement and course of litigation, taken to
          remedy such infringement; and

               (o) will apply proper statutory patent notice to all products
          covered by the Intellectual Property.

               6. Amounts Payable in Respect of the Intellectual Property.
Except as otherwise provided in this Section 6, Assignor shall continue to
collect, at its own expense, all amounts due or to become due Assignor in
respect of the Intellectual Property. If the Assignor fails to pay or perform
any of the Obligations in accordance with their respective terms and such
failure continues following 10 days written notice thereof (a "Default"),
Assignee is hereby given full power and authority (a) to notify any and all
obligors with respect to any Patent which Assignor, except for the execution
hereof, could notify, and (b) to demand, take, collect, sue for and receive for
its own use all amounts due or to become due Assignor in respect of the
Intellectual Property, and in connection therewith to enforce all rights and
remedies with respect to any Intellectual


                                       5
<PAGE>

Property which Assignor could enforce if this Assignment had not been made; and
Assignor hereby ratifies any action which Assignee shall lawfully take to
enforce Assignee's rights hereunder. Whether or not Assignee shall have so
notified any obligors, Assignor shall at its expense render all reasonable
assistance to Assignee in enforcing claims against such obligors.

               7. Power of Attorney. Assignor hereby authorizes and empowers the
Assignee, from time to time in the Assignee's discretion from and after the
occurrence and during the continuance of a Default, to make, constitute and
appoint any officer or agent of the Assignee as Assignor's true and lawful
attorney-in-fact, with power (a) to endorse Assignor's name on all applications,
documents, papers and instruments necessary or desirable for the Assignee in the
use or maintenance of the Intellectual Property, (b) to take any other actions
with respect to the Intellectual Property, including without limitation,
commencement or continuation of any litigation or administrative proceeding, as
the Assignee deems in to be in its best interests, (c) to grant or issue an
exclusive or non-exclusive license to the Intellectual Property to anyone, or
(d) to assign, pledge, convey or otherwise transfer title in or dispose of the
Intellectual Property to anyone.

               8. Patent Applications, Maintenance and Litigation. Assignor
shall have the duty, through counsel identified in Section 15 hereof or
otherwise reasonably acceptable to Assignee, to prosecute diligently any patent
application of the Patents specifically identified in Schedule A hereto pending
as of the date of this Assignment or thereafter as long as any amounts are
outstanding under the Note, to make application on any existing or future
unpatented but patentable inventions and to preserve and maintain all
Intellectual Property as to which a security interest has been or is in the
future granted pursuant to this Assignment (except those having a commercial
value that in the good faith business judgment of the Assignor do not warrant
such application or preservation). Any expenses incurred in connection with such
an application, or in protecting, maintaining or preserving the Patents, shall
be borne by Assignor.

               Notwithstanding Section 2 hereof, Assignor, through counsel
identified in Section 15 hereof or otherwise reasonably acceptable to Assignee,
shall have the exclusive right and obligation prior to the occurrence and during
the continuance of a Default, to commence and diligently prosecute in its own
name, as real party in interest, for its own benefit and at its own expense,
such suits, proceedings or other actions for infringement, or other damage or
reexamination or reissue proceedings as are reasonable to protect any of the
Intellectual Property except those which do not in the good faith business
judgment of Assignor warrant such action. However, no such suit, proceeding or
other action shall be settled or voluntarily dismissed, nor shall any party be
released or excused of any
                                       6
<PAGE>

claims of, or liability for, infringement, without the prior written consent of
Assignee, which consent shall not be unreasonably withheld. Assignee shall
provide all reasonable and necessary cooperation in connection with any such
suit, proceeding or action, including without limitation, joining as a necessary
party.

               Assignor hereby agrees to indemnify and hold harmless the
Assignee for any and all liabilities, obligations, losses, damages, penalties,
actions, judgments, suits, costs and reasonable expenses (including reasonable
attorneys' fees) of any kind whatsoever which may be imposed on, incurred by or
asserted against Assignee in connection with or in any way arising out of any
suits, proceedings or other actions relating to any or all the Intellectual
Property, whether brought by Assignor or any other person or entity, including
without limitation, suits, proceedings or other actions in which an allegation
of the liability, strict or otherwise, is or may be made by any person or entity
who alleges or may allege having suffered damages as a consequence of alleged
improper, imprudent, reckless, negligent, willful, faulty, defective or
substandard design, testing, specification, manufacturing supervision,
manufacturing defect, manufacturing deficiency, publicity or advertisement, or
improper use, howsoever arising or by whomsoever caused, of any inventions
disclosed and claimed in the Intellectual Property or any of them; provided,
however, that Assignor shall not be liable to Assignee for any liabilities,
obligations, losses, damages, penalties, actions, judgments, suits, costs or
expenses attributable to the gross negligence or willful misconduct of Assignee,
as the case may be.

               9. License to Assignor. Unless and until there shall have
occurred and be continuing a Default, Assignee hereby grants to Assignor the
exclusive right and license under the Intellectual Property to make, have made
for it, use and sell the inventions disclosed and claimed in the Intellectual
Property, and otherwise use the Intellectual Property, for Assignor's own
benefit and account to grant sublicenses under the license granted to Assignor
under this Section 9 which are granted in the ordinary course of Assignor's
business. Assignor agrees not to otherwise sell or assign or in any way transfer
its interest in, or grant any sublicense under, the license granted to Assignor
under this Section 9, without the prior written consent of Assignee, which
consent shall not be unreasonably withheld.

               10. Remedies. Upon the occurrence and during the continuation of
a Default, Assignor's license under the Patents as set forth in Section 9 shall
terminate forthwith and Assignee shall have the sole right but shall in no way
be obligated to bring suit to enforce the Patents and any license thereunder, in
which event Assignor shall at the request of Assignee do any and all lawful acts
and execute any and all proper documents required by Assignee in aid of such
enforcement. Assignor shall promptly, upon demand, reimburse and indemnify
Assignee for all costs and


                                       7
<PAGE>

expenses incurred by Assignee in the reasonable exercise of its rights referred
to or specified in this Section 10.

               11. Amendments, etc. No amendment or waiver of any provision of
this Assignment nor consent to any departure by the Assignor herefrom, shall in
any event be effective unless the same shall be in writing and signed by the
parties hereto, and then such waiver or consent shall be effective only in the
specific instance and for the specific purpose for which given, except as
provided in Section 5(o), in which case the writing need only be signed by
Assignee.

               12. Address for Notices. All notices, requests, demands and other
communications provided for hereunder shall be in writing (including telecopier,
telegraphic, telex or cable communication) and shall be sent by mail (by
registered or certified mail, return receipt requested), telecopier, telegraph,
telex, cable or hand delivery:

               (a) If to Assignor, to it at the address set forth above, or at
          such other address as shall be designated by it in a written notice to
          the Assignee complying as to delivery with the terms of this Section;
          and

               (b) If to the Assignee to Chatterjee Management Company, 888
          Seventh Avenue - Suite 3000, New York, NY 10106, Attn.: legal counsel,
          or at such other address as shall be designated by the Assignee in a
          written notice to Assignor complying as to delivery with the terms of
          this Section;

All such notices,  requests, demands and other communications shall be effective
(a) when mailed, on the earlier of receipt or the third business day after being
deposited in the mails with postage  prepaid,  (b) when  telegraphed  or cabled,
immediately  when delivered to the telegraph  company or the cable company,  (c)
when sent by telex, upon confirmation by telex answerback, and (d) upon personal
delivery  thereof.  All notices,  communications  and other documents  delivered
hereunder shall,  unless submitted in the English language,  be accompanied by a
certified English translation thereof.

               13. Continuing Assignment; Transfer of Notes. This Assignment
shall create a continuing assignment of the Intellectual Property and shall (a)
remain in full force and effect until payment in full of the Obligations, (b) be
binding upon Assignor, its successors and assigns and (c) inure to the benefit
of Assignee, its successors, transferees and assigns. Upon the payment in full
of the Obligations, the assignment hereunder shall terminate and all rights to
the Intellectual Property shall revert to Assignor, subject to any disposition
thereof which may have been made by Assignee pursuant hereto. Upon any such
termination, Assignee will, at Assignor's expense,


                                       8
<PAGE>


execute and deliver to Assignor such documents as Assignor shall reasonably
request to evidence such termination.

               14. Cumulative Remedies. All of the Assignee's rights and
remedies with respect to the Intellectual Property, or by any other agreements
or by law shall be cumulative and may be exercised singularly or concurrently.
Assignor hereby acknowledges and agrees that this Assignment is not intended to
limit or restrict in any way the rights and remedies of the Assignee but rather
is intended to facilitate the exercise of such rights and remedies.

               15. Attorney of Record. Assignor and Assignee hereby designate
Assignor's counsel, Bronson, Bronson & McKinnon. Assignor shall cause such
attorney of record to send a copy of any notices received from the Patent and
Trademark Office relating to any of the Intellectual Property to the Assignee
promptly after receipt thereof.

               16. Counterparts. This Assignment may be executed in any number
of counterparts, each of which when so executed and delivered shall be deemed an
original, but all such counterparts together shall constitute but one and the
same instrument.

               17. Severability. The provisions of this Assignment are
severable, and if any clause or provision shall be held invalid or unenforceable
in whole or in part in any jurisdiction, then such invalidity or
unenforceability shall affect only such clause or provision, or part thereof, in
such jurisdiction, and shall not in any manner affect such clause or provision
in any other jurisdiction, or any other clause or provision of this Assignment
in any jurisdiction.

               18. Waiver of Jury Trial. The Assignor hereby irrevocably waives
all right to trial by jury in any action, proceeding or counterclaim arising out
of or relating to this Agreement or the Note.

               19. Governing Law; Terms. This Assignment shall be governed by
and construed in accordance with the laws of the State of New York.



                                       9
<PAGE>





               IN WITNESS WHEREOF, the parties hereto have caused this
Assignment to be executed by their respective officers thereunder duly
authorized, as of the date first above written.


                                          AMATI COMMUNICATIONS CORPORATION


                                          By:/s/ Ronald Carlini
                                             Name: Ronald Carlini
                                             Title: VP - Corporate Development

Agreed and Accepted this 19th
day of September, 1996:


CHATTERJEE MANAGEMENT COMPANY


By:/s/ Peter Hurwitz
   Name: Peter Hurwitz
   Title: Vice President


<PAGE>





STATE OF CA          )
                     ) ss.:
COUNTY OF Santa Clara)


               The foregoing Collateral Assignment and Security Agreement was
executed and acknowledged before me this 19 day of September, 1996, by
Ronald Carlini  personally known to me to be the VP Corp Development of Amati
Communications Corporation, a Delaware corporation.


(SEAL)

                                   /s/ Lalo Valdez
                                   Notary Public
                                   My Commission expires:
                                                 April 23 2000


<PAGE>





                  Collateral Assignment and Security Agreement

                                   Schedule A


1.  Patents -- See list attached as Annex I.

2.  Other Intellectual Property -- See list Attached as Annex II.














                                   Schedule B
                                    Licenses



1.  License Agreement with Motorola MOS Digital Analog IC Division dated
    March 2, 1995.

2.  License Agreement with Northern Telecom Ltd. dated May 10, 1995.


<PAGE>1


                                                        SCHEDULE A
<TABLE>
<CAPTION>

                                                                                                              File Date or Issue
Patent No. or Serial No.        Title                                              Inventor                         Date
- ------------------------        -----                                              --------                   ------------------
<S>                    <C>                                                   <C>                           <C>

        5,400,322            Updating of Bit Allocations in a Multicarrier      Ronald Hunt and Peter Chow     3/21/95
                             Modulation Transmission System

       08/107/200            Multicarrier Modulation Transmission System with   John Cioffi, Po Tong, James    8/17/93
                             Variable Delay                                     Aslanis, A.H. Gooch

       08/165,509            Mitigating Clippings and Quantization Effects in   Jacky Chow, J. Bingham,        12/13/93
                             Digital Transmission Systems                       M. Flowers, J. Cioffi

       08/275,409            Frame Synchronization in Multicarrier              James Aslanis and Jacky Chow   7/15/94
                             Transmission Systems

    Filed/Pending            Efficient Address Generation for Convolutional     Po Tong                        3/29/96
                             Interleaving Using Minimal Amount of Memory

    Filed/Pending            Interpolated and Dithering Method used for         Mark Flowers, Michael Agah     6/-/96
                             reducing required ADS prevision in ADSL            and John Bingham
                             echo-canceled DMT

   PCT/US94/10170            Digital Sound Broadcasting Using a Dedicated       John M. Cioffi, John A.C.      9/10/93
                             Control Channel                                    Bingham and Mark P. Mallory

        5,519,731            ADSL Compatible Discrete Multitone Apparatus for   John M. Cioffi                 5/21/96
                             Mitigation of TI Noise

       08/252,829            Discrete Multitone Data Transmission System        John M. Cioffi                 6/2/94
                             Using an Overhead Bus for Synchronizing Multiple
                             Remote Units

       08/396,132            Method and Apparatuses for Establishing            J.A.C. Bingham and K.          1/20/95
                             Communication in a Multi-toned Data Transmission   Jacobsen
                             System

   PCT/US95/07035            Method and Apparatuses for Coordinating            J.M. Cioffi, J.A.C. Bingham    2/6/95
                             Multipoint Communication in a Multitone Data       and K. Jacobsen
                             Transmission System

          Pending            Radio Frequency Noise Canceller                    John M. Cioffi, J. Bingham     4/19/96
                                                                                and M.P. Mallory
          Pending            Mitigating RF Interference in                      J. Bingham                     4/19/96
                             Discrete-Multi-Carrier Transmission Systems

          Pending            Power Multiplier for Complex Numbers               Debu Pal                       3/29/96


</TABLE>







<PAGE>


                        AMATI COMMUNICATIONS CORPORATION

                          REGISTRATION RIGHTS AGREEMENT


               REGISTRATION RIGHTS AGREEMENT, dated as of October 3, 1996, among
the investors listed on the signature pages hereto (the "Investors") and Amati
Communications Corporation, a Delaware corporation (the "Company").

                                 R E C I T A L S

               WHEREAS, the Investors have, pursuant to the terms of the
Investment Agreement, dated as of the date hereof, by and among the Company and
the Investors (the "Agreement"), agreed to purchase shares of Common Stock, par
value $0.20 per share, of the Company (the "Common Stock") and Warrants to
purchase shares of Common Stock; and

               WHEREAS, the Company has agreed, as a condition precedent to the
Investors' obligations under the Agreement, to grant the Investors certain
registration rights; and

               WHEREAS, the Company and the Investors desire to define the
registration rights of the Investors on the terms and subject to the conditions
set forth herein and in Section 1.6 of the Agreement.

               NOW, THEREFORE, in consideration of the foregoing premises and
for other good and valuable consideration, the parties hereby agree as follows:

               1. DEFINITIONS

               As used in this Agreement, the following terms have the
respective meaning set forth below:

               Commission: shall mean the Securities and Exchange Commission or
any other federal agency at the time administering the Securities Act;

               Exchange Act: shall mean the Securities Exchange Act of 1934, as
amended;

               Holder: shall mean any holder of Registrable Securities;

               Initiating Holder: shall mean any Holder or Holders who in the
aggregate are Holders of more than 50% of the then outstanding Registrable
Securities;


<PAGE>


               Person: shall mean an individual, partnership, joint-stock
company, corporation, trust or unincorporated organization, and a government or
agency or political subdivision thereof;

               register, registered and registration: shall mean to a
registration effected by preparing and filing a registration statement in
compliance with the Securities Act (and any post-effective amendments filed or
required to be filed) and the declaration or ordering of effectiveness of such
registration statement;

               Registrable Securities: shall mean (A) shares of Common Stock
issued or issuable under the Agreement, (B) any additional shares of Common
Stock acquired by the Investors pursuant to the Warrants and (C) any stock of
the Company issued as a dividend or other distribution with respect to, or in
exchange for or in replacement of, the shares of Common Stock referred to in
clause (A) or (B);

               Registration Expenses: shall mean all expenses incurred by the
Company in compliance with Sections 2(a) and (b) hereof, including, without
limitation, all registration and filing fees, printing expenses, fees and
disbursements of counsel for the Company, fees and expenses of one counsel for
all the Holders, blue sky fees and expenses and the expense of any special
audits incident to or required by any such registration (but excluding the
compensation of regular employees of the Company, which shall be paid in any
event by the Company);

               Security, Securities: shall have the meaning set forth in Section
2(1) of the Securities Act;

               Securities Act: shall mean the Securities Act of 1933, as
amended; and

               Selling Expenses: shall mean all underwriting discounts and
selling commissions applicable to the sale of Registrable Securities.

               2. REGISTRATION RIGHTS

               (a) Requested Registration.

               (i) Request for Registration. If the Company shall receive from
          an Initiating Holder, at any time following the time that the shelf
          registration statements filed by the Company pursuant to Section 1.6
          under the Agreement (a "Shelf Registration Statement") are no longer
          in effect with respect to all of the Registrable Securities, a written
          request that the Company effect any registration covering the
          registration of 20% or more of the Registrable Securities (or such
          lesser percent which (I) the Company then owns or (II) results in an
          anticipated aggregate offering price of $1,000,000 or more), the
          Company will:



                                       2
<PAGE>


                    (A) promptly give written notice of the proposed
               registration, qualification or compliance to all other Holders;
               and

                    (B) as soon as practicable, use its diligent best efforts to
               effect such registration (including, without limitation, the
               execution of an undertaking to file post-effective amendments,
               appropriate qualification under applicable blue sky or other
               state securities laws and appropriate compliance with applicable
               regulations issued under the Securities Act) as may be so
               requested and as would permit or facilitate the sale and
               distribution of all or such portion of such Registrable
               Securities as are specified in such request, together with all or
               such portion of the Registrable Securities of any Holder or
               Holders joining in such request as are specified in a written
               request received by the Company within 10 business days after
               written notice from the Company is given under Section 2(a)(i)(A)
               above; provided that the Company shall not be obligated to
               effect, or take any action to effect, any such registration
               pursuant to this Section 2(a):

                         (x) In any particular jurisdiction in which the Company
                    would be required to execute a general consent to service of
                    process in effecting such registration, qualification or
                    compliance, unless the Company is already subject to service
                    in such jurisdiction and except as may be required by the
                    Securities Act or applicable rules or regulations
                    thereunder; or

                         (y) After the Company has effected three (3) such
                    registrations pursuant to this Section 2(a) and such
                    registrations have been declared or ordered effective and
                    the Company has satisfied its obligations under Section 2(d)
                    hereof.

               The registration statement filed pursuant to the request of the
Initiating Holders may not include other securities of the Company which are
held by Persons other than the Holders ("Other Stockholders"), without the prior
consent of Holders registering at least 50% of the Registrable Securities.

               (ii) Underwriting. If the Initiating Holder intends to distribute
          the Registrable Securities covered by its request by means of an
          underwriting, it shall so advise the Company as a part of its request
          made pursuant to this Section 2(a), and the Company shall include such
          information in the written notice referred to in Section 2(a)(i)(A).
          In such event, the right of any Holder to include its Registrable
          Securities in such registration shall be conditioned upon such
          Holder's participation in such underwriting and the inclusion of such
          Holder's Registrable Securities in the underwriting to the extent
          provided


                                       3
<PAGE>

          herein. All Holders proposing to distribute their securities
          through such underwriting shall enter into an underwriting agreement
          in customary form with the underwriter or underwriters selected for
          such underwriting by a majority in interest of the Initiating Holder.

               (iii) Company's Right to Defer. Notwithstanding the foregoing, if
          the Company shall furnish to the Initiating Holder a certificate
          signed by the President of the Company stating that, in the good faith
          judgment of the Board of Directors of the Company, it would be
          seriously detrimental to the Company and its shareholders for such
          registration statement to be filed in the near future and it is
          therefore essential to defer the filing of such registration
          statement, the Company shall have the right to defer such filing for a
          period of not more than 30 calendar days after receipt of the request
          of the Initiating Holder (a "Suspension Period"); provided that no
          Suspension Period may commence less than ninety (90) days after the
          expiration of the then most recent Suspension Period, and the Company
          may establish no more than two (2) Suspension Periods in any twelve
          (12) consecutive months.

               (iv) Transfer of Rights. The registration rights set forth in
          this Section 2 may be transferred or assigned to a transferee or
          assignee of any Registrable Securities not sold to the public
          acquiring at least 10,000 shares of Registrable Securities, equitably
          adjusted for any recapitalization, stock split, combination and the
          like (hereinafter referred to in this Section 2 as the "Transferee");
          provided, however, that:

                    (A) the Company must receive written notice prior to the
               time of said transfer, stating the name and address of the
               Transferee and identifying the securities with respect to which
               such registration rights are being transferred or assigned, and

                    (B) the Transferee must not be a person deemed by the Board
               of Directors of the Company, in good faith, to be a competitor or
               potential competitor of the Company.

               Notwithstanding the limitation set forth in the foregoing
          sentence respecting the minimum number of shares which must be
          transferred, any Holder which is a partnership or limited liability
          company may transfer such Holder's registration rights to such
          Holder's constituent partners or members without restriction as to the
          number or percentage of shares acquired by any such constituent
          partner or member.

               (b) Company Registration.

               (i) If the Company shall determine to register any of its equity
          securities either for its own account or


                                       4
<PAGE>

          for the account of Other Stockholders, other than a registration
          relating solely to employee benefit plans, or a registration relating
          solely to a Commission Rule 145 transaction, or a registration on any
          registration form which does not permit secondary sales or does not
          include substantially the same information as would be required to be
          included in a registration statement covering the sale of Registrable
          Securities, the Company will:

                    (A) promptly give to each of the Holders a written notice
               thereof (which shall include a list of the jurisdictions in which
               the Company intends to attempt to qualify such securities under
               the applicable blue sky or other state securities laws); and

                    (B) include in such registration (and any related
               qualification under blue sky laws or other compliance), and in
               any underwriting involved therein, all the Registrable Securities
               specified in a written request or requests, made by the Holders
               within fifteen (15) days after receipt of the written notice from
               the Company described in clause (i) above, except as set forth in
               Section 2(b)(ii) below. Such written request may specify all or a
               part of the Holders' Registrable Securities.

               (ii) Underwriting. If the registration of which the Company gives
          notice is for a registered public offering involving an underwriting,
          the Company shall so advise each of the Holders as a part of the
          written notice given pursuant to Section 2(b)(i)(A). In such event,
          the right of each of the Holders to registration pursuant to this
          Section 2(b) shall be conditioned upon such Holders' participation in
          such underwriting and the inclusion of such Holders' Registrable
          Securities in the underwriting to the extent provided herein. The
          Holders whose shares are to be included in such registration shall
          (together with the Company and the Other Stockholders distributing
          their securities through such underwriting) enter into an underwriting
          agreement in customary form with the representative of the underwriter
          or underwriters selected for underwriting by the Company.
          Notwithstanding any other provision of this Section 2(b), if the
          representative determines that marketing factors require a limitation
          on the number of shares to be underwritten, the representative may
          (subject to the allocation priority set forth below) limit the number
          of Registrable Securities to be included in the registration and
          underwriting to not less than twenty five percent (25%) (or ten
          percent (10%) with respect to the first registered offering effected
          by the Company after the date hereof) of the shares included therein
          (based on the number of shares). The Company shall so advise all
          holders of securities requesting registration, and the number of
          shares of securities that are entitled to be included in the
          registration and underwriting shall be allocated in the following
          manner: The securities of the Company held by officers, directors and
          Other Stockholders of the Company


                                       5
<PAGE>

          (other than Registrable Securities and other than securities held by
          holders who by contractual right demanded such registration
          ("Demanding Holders")) shall be excluded from such registration and
          underwriting to the extent required by such limitation, and, if a
          limitation on the number of shares is still required, the number of
          shares that may be included in the registration and underwriting by
          each of the Holders and Demanding Holders shall be reduced, on a pro
          rata basis (based on the number of shares held by such Holder), by
          such minimum number of shares as is necessary to comply with such
          limitation. If any of the Holders or any officer, director or Other
          Stockholder disapproves of the terms of any such underwriting, he may
          elect to withdraw therefrom by written notice to the Company and the
          underwriter. Any Registrable Securities or other securities excluded
          or withdrawn from such underwriting shall be withdrawn from such
          registration.

               (c) Expenses of Registration. All Registration Expenses incurred
in connection with any registration, qualification or compliance pursuant to
this Section 2 shall be borne by the Company, and all Selling Expenses shall be
borne by the Holders of the securities so registered pro rata on the basis of
the number of their shares so registered; provided, however, that if, as a
result of the withdrawal of a request for registration by any of the Holders, as
applicable, the registration statement does not become effective, the Holders
and Other Stockholders requesting registration may elect to bear the
Registration Expenses (pro rata on the basis of the number of their shares so
included in the registration request, or on such other basis as such Holders and
Other Stockholders may agree), in which case such registration shall not be
counted as a registration pursuant to Section 2(a)(i)(B)(y).

               (d) Registration Procedures. In the case of each registration
effected by the Company pursuant to this Section 2, the Company will keep the
Holders, as applicable, advised in writing as to the initiation of each
registration and as to the completion thereof. At its expense, the Company will:

               (i) keep such registration effective for a period of one hundred
          twenty (120) days or until the Holders, as applicable, have completed
          the distribution described in the registration statement relating
          thereto, whichever first occurs; provided, however, that such 120-day
          period shall be extended for a period of time equal to the period
          during which the Holders, as applicable, refrain from selling any
          securities included in such registration during a Suspension Period in
          accordance with provisions in Section 1.6(b)(iv) of the Agreement; and

              (ii) furnish such number of prospectuses and other documents
          incident thereto as each of the Holders, as applicable, from time to
          time may reasonably request.

               (e) Indemnification.



                                       6
<PAGE>

               (i) The Company will indemnify each of the Holders, as
          applicable, each of its officers, directors and partners, and each
          person controlling each of the Holders, with respect to each
          registration which has been effected pursuant to this Section 2 or
          pursuant to Section 1.6 of the Agreement, and each underwriter, if
          any, and each person who controls any underwriter, against all claims,
          losses, damages and liabilities (or actions in respect thereof)
          arising out of or based on any untrue statement (or alleged untrue
          statement) of a material fact contained in any prospectus, offering
          circular or other document (including any related registration
          statement, notification or the like) incident to any such
          registration, qualification or compliance, or based on any omission
          (or alleged omission) to state therein a material fact required to be
          stated therein or necessary to make the statements therein not
          misleading, or any violation by the Company of the Securities Act or
          the Exchange Act or any rule or regulation thereunder applicable to
          the Company and relating to action or inaction required of the Company
          in connection with any such registration, qualification or compliance,
          and will reimburse each of the Holders, each of its officers,
          directors and partners, and each person controlling each of the
          Holders, each such underwriter and each person who controls any such
          underwriter, for any legal and any other expenses reasonably incurred
          in connection with investigating and defending any such claim, loss,
          damage, liability or action, provided that the Company will not be
          liable in any such case to the extent that any such claim, loss,
          damage, liability or expense arises out of or is based on any untrue
          statement or omission based upon written information furnished to the
          Company by the Holders or underwriter and stated to be specifically
          for use therein.

               (ii) Each of the Holders will, if Registrable Securities held by
          it are included in the securities as to which such registration,
          qualification or compliance is being effected, indemnify the Company,
          each of its directors and officers and each underwriter, if any, of
          the Company's securities covered by such a registration statement,
          each person who controls the Company or such underwriter, each Other
          Stockholder and each of their officers, directors, and partners, and
          each person controlling such Other Stockholder against all claims,
          losses, damages and liabilities (or actions in respect thereof)
          arising out of or based on any untrue statement (or alleged untrue
          statement) of a material fact contained in any such registration
          statement, prospectus, offering circular or other document made by
          such Holder, or any omission (or alleged omission) to state therein a
          material fact required to be stated therein or necessary to make the
          statements by such Holder therein not misleading, and will reimburse
          the Company and such Other Stockholders, directors, officers,
          partners, persons, underwriters or control persons for any legal or
          any other expenses reasonably incurred in connection with

                                       7
<PAGE>

          investigating or defending any such claim, loss, damage, liability or
          action, in each case to the extent, but only to the extent, that such
          untrue statement (or alleged untrue statement) or omission (or alleged
          omission) is made in such registration statement, prospectus, offering
          circular or other document in reliance upon and in conformity with
          written information furnished to the Company by such Holder and stated
          to be specifically for use therein; provided, however, that the
          obligations of each of the Holders hereunder shall be limited to an
          amount equal to the net proceeds to such Holder of securities sold as
          contemplated herein.

               (iii) Each party entitled to indemnification under this Section
          2(e) (the "Indemnified Party") shall give notice to the party required
          to provide indemnification (the "Indemnifying Party") promptly after
          such Indemnified Party has actual knowledge of any claim as to which
          indemnity may be sought, and shall permit the Indemnifying Party to
          assume the defense of any such claim or any litigation resulting
          therefrom; provided that counsel for the Indemnifying Party, who shall
          conduct the defense of such claim or any litigation resulting
          therefrom, shall be approved by the Indemnified Party (whose approval
          shall not unreasonably be withheld) and the Indemnified Party may
          participate in such defense at such party's expense (unless the
          Indemnified Party shall have reasonably concluded that there may be a
          conflict of interest between the Indemnifying Party and the
          Indemnified Party in such action, in which case the fees and expenses
          of counsel shall be at the expense of the Indemnifying Party), and
          provided further that the failure of any Indemnified Party to give
          notice as provided herein shall not relieve the Indemnifying Party of
          its obligations under this Section 2 unless the Indemnifying Party is
          materially prejudiced thereby. No Indemnifying Party, in the defense
          of any such claim or litigation shall, except with the consent of each
          Indemnified Party, consent to entry of any judgment or enter into any
          settlement which does not include as an unconditional term thereof the
          giving by the claimant or plaintiff to such Indemnified Party of a
          release from all liability in respect to such claim or litigation.
          Each Indemnified Party shall furnish such information regarding itself
          or the claim in question as an Indemnifying Party may reasonably
          request in writing and as shall be reasonably required in connection
          with the defense of such claim and litigation resulting therefrom.

               (iv) If the indemnification provided for in this Section 2(e) is
          held by a court of competent jurisdiction to be unavailable to an
          Indemnified Party with respect to any loss, liability, claim, damage
          or expense referred to herein, then the Indemnifying Party, in lieu of
          indemnifying such Indemnified Party hereunder, shall contribute to the
          amount paid or payable by such Indemnified Party as a result of such
          loss, liability, claim, damage or expense in such proportion as is
          appropriate to reflect the relative fault


                                       8
<PAGE>

          of the Indemnifying Party on the one hand and of the Indemnified Party
          on the other in connection with the statements or omissions which
          resulted in such loss, liability, claim, damage or expense, as well as
          any other relevant equitable considerations. The relative fault of the
          Indemnifying Party and of the Indemnified Party shall be determined by
          reference to, among other things, whether the untrue (or alleged
          untrue) statement of a material fact or the omission (or alleged
          omission) to state a material fact relates to information supplied by
          the Indemnifying Party or by the Indemnified Party and the parties'
          relative intent, knowledge, access to information and opportunity to
          correct or prevent such statement or omission.

               (v) Notwithstanding the foregoing, to the extent that the
          provisions on indemnification and contribution contained in the
          underwriting agreement entered into in connection with any
          underwritten public offering contemplated by this Agreement are in
          conflict with the foregoing provisions, the provisions in such
          underwriting agreement shall be controlling.

               (vi) The foregoing indemnity agreement of the Company and Holders
          is subject to the condition that, insofar as they relate to any loss,
          claim, liability or damage made in a preliminary prospectus but
          eliminated or remedied in the amended prospectus on file with the
          Commission at the time the registration statement in question becomes
          effective or the amended prospectus filed with the Commission pursuant
          to Commission Rule 424(b) (the "Final Prospectus"), such indemnity or
          contribution agreement shall not inure to the benefit of any
          underwriter or Holder if a copy of the Final Prospectus was furnished
          to the underwriter and was not furnished to the person asserting the
          loss, liability, claim or damage at or prior to the time such action
          is required by the Securities Act.

                 (f) Information by the Holders. It shall be a condition
precedent to the Company's obligation to file any registration statement
pursuant to this Registration Rights Agreement that each of the Holders
holding securities included in any registration shall furnish to the Company
such information regarding such Holder and the distribution proposed by such
Holder as the Company may reasonably request in writing and as shall be
reasonably required in connection with any registration, qualification or
compliance referred to in this Section 2 or Section 1.6 of the Agreement.

               (g) Rule 144 Reporting.

               With a view to making available the benefits of certain rules and
regulations of the Commission which may permit the sale of restricted securities
to the public without registration, the Company agrees to:



                                       9
<PAGE>

               (i) make and keep public information available as those terms are
          understood and defined in Rule 144 under the Securities Act ("Rule
          144"), at all times from and after ninety (90) days following the
          effective date of the first registration under the Securities Act
          filed by the Company for an offering of its securities to the general
          public;

               (ii) use its best efforts to file with the Commission in a timely
          manner all reports and other documents required of the Company under
          the Securities Act and the Exchange Act at any time after it has
          become subject to such reporting requirements; and

               (iii) so long as the Holder owns any Registrable Securities,
          furnish to the Holder upon request, a written statement by the Company
          as to its compliance with the reporting requirements of Rule 144 (at
          any time from and after ninety (90) days following the effective date
          of the first registration statement filed by the Company for an
          offering of its securities to the general public), and of the
          Securities Act and the Exchange Act (at any time after it has become
          subject to such reporting requirements), a copy of the most recent
          annual or quarterly report of the Company, and such other reports and
          documents so filed as the Holder may reasonably request in availing
          itself of any rule or regulation of the Commission allowing the Holder
          to sell any such securities without registration.

               (h) Termination. The registration rights set forth in this
Section 2 shall not be available to any Holder if, in the opinion of counsel to
the Company, all of the Registrable Securities then owned by such Holder could
be sold in any 90-day period pursuant to Rule 144.

               3. INTERPRETATION OF THIS AGREEMENT

               (a) Directly or Indirectly. Where any provision in this Agreement
refers to action to be taken by any Person, or which such Person is prohibited
from taking, such provision shall be applicable whether such action is taken
directly or indirectly by such Person.

               (b) Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware applicable to
contracts made and to be performed entirely within such State.

               (c) Section Headings. The headings of the sections and
subsections of this Agreement are inserted for convenience only and shall not be
deemed to constitute a part thereof.

               4. MISCELLANEOUS

               (a) Notices.



                                       10
<PAGE>

               (i) All communications under this Agreement shall be in writing
          and shall be delivered by hand or mailed by overnight courier or by
          registered or certified mail, postage prepaid:

                    (A) if to the Company, at the address set forth in the
               Agreement, or at such other address as it may have furnished in
               writing to the Investors;

                    (B) if to the Investors, at the address set forth in the
               Agreement or at such other address as may have been furnished to
               the Company in writing.

               (ii) Any notice so addressed shall be deemed to be given: if
          delivered by hand, on the date of such delivery; if mailed by courier,
          on the first business day following the date of such mailing; and if
          mailed by registered or certified mail, on the third business day
          after the date of such mailing.

               (b) Reproduction of Documents. This Agreement and all documents
relating thereto, including, without limitation, any consents, waivers and
modifications which may hereafter be executed may be reproduced by the Investor
by any photographic, photostatic, microfilm, microcard, miniature photographic
or other similar process and the Investors may destroy any original document so
reproduced. The parties hereto agree and stipulate that any such reproduction
shall be admissible in evidence as the original itself in any judicial or
administrative proceeding (whether or not the original is in existence and
whether or not such reproduction was made by the Investors in the regular course
of business) and that any enlargement, facsimile or further reproduction of such
reproduction shall likewise be admissible in evidence.

               (c) Successors and Assigns. This Agreement shall inure to the
benefit of and be binding upon the successors and assigns of each of the
parties.

               (d) Entire Agreement; Amendment and Waiver. This Agreement, the
Investment Agreement and the Warrants constitute the entire understanding of the
parties hereto and supersedes all prior understanding among such parties with
respect to the subject matter hereof. This Agreement may be amended, and the
observance of any term of this Agreement may be waived, with (and only with) the
written consent of the Company and the Investors holding a majority of the then
outstanding Registrable Securities.

               (e) Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original and all of which
together shall be considered one and the same agreement.


                                       11
<PAGE>


               IN WITNESS WHEREOF, the undersigned have executed this Agreement
as of the date first set forth above.

                                     AMATI COMMUNICATIONS CORPORATION


                                     By:/s/ James Steenbergen
                                        Name: James Steenbergen
                                        Title: President, CEO, CFO
                                        Date: October 3, 1996

                                     INVESTORS:
                                     QUANTUM INDUSTRIAL PARTNERS LDC


                                     By:/s/ Sean C. Warren
                                        Name: Sean C. Warren
                                        Title: Attorney-in-Fact



                                     S-C PHOENIX HOLDINGS, L.L.C.

                                     By:/s/ Sean C. Warren
                                        Name:  Sean C. Warren
                                        Title: Manager


                                     WINSTON PARTNERS, L.P.

                                     By: Chatterjee Fund Management,
                                         its general partner

                                         By:/s/ Peter Hurwitz
                                            Name:
                                            Title:


                                    WINSTON PARTNERS II LDC

                                     By:/s/ Peter Hurwitz
                                        Name:
                                        Title:


                                    WINSTON PARTNERS II L.L.C.


                                    By: Chatterjee Fund Management,
                                         its general partner

                                         By:/s/ Peter Hurwitz
                                            Name:
                                            Title:


                                       12




<PAGE>1
                                                                    EXHIBIT F

                         QUANTUM INDUSTRIAL PARTNERS LDC
                                POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENT, that the undersigned QUANTUM INDUSTRIAL PARTNERS
LDC (the "Company"), an exempted limited duration company existing and operating
under the laws of the Cayman Islands does, pursuant to a duly adopted resolution
of its Managing Director, hereby designate, constitute and appoint:

                  GARY GLADSTEIN, SEAN WARREN and MICHAEL NEUS

acting, singly and not jointly, as its true and lawful agent and attorney in
fact for the purpose of executing in its name, all documents, certificates,
instruments, statements, filings and agreements ("documents") to be filed with
or delivered to any foreign or domestic governmental or regulatory body or
required or requested by any other person or entity pursuant to any legal or
regulatory requirement relating to the acquisition, ownership, management or
disposition of securities or other investments, and any other documents relating
or ancillary thereto, including but not limited to, all documents relating to
filings with the United States Securities and Exchange Commission (the "SEC")
pursuant to the Securities Act of 1933 or the Securities Exchange Act of 1934
(the "Act") and the rules and regulations promulgated thereunder, including: (1)
all documents relating to the beneficial ownership of securities required to be
filed with the SEC pursuant to Section 13(d) or Section 16(a) of the Act
including, without limitation: (a) any acquisition statements on Schedule 13D or
Schedule 13G and any amendments thereto, (b) any joint filing agreements
pursuant to Rule 13d-1(f) and (c) any initial statements of, or statements of
changes in, beneficial ownership of securities on Form 3, Form 4 or Form 5 and
(2) any information statements on Form 13F required to be filed with the SEC
pursuant to Section 13(f) of the Act.

Each attorney-in-fact is hereby authorized and empowered to perform all other
acts and deeds, which he or she in his or her sole discretion deems necessary or
appropriate to carry out to the fullest extent the terms and the intent of the
foregoing. All prior acts of each attorney-in-fact in furtherance of the
foregoing are hereby ratified and confirmed.

IN WITNESS WHEREOF, the Company has caused this document to be executed this
23rd day of May, 1966.

                                         QUANTUM INDUSTRIAL PARTNERS LDC



                                    /s/ Mr. G. St. Jago  /s/ Mr. A.P. de Groot
                                  ---------------------------------------------
                                       Curacao Corporation Company N.V.
                                              Managing Director




<PAGE>




                                                                EXHIBIT G

                                POWER OF ATTORNEY



KNOW ALL MEN BY THESE PRESENT, that the undersigned, Winston Partners, L.P. (the
"Company"), a Delaware limited partnership, hereby makes, constitutes and
appoints PETER A. HURWITZ as the Company's agent and attorney in fact for the
purpose of executing on behalf of the Company, all documents, certificates,
instruments, statements, filings and agreements ("documents") to be filed with
or delivered to any foreign or domestic governmental or regulatory body or
required or requested by any other person or entity pursuant to any legal or
regulatory requirement relating to the acquisition, ownership, management or
disposition of securities or other investments, and any other documents relating
or ancillary thereto, including but not limited to, all documents relating to
filings with the United States Securities and Exchange Commission (the "SEC")
pursuant to the Securities Act of 1933 or the Securities Exchange Act of 1934
(the "Act") and the rules and regulations promulgated thereunder, including: (1)
all documents relating to the beneficial ownership of securities required to be
filed with the SEC pursuant to Section 13(d) or Section 16(a) of the Act
including, without limitation: (a) any acquisition statements on Schedule 13D or
Schedule 13G and any amendments thereto, (b) any joint filing agreements
pursuant to Rule 13d-1(f) and (c) any initial statements of, or statements of
changes in, beneficial ownership of securities on Form 3, Form 4 or Form 5 and
(2) any information statements on Form 13F required to be filed with the SEC
pursuant to Section 13(f) of the Act.

All past acts of the attorney-in-fact in furtherance of the foregoing are hereby
ratified and confirmed.

This power of attorney shall be valid from the date hereof until revoked by the
Company.

IN WITNESS WHEREOF, the Company has executed this instrument this 25th day of
October, 1996.

                                        WINSTON PARTNERS, L.P.

                                        By: Chatterjee Fund Management, L.P.,
                                            its general partner


                                        By: /s/ Purnendu Chatterjee
                                             Name: Purnendu Chatterjee
                                             Title: General Partner



<PAGE>




                                                             EXHIBIT H

                                POWER OF ATTORNEY



KNOW ALL MEN BY THESE PRESENT, that the undersigned, Winston Partners II LDC
(the "Company"), a Cayman Islands exempted limited duration company, hereby
makes, constitutes and appoints PETER A. HURWITZ as the Company's agent and
attorney in fact for the purpose of executing on behalf of the Company, all
documents, certificates, instruments, statements, filings and agreements
("documents") to be filed with or delivered to any foreign or domestic
governmental or regulatory body or required or requested by any other person or
entity pursuant to any legal or regulatory requirement relating to the
acquisition, ownership, management or disposition of securities or other
investments, and any other documents relating or ancillary thereto, including
but not limited to, all documents relating to filings with the United States
Securities and Exchange Commission (the "SEC") pursuant to the Securities Act of
1933 or the Securities Exchange Act of 1934 (the "Act") and the rules and
regulations promulgated thereunder, including: (1) all documents relating to the
beneficial ownership of securities required to be filed with the SEC pursuant to
Section 13(d) or Section 16(a) of the Act including, without limitation: (a) any
acquisition statements on Schedule 13D or Schedule 13G and any amendments
thereto, (b) any joint filing agreements pursuant to Rule 13d-1(f) and (c) any
initial statements of, or statements of changes in, beneficial ownership of
securities on Form 3, Form 4 or Form 5 and (2) any information statements on
Form 13F required to be filed with the SEC pursuant to Section 13(f) of the Act.

All past acts of the attorney-in-fact in furtherance of the foregoing are hereby
ratified and confirmed.

This power of attorney shall be valid from the date hereof until revoked by the
Company.

IN WITNESS WHEREOF, the Company has executed this instrument this 25th day of
October, 1996.

                               WINSTON PARTNERS II LDC



                               By:/s/ Kieran Conroy  /s/ Wiekert Weber
                                  Name: Kieran Conroy / Wiekert Weber




<PAGE>




                                                              EXHIBIT I

                                POWER OF ATTORNEY



KNOW ALL MEN BY THESE PRESENT, that the undersigned, Chatterjee Fund Management,
L.P. (the "Company"), a Delaware limited partnership, hereby makes, constitutes
and appoints PETER A. HURWITZ as the Company's agent and attorney in fact for
the purpose of executing on behalf of the Company, all documents, certificates,
instruments, statements, filings and agreements ("documents") to be filed with
or delivered to any foreign or domestic governmental or regulatory body or
required or requested by any other person or entity pursuant to any legal or
regulatory requirement relating to the acquisition, ownership, management or
disposition of securities or other investments, and any other documents relating
or ancillary thereto, including but not limited to, all documents relating to
filings with the United States Securities and Exchange Commission (the "SEC")
pursuant to the Securities Act of 1933 or the Securities Exchange Act of 1934
(the "Act") and the rules and regulations promulgated thereunder, including: (1)
all documents relating to the beneficial ownership of securities required to be
filed with the SEC pursuant to Section 13(d) or Section 16(a) of the Act
including, without limitation: (a) any acquisition statements on Schedule 13D or
Schedule 13G and any amendments thereto, (b) any joint filing agreements
pursuant to Rule 13d-1(f) and (c) any initial statements of, or statements of
changes in, beneficial ownership of securities on Form 3, Form 4 or Form 5 and
(2) any information statements on Form 13F required to be filed with the SEC
pursuant to Section 13(f) of the Act.

All past acts of the attorney-in-fact in furtherance of the foregoing are hereby
ratified and confirmed.

This power of attorney shall be valid from the date hereof until revoked by the
Company.

IN WITNESS WHEREOF, the Company has executed this instrument this 25th day of
October, 1996.


                                               CHATTERJEE FUND MANAGEMENT, L.P.



                                               By: /s/ Purnendu Chatterjee
                                                  Name: Purnendu Chatterjee
                                                  Title: General Partner


<PAGE>1




                                                             EXHIBIT J

                                POWER OF ATTORNEY



KNOW ALL MEN BY THESE PRESENT, that I, PURNENDU CHATTERJEE, hereby make,
constitute and appoint PETER HURWITZ as my agent and attorney in fact for the
purpose of executing in my name or in my personal capacity all documents,
certificates, instruments, statements, filings and agreements ("documents") to
be filed with or delivered to any foreign or domestic governmental or regulatory
body or required or requested by any other person or entity pursuant to any
legal or regulatory requirement relating to the acquisition, ownership,
management or disposition of securities or other investments, and any other
documents relating or ancillary thereto, including but not limited to, all
documents relating to filings with the Securities and Exchange Commission (the
"SEC") pursuant to the Securities Act of 1933 or the Securities Exchange Act of
1934 (the "Act") and the rules and regulations promulgated thereunder,
including: (1) all documents relating to the beneficial ownership of securities
required to be filed with the SEC pursuant to Section 13(d) or Section 16(a) of
the Act including, without limitation: (a) any acquisition statements on
Schedule 13D or Schedule 13G and any amendments thereto, (b) any joint filing
agreements pursuant to Rule 13(d)-1(f) and (c) any initial statements of, or
statements of changes in, beneficial ownership of securities on Form 3, Form 4
or Form 5 and (2) any information statements on Form 13F required to be filed
with the SEC pursuant to Section 13(f) of the Act.

All past acts of the attorney-in-fact in furtherance of the foregoing are hereby
ratified and confirmed.

This power of attorney shall be valid from the date hereof until revoked by me.

IN WITNESS WHEREOF, I have executed this instrument this 31st day of May, 1995.



                                                     /s/ Purnendu Chatterjee
                                                     PURNENDU CHATTERJEE






<PAGE>1




                                                               EXHIBIT K

                                POWER OF ATTORNEY



KNOW ALL MEN BY THESE PRESENT, that I, GEORGE SOROS, hereby make, constitute and
appoint SEAN C. WARREN as my agent and attorney in fact for the purpose of
executing in my name, in my personal capacity or in my capacity as sole
proprietor of Soros Fund Management all documents, certificates, instruments,
statements, filings and agreements ("documents") to be filed with or delivered
to any foreign or domestic governmental or regulatory body or required or
requested by any other person or entity pursuant to any legal or regulatory
requirement relating to the acquisition, ownership, management or disposition of
securities or other investments, and any other documents relating or ancillary
thereto, including but not limited to, all documents relating to filings with
the United States Securities and Exchange Commission (the "SEC") pursuant to the
Securities Act of 1933 or the Securities Exchange Act of 1934 (the "Act") and
the rules and regulations promulgated thereunder, including: (1) all documents
relating to the beneficial ownership of securities required to be filed with the
SEC pursuant to Section 13(d) or Section 16(a) of the Act including, without
limitation: (a) any acquisition statements on Schedule 13D or Schedule 13G and
any amendments thereto, (b) any joint filing agreements pursuant to Rule
13d-1(f) and (c) any initial statements of, or statements of changes in,
beneficial ownership of securities on Form 3, Form 4 or Form 5 and (2) any
information statements on Form 13F required to be filed with the SEC pursuant to
Section 13(f) of the Act.

All past acts of the attorney-in-fact in furtherance of the foregoing are hereby
ratified and confirmed.

This power of attorney shall be valid from the date hereof until revoked by me.

IN WITNESS WHEREOF, I have executed this instrument this 16th day of April,
1996.



                                                     /s/ George Soros
                                                         GEORGE SOROS


<PAGE>




                                                              EXHIBIT L
                             JOINT FILING AGREEMENT

                  In accordance with Rule 13d-1(f) promulgated under the
Securities and Exchange Act of 1934, the undersigned agree to the joint filing
of a Statement on Schedule 13D with respect to the shares of the Common Stock,
par value $.20 per share, of Amati Communications Corporation, and further agree
that this Joint Filing Agreement be included as an Exhibit thereto.


October 25, 1996                      QUANTUM INDUSTRIAL PARTNERS LDC

                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Attorney-in-Fact



October 25, 1996                      S-C PHOENIX HOLDINGS, L.L.C.

                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Manager



October 25, 1996                      QIH MANAGEMENT INVESTOR, L.P.


                                      By:  QIH Management, Inc.


                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Vice President



October 25, 1996                      QIH MANAGEMENT, INC.

                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Vice President




<PAGE>




October 25, 1996                      WINSTON PARTNERS, L.P.

                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Attorney-in-Fact


October 25, 1996                      WINSTON PARTNERS II LDC


                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Attorney in Fact



October 25, 1996                      WINSTON PARTNERS II L.L.C.


                                      By:  Chatterjee Advisors L.L.C.,
                                           its manager


                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Manager



October 25, 1996                      CHATTERJEE MANAGEMENT COMPANY

                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Vice President



October 25, 1996                      CHATTERJEE ADVISORS L.L.C.

                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Manager




<PAGE>


October 25, 1996                      CHATTERJEE FUND MANAGEMENT, L.P.

                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Attorney-in-Fact



October 25, 1996                      DR. PURNENDU CHATTERJEE


                                      By: /s/ Peter A. Hurwitz
                                      Name:   Peter A. Hurwitz
                                      Title:  Attorney-in-Fact



October 25, 1996                      MR. GEORGE SOROS


                                      By: /s/ Sean C. Warren
                                      Name:   Sean C. Warren
                                      Title:  Attorney-in-Fact





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