CIRRUS LOGIC INC
S-8, 1997-12-19
SEMICONDUCTORS & RELATED DEVICES
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             As filed with the Securities and Exchange Commission
                                 on December 18, 1997
                          Registration No. 33-__________

                          SECURITIES AND EXCHANGE COMMISSION
                                 WASHINGTON, D.C.  20549

                                        FORM S-8
                                 REGISTRATION STATEMENT
                                        UNDER
                               THE SECURITIES ACT OF 1933

                                     CIRRUS LOGIC, INC.
                  (Exact Name of Registrant as specified in its charter)

          California                                     77-0024818
    (State of Incorporation)                         (I.R.S. Employer
                                                 Identification Number)

                             3100 West Warren Avenue
                                Fremont, CA  94538
                                 (510) 623-8300
                         (Address, including zip code, of
                       Registrant's principal executive offices)

                            Amended 1996 Stock Plan
                 Amended 1989 Employee Stock Purchase Plan
                        (Full Titles of the Plans)

                            Ronald K. Shelton
                          Chief Financial Officer
                              CIRRUS LOGIC, INC.
                         3100 West Warren Avenue
                             Fremont, CA  94538
                                (510) 623-8300
          (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                   COPIES TO:
                              Michael J. Danaher, Esq.
                        WILSON SONSINI GOODRICH & ROSATI
                           Professional Corporation
                               650 PAGE MILL ROAD
                           PALO ALTO, CALIFORNIA 94304
                                 (415) 493-9300



                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
                                                Proposed         Proposed
     Title of                   Amount           Maximum          Maximum           Amount of
   Securities To                 To Be       Offering Price     Aggregate         Registration
    Be Registered            Registered         Per Share       Offering Price         Fee
<S>                         <C>             <C>                <C>               <C>
Common Stock, no par value

 - Upon exercise of    
   options and stock
   purchase rights under the
   Amended 1996 Stock Plan     2,000,000(1)   $12.09 (3)      $24,180,000 (3)      $7,327

 - Upon exercise of    
   options and stock
   purchase rights under
   Amended 1989 Employee
   Stock Purchase Plan         1,000,000(2)   $12.09 (3)      $12,090,000 (3)      $3,664


<FN>

(1)     The remaining 2,500,000 shares reserved for issuance under the Amended
1996 Stock Plan were registered under Registration Statement on Form S-8
numbered 333-16417 filed with the Commission on November 19, 1996.  Pursuant
to Rule 416(a), this Registration Statement shall also cover any additional
shares of the Registrat's common stock that becomes issuable under the Plan by
reason of any stock dividend, stock split, recapitalization or other similar
transaction effected without the recapitalization of consideration that
increases the number of the Registrant's outstanding shares of Common Stock.

(2)     The remaining 3,400,000 shares reserved for issuance under the Amended
1989 Employee Stock Purchase Plan were registered under eight Registration
Statements on Form S-8 numbered 33-31697, 33-37409, 33-43914, 33-53990,
33-71862, 33-83148, 33-65495 and 333-16417 filed with the Commission on
October 24, 1989, October 24, 1990, November 14, 1991, November 4, 1992,
November 17, 1993, August 22, 1994, December 28, 1995 and November 19, 1996,
respectively.  Pursuant to Rule 416(a), this Registration Statement shall
also cover any additionalshares of the Registrat's common stock that becomes
issuable under the Plan by reason of any stock dividend, stock split,
recapitalization or other similar transaction effected without the
recapitalization of consideration that increases the number of the
Registrant's outstanding shares of Common Stock.

(3)     Estimated solely for the purpose of calculating the amount of
the registration fee required by Section 6(b) of the Securites Act and
computed pursuant to Rule 457(c)under the Securities Act on the basis of
the average of the high and low prices reported in the Nasdaq National
Market on December 16, 1997.

</TABLE>


PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. Information Incorporated by Reference.

        There are hereby incorporated by reference in this Registration
Statement the following documents and information heretofore filed with the
Securities and Exchange Commission (the "Commission"):


        1.      The description of the Company's Common Stock contained in
the Company's Registration Statement on Form 8-A dated May 1, 1989, filed
pursuant to Section 12 of the Securities Exchange Act of 1934, as amended
(the "Exchange Act"), including any amendment or report filed for the purpose
of updating such description.


        2.      Registration Statements on Form S-8 numbered 33-31697,
33-37409, 33-43914, 33-47453, 33-53990, 33-60464, 33-71862, 33-83148,
33-65495 and 333-16417 filed with the Commission on October 24, 1989,
October 24, 1990, November 14, 1991, April 24, 1992, November 4, 1992,
April 2, 1993, November 17, 1993, August 22, 1994, December 28, 1995
and November 19, 1996, respectively.

        3.      The Company's Annual Report on Form 10-K for the year ended
March 29, 1997 filed pursuant to Section 13(a) of the Exchange Act.

        4.      The Company's Quarterly Report on Form 10-Q for the quarter
ended June 28, 1997 filed pursuant to Section 13 of the Exchange Act.

        5.      The Company's Quarterly Report on Form 10-Q for the quarter
ended September 27, 1997 filed pursuant to Section 13 of the Exchange Act.

        6.      The Company's Registration Statement on Form S-1/A filed with
the Commission on December 17, 1997.

        6.      All documents filed by the Company pursuant to Sections 13(a),  
13(c), 14 and 15(d) of the Exchange Act after the date of this Registration
Statement and prior to the filing of a post-effective amendment which indicates
that all securities offered have been sold or which deregisters all securities
then remaining unsold, shall be deemed to be incorporated by reference in this
Registration Statement and to be part hereof from the date of filing of such
documents.


Item 4. Description of Securities.

        Not applicable.


Item 5. Interests of Named Experts and Counsel.

        Not applicable.


Item 6. Indemnification of Directors and Officers.

        Section 317 of the California Corporations Code authorizes a court to
award, or a corporation's Board of Directors to grant indemnity to directors and
officers in terms sufficiently broad to permit such indemnification under
certain circumstances for liabilities (including reimbursement for expenses
incurred) arising under the Securities Act of 1933, as amended (the "Securities
Act").  Article IV of the  Company's Articles of Incorporation and Article VI
of the Bylaws of the Company provide for indemnification of certain agents to
the maximum extent permitted by the California Corporations Code.  Persons
covered by this indemnification provision include current and former directors,
officers, employees and other agents of the Company, as well as persons who
serve at the request of the Company as directors, officers, employees or agents
of another enterprise.  In addition, the Company has entered into agreements
with its officers and directors which require the Corporation to indemnify its
officers and directors to the maximum extent permitted under California law.

Item 7. Exemption from Registration Claimed.

        Not applicable.


Item 8. Exhibits.

      Exhibit
      Number 

        4.1     Amended 1996 Stock  Plan.

        4.2     The Forms of Stock Option Agreement and Restricted Stock
Purchase Agreement to the 1996 Stock Plan is incorporated herein by reference.
See Registration Statement on Form S-8 numbered 333-16417 filed with the
Commission on November 19, 1996.

        4.3     Amended 1989 Employee Stock Purchase Plan.

        4.4     The Form of Stock Purchase Agreement to the Amended 1989
Employee Stock Purchase Plan is incorporated herein by reference.  See
Registration Statements on Form S-8 numbered 33-31697, 33-37409, 33-43914,
33-53990, 33-71862, 33-83148 and 33-65495 filed with the Commission on October
24, 1989, October 24, 1990, November 14, 1991, November 4, 1992, November 17,
1993, August 22, 1994, December 28, 1995 and November 19, 1996, respectively.


        5.1     Opinion of Wilson, Sonsini, Goodrich & Rosati, P.C.,
as to legality of securities being registered.

        23.1    Consent of Ernst & Young LLP, Independent Auditors. 

        23.2    Consent of Counsel (contained in Exhibit 5.1).

        24.1    Power of Attorney (see page II-5).


Item 9. Undertakings.

        (a)     The undersigned registrant hereby undertakes:

                (1)     To file, during any period in which offers or sales
are being made, a post-effective amendment to this Registration Statement to
include any material information with respect to the plan of distribution not
previously disclosed in the Registration Statement or any material change to
such information in the Registration Statement.


                (2)     That, for the purpose of determining any liability
under the Securities Act, each such post-effective amendment shall be deemed
to be a new Registration Statement relating to the securities offered therein,
and the offering of such securities at that time shall be deemed to be the
initial bona fide offering thereof.


                (3)     To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

        (b)     The undersigned registrant hereby undertakes that, for purposes
of determining any liability under the Securities Act, each filing of the
registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in the Registration Statement shall be deemed to be a
new Registration Statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.


        (c)     Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of the registrant pursuant to the foregoing provisions, or otherwise, the
registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the
Securities Act  and is, therefore, unenforceable.  In the event that a claim
for indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act and will be governed by the final adjudication of such issue.





SIGNATURES

        Pursuant to the requirements of the Securities Act of 1933, as amended,
the registrant certifies that it has reasonable grounds to believe that it
meets all of the requirements for filing on Form S-8 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Fremont, State of California, on November __,
1997.

                                   CIRRUS LOGIC, INC.


                                   /s/ Ronald K. Shelton
                                   Ronald K. Shelton
                                   Vice President, Finance
                                   Chief Financial Officer,
                                   and Treasurer



POWER OF ATTORNEY

        KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears  below constitutes and appoints Michael L. Hackworth and Ronald K.
Shelton jointly and severally, his attorneys-in-fact, each with the power of
substitution, for him in any and all capacities, to sign any  amendments to
this Registration Statement on Form S-8, and to file the same, with exhibits
thereto and  other documents in connection therewith, with the Securities and
Exchange Commission, hereby ratifying and confirming all that each of said
attorney-in-fact, or his substitute or substitutes, may do or cause to be done
by virtue hereof.


        Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.


/s/ Michael L. Hackworth               
(Michael L. Hackworth)
Chairman of the Board, Chief Executive Officer, and Director
(Principal Executive Officer)
December 18, 1997

/s/ Ronald K. Shelton                  
(Ronald K. Shelton)
Vice President, Finance, Chief
Financial Officer, and Treasurer
(Principal Financial Officer and Principal Accounting Officer)
December 18, 1997

/s/ Suhas S. Patil                     
(Suhas S. Patil)
Chairman Emeritus and Director
December 18, 1997

/s/ C. Gordon Bell                     
(C. Gordon Bell)
Director
December 18, 1997

/s/ D. James Guzy                      
(D. James Guzy)
Director
December 18, 1997

/s/ Walden C. Rhines                   
(Walden C. Rhines)
Director
December 18, 1997

/s/ Robert H. Smith                    
(Robert H. Smith)
Director
December 18, 1997

Exhibit
Number                      Description


4.1      Amended 1996 Stock Plan.

4.2      The Forms of Stock Option Agreement and Restricted Stock
         Purchase Agreement to the Amended 1996 Stock Plan is
         incorporated herein by reference.  See Registration Statement
         on Form S-8 numbered 333-16417 filed with the Commission on
         November 19, 1996.

4.3      Amended 1989 Employee Stock Purchase Plan.

4.4      The Form of Stock Purchase Agreement to the Amended 1989 
         Employee Stock Purchase Plan is incorporated herein by
         reference.  See Registration Statements on Form S-8 numbered
         33-31697, 33-37409, 33-43914, 33-53990, 33-71862, 33-83148,
         33-65495 and 333-16417 filed with the Commission on October 24,
         1989, October 24, 1990, November 14, 1991, November 4, 1992,
         November 17, 1993, August 22, 1994, December 28, 1995 and
         November 19, 1996, respectively.

5.1      Opinion of Wilson, Sonsini, Goodrich & Rosati, P.C., as to
         legality of securities being registered.

23.1     Consent of Ernst & Young LLP, Independent Auditors.

23.2     Consent of Counsel (contained in Exhibit 5.1).

24.1     Power of Attorney



                              CIRRUS LOGIC, INC.
                           Amended 1996 STOCK PLAN
                   (as amended March 19 and May 28, 1997)

1.   Purposes of the Plan.  The purposes of this Stock Plan are:
     --------------------                                       

     .    to attract and retain the best available personnel for positions of
          substantial responsibility,

     .    to provide additional incentive to Employees and Consultants, and

     .    to promote the success of the Company's business.

     Options granted under the Plan may be Incentive Stock Options or
     Nonstatutory Stock Options, as determined by the Administrator at the time
     of grant. Stock Purchase Rights may also be granted under the Plan.

2.   Definitions.  As used herein, the following definitions shall apply:
     -----------                                                         

     a)   "Administrator" means the Board or any of its Committees as shall be
           -------------                                                      
          administering the Plan, in accordance with Section 4 of the Plan.

     b)   "Applicable Laws" means the legal requirements relating to the
           ---------------                                              
          administration of stock option plans under U. S. state corporate laws,
          U.S. federal and state securities laws, the Code and the applicable
          laws of any foreign country or jurisdiction where Options or Stock
          Purchase Rights will be or are being granted under the Plan.

     c)   "Board" means the Board of Directors of the Company.
           -----                                              

     d)   "Code" means the Internal Revenue Code of 1986, as amended.
           ----                                                      

     e)   "Committee"  means a Committee appointed by the Board in accordance
           ---------                                                         
          with Section 4 of the Plan.

     f)   "Common Stock" means the Common Stock of the Company.
           ------------                                        

     g)   "Company" means Cirrus Logic, Inc., a California corporation.
           -------                                                     

     h)   "Consultant" means any person, including an advisor, engaged by the
           ----------                                                        
          Company or a Parent or Subsidiary to render services and who is
          compensated for such services.  The term "Consultant" shall not
          include Directors who are paid only a director's fee by the Company or
          who are not compensated by the Company for their services as
          Directors.

     i)   "Continuous Status as an Employee or Consultant" means that the
           ----------------------------------------------                
          employment or consulting relationship with the Company, any Parent, or
          Subsidiary, is not interrupted or terminated.  Continuous Status as an
          Employee or Consultant shall not be considered interrupted in the case
          of (i) any leave of absence approved by the Company or (ii) transfers
          between locations of the Company or between the Company, its Parent,
          any Subsidiary, or any successor.  A leave of absence approved by the
          Company shall include sick leave, military leave, or any other
          personal leave approved by an authorized representative of the
          Company.  For purposes of Incentive Stock Options, no such leave may
          exceed ninety days, unless reemployment upon expiration of such leave
          is guaranteed by statute or contract.  If reemployment upon expiration
          of a leave of absence approved by the Company is not so guaranteed, on
          the 181st day of such leave any 

                                      -1-
<PAGE>

          Incentive Stock Option held by the Optionee shall cease to be treated
          as an Incentive Stock Option and shall be treated for tax purposes as
          a Nonstatutory Stock Option.

     j)   "Director" means a member of the Board.
           --------                              

     k)   "Disability" means total and permanent disability as defined in
           ----------                                                    
          Section 22(e)(3) of the Code.

     l)   "Employee" means any person, including Officers and Directors,
           --------                                                     
          employed by the Company or any Parent or Subsidiary of the Company.
          Neither service as a Director nor payment of a director's fee by the
          Company shall be sufficient to constitute "employment" by the Company.

     m)   "Exchange Act" means the Securities Exchange Act of 1934, as amended.
           ------------                                                        

     n)   "Fair Market Value" means, as of any date, the value of Common Stock
           -----------------                                                  
          determined as follows:

          i)   If the Common Stock is listed on any established stock exchange
               or a national market system, including without limitation the
               Nasdaq National Market or The Nasdaq SmallCap Market of The
               Nasdaq Stock Market, its Fair Market Value shall be the closing
               sales price for such stock (or the closing bid, if no sales were
               reported) as quoted on such exchange or system for the day of
               determination, as reported in The Wall Street Journal or such
               other source as the Administrator deems reliable;

          ii)  If the Common Stock is regularly quoted by a recognized
               securities dealer but selling prices are not reported, the Fair
               Market Value of a Share of Common Stock shall be the mean between
               the high bid and low asked prices for the Common Stock on the day
               of determination, as reported in The Wall Street Journal or such
               other source as the Administrator deems reliable;

          iii) In the absence of an established market for the Common Stock, the
               Fair Market Value shall be determined in good faith by the
               Administrator.

     o)   "Incentive Stock Option" means an Option intended to qualify as an
           ----------------------                                           
          incentive stock option within the meaning of Section 422 of the Code
          and the regulations promulgated thereunder.

     p)   "Nonstatutory Stock Option" means an Option not intended to qualify as
           -------------------------                                            
          an Incentive Stock Option.

     q)   "Notice of Grant" means a written notice evidencing certain terms and
           ---------------                                                     
          conditions of an individual Option or Stock Purchase Right grant.  The
          Notice of Grant is part of the Option Agreement.

     r)   "Officer" means a person who is an officer of the Company within the
           -------                                                            
          meaning of Section 16 of the Exchange Act and the rules and
          regulations promulgated thereunder.

     s)  "Option" means a stock option granted pursuant to the Plan.
          ------                                                    

                                      -2-
<PAGE>

     t)   "Option Agreement" means a written agreement between the Company and 
           ----------------  
          an Optionee evidencing the terms and conditions of an individual
          Option grant. The Option Agreement is subject to the terms and
          conditions of the Plan.

     u)   "Optioned Stock" means the Common Stock subject to an Option or Stock
           --------------                                                      
          Purchase Right.

     v)   "Optionee" means an Employee or Consultant who holds an outstanding
           --------                                                          
          Option or Stock Purchase Right.

     w)   "Parent" means a "parent corporation", whether now or hereafter
           ------                                                        
          existing, as defined in Section 424(e) of the Code.

     x)   "Plan" means this 1996 Stock Option Plan.
           ----                                    

     y)   "Restricted Stock" means shares of Common Stock acquired pursuant to a
           ----------------                                                     
          grant of Stock Purchase Rights under Section 11 below.

     z)   "Restricted Stock Purchase Agreement" means a written agreement 
           ----------------------------------- 
          between the Company and the Optionee evidencing the terms and
          restrictions applying to stock purchased under a Stock Purchase Right.
          The Restricted Stock Purchase Agreement is subject to the terms and
          conditions of the Plan and the Notice of Grant.

     aa)  "Rule 16b-3" means Rule 16b-3 of the Exchange Act or any successor to
           ----------                                                          
          Rule 16b-3, as in effect when discretion is being exercised with
          respect to the Plan.

     bb)  "Section 16(b)" means Section 16(b) of the Securities Exchange Act of
           -------------                                                       
          1934, as amended.

     cc)  "Share" means a share of the Common Stock, as adjusted in accordance
           -----                                                              
          with Section 13 of the Plan.

     dd)  "Stock Purchase Right" means the right to purchase Common Stock
           --------------------                                          
          pursuant to Section 11 of the Plan, as evidenced by a Notice of Grant.

     ee)  "Subsidiary" means a "subsidiary corporation", whether now or
           ----------
          hereafter existing, as defined in Section 424(f) of the Code.

3.   Stock Subject to the Plan.  Subject to the provisions of Section 13 of the
     -------------------------
     Plan, the maximum aggregate number of Shares which may be optioned and sold
     under the Plan is 4,500,000 Shares.  The Shares may be authorized, but
     unissued, or reacquired Common Stock.

     a)   If an Option or Stock Purchase Right expires or becomes unexercisable
          without having been exercised in full, the unpurchased Shares which
          were subject thereto shall become available for future grant or sale
          under the Plan (unless the Plan has terminated); provided, however,
          that Shares that have actually been issued under the Plan, whether
          upon exercise of an Option or Stock Purchase Right, shall not be
          returned to the Plan and shall not become available for future
          distribution under the Plan, except that if Shares of Restricted Stock
          are repurchased by the Company at their original purchase price, and
          the original purchaser of such Shares did not receive any benefits of
          ownership of such Shares, such Shares shall become available for
          future grant under the Plan.  For 

                                      -3-
<PAGE>

          purposes of the preceding sentence, voting rights shall not be
          considered a benefit of Share ownership.

4.   Administration of the Plan.
     -------------------------- 

     a)  Procedure.
         --------- 

          i)   Multiple Administrative Bodies.  If permitted by Rule 16b-3, the
               ------------------------------                                  
               Plan may be administered by different bodies with respect to
               Directors, Officers who are not Directors, and Employees who are
               neither Directors nor Officers.

          ii)  Administration With Respect to Directors and Officers Subject to
               ----------------------------------------------------------------
               Section 16(b).  With respect to Option or Stock Purchase 
               _____________
               Right grants made to Employees who are also Officers or 
               Directors subject to Section 16(b) of the Exchange Act, 
               the Plan shall be administered by (A) the Board, if the 
               Board may administer the Plan in a manner complying with 
               the rules under Rule 16b-3 relating to the disinterested 
               administration of employee benefit plans under which 
               Section 16(b) exempt discretionary grants and awards of 
               equity securities are to be made, or (B) a committee 
               designated by the Board to administer the Plan, which 
               committee shall be constituted to comply with the rules 
               under Rule 16b-3 relating to the disinterested 
               administration of employee benefit plans under which 
               Section 16(b) exempt discretionary grants and awards of 
               equity securities are to be made.  Once appointed, such
               Committee shall continue to serve in its designated capacity
               until otherwise directed by the Board.  From time to time the
               Board may increase the size of the Committee and appoint
               additional members, remove members (with or without cause) and
               substitute new members, fill vacancies (however caused), and
               remove all members of the Committee and thereafter directly
               administer the Plan, all to the extent permitted by the rules
               under Rule 16b-3 relating to the disinterested administration 
               of employee benefit plans under which Section 16(b) exempt
               discretionary grants and awards of equity securities are to be
               made.

          iii) Administration With Respect to Other Persons.  With respect to
               --------------------------------------------                  
               Option or Stock Purchase Right grants made to Employees or
               Consultants who are neither Directors nor Officers of the
               Company, the Plan shall be administered by (A) the Board or (B) a
               committee designated by the Board, which committee shall be
               constituted to satisfy Applicable Laws.  Once appointed, such
               Committee shall serve in its designated capacity until otherwise
               directed by the Board.  The Board may increase the size of the
               Committee and appoint additional members, remove members (with or
               without cause) and substitute new members, fill vacancies
               (however caused), and remove all members of the Committee and
               thereafter directly administer the Plan, all to the extent
               permitted by Applicable Laws.

     b)  Powers of the Administrator.  Subject to the provisions of the Plan,
         ---------------------------                                         
         and in the case of a Committee, subject to the specific duties
         delegated by the Board to such Committee, the Administrator shall have
         the authority, in its discretion:

          i)   to determine the Fair Market Value of the Common Stock, in
               accordance with Section 2(n) of the Plan;

          ii)  to select the Consultants and Employees to whom Options and Stock
               Purchase Rights may be granted hereunder;

                                      -4-
<PAGE>

          iii) to determine whether and to what extent Options and Stock
               Purchase Rights or any combination thereof, are granted
               hereunder;

          iv)  to determine the number of shares of Common Stock to be covered
               by each Option and Stock Purchase Right granted hereunder;

          v)   to approve forms of agreement for use under the Plan;

          vi)  to determine the terms and conditions, not inconsistent with the
               terms of the Plan, of any award granted hereunder.  Such terms
               and conditions include, but are not limited to, the exercise
               price, the time or times when Options or Stock Purchase Rights
               may be exercised (which may be based on performance criteria),
               any vesting acceleration or waiver of forfeiture restrictions,
               and any restriction or limitation regarding any Option or Stock
               Purchase Right or the shares of Common Stock relating thereto,
               based in each case on such factors as the Administrator, in its
               sole discretion, shall determine;

          vii) to construe and interpret the terms of the Plan and awards
               granted pursuant to the Plan;

         viii) to prescribe, amend and rescind rules and regulations relating
               to the Plan, including rules and regulations relating to sub-
               plans established for the purpose of qualifying for preferred tax
               treatment under foreign tax laws;

          ix)  to modify or amend each Option or Stock Purchase Right (subject
               to Section 15(c) of the Plan), including the discretionary
               authority to extend the post-termination exercisability period of
               Options longer than is otherwise provided for in the Plan;

          x)   to authorize any person to execute on behalf of the Company any
               instrument required to effect the grant of an Option or Stock
               Purchase Right previously granted by the Administrator;

          xi)  to determine the terms and restrictions applicable to Options and
               Stock Purchase Rights and any Restricted Stock; and

          xii) to make all other determinations deemed necessary or advisable
               for administering the Plan.

     c)   Effect of Administrator's Decision.  The Administrator's decisions,
          ----------------------------------                                 
          determinations and interpretations shall be final and binding on all
          Optionees and any other holders of Options or Stock Purchase Rights.

5.   Eligibility.  Nonstatutory Stock Options and Stock Purchase Rights may be
     -----------                                                              
     granted to Employees and Consultants.  Incentive Stock Options may be
     granted only to Employees.  If otherwise eligible, an Employee or
     Consultant who has been granted an Option or Stock Purchase Right may be
     granted additional Options or Stock Purchase Rights.

                                      -5-
<PAGE>

6.   Limitations.
     ----------- 

     a)   Each Option shall be designated in the written option agreement as
          either an Incentive Stock Option or a Nonstatutory Stock Option.
          However, notwithstanding such designation, to the extent that the
          aggregate Fair Market Value of the Shares with respect to which
          Incentive Stock Options are exercisable for the first time by the
          Optionee during any calendar year (under all plans of the Company and
          any Parent or Subsidiary) exceeds $100,000, such Options shall be
          treated as Nonstatutory Stock Options.

     b)   Neither the Plan nor any Option or Stock Purchase Right shall confer
          upon an Optionee any right with respect to continuing the Optionee's
          employment or consulting relationship with the Company, nor shall they
          interfere in any way with the Optionee's right or the Company's right
          to terminate such employment or consulting relationship at any time,
          with or without cause.

     c)   The following limitations shall apply to grants of Options to
          Employees:

          i)   No Employee shall be granted, in any fiscal year of the Company,
               Options to purchase more than 400,000 Shares.

          ii)  In connection with his or her initial employment, an Employee may
               be granted Options to purchase up to an additional 800,000 Shares
               which shall not count against the limit set forth in subsection
               (i) above.

          iii) The foregoing limitations shall be adjusted proportionately in
               connection with any change in the Company's capitalization as
               described in Section 13.

          iv)  If an Option is cancelled in the same fiscal year of the Company
               in which it was granted (other than in connection with a
               transaction described in Section 13), the cancelled Option will
               be counted against the limits set forth in subsections (i) and
               (ii) above.

7.   Term of Plan.  Subject to Section 19 of the Plan, the Plan shall become
     ------------                                                           
     effective upon the earlier to occur of its adoption by the Board or its
     approval by the shareholders of the Company as described in Section 19 of
     the Plan.  It shall continue in effect for a term of ten (10) years unless
     terminated earlier under Section 15 of the Plan.

8.   Term of Option.  The term of each Option shall be stated in the Notice of
     --------------                                                           
     Grant; provided, however, that in the case of an Incentive Stock Option,
     the term shall be ten (10) years from the date of grant or such shorter
     term as may be provided in the Notice of Grant.

9.   Option Exercise Price and Consideration.
     --------------------------------------- 

     a)   Exercise Price.  The per share exercise price for the Shares to be
          --------------                                                    
          issued pursuant to exercise of an Option shall be no less than 100% of
          the Fair Market Value per Share on the date of grant.

     b)   Waiting Period and Exercise Dates.  At the time an Option is granted,
          ---------------------------------                                    
          the Administrator shall fix the period within which the Option may be
          exercised and shall determine any conditions which must be satisfied
          before the Option may be exercised.  In so doing, the Administrator
          may specify that an Option may not be exercised until either the
          completion 

                                      -6-
<PAGE>

          of a service period or the achievement of performance criteria with
          respect to the Company or the Optionee.

     c)  Form of Consideration.  The Administrator shall determine the
         ---------------------                                        
          acceptable form of consideration for exercising an Option, including
          the method of payment.  In the case of an Incentive Stock Option, the
          Administrator shall determine the acceptable form of consideration at
          the time of grant.  Such consideration may consist entirely of:

          i)   cash;

          ii)  check;

          iii) promissory note;

          iv)  other Shares which (A) in the case of Shares acquired upon
               exercise of an option, have been owned by the Optionee for more
               than six months on the date of surrender, and (B) have a Fair
               Market Value on the date of surrender equal to the aggregate
               exercise price of the Shares as to which said Option shall be
               exercised;

          v)   delivery of a properly executed exercise notice together with
               such other documentation as the Administrator and the broker, if
               applicable, shall require to effect an exercise of the Option and
               delivery to the Company of the sale or loan proceeds required to
               pay the exercise price;

          vi)  a reduction in the amount of any Company liability to the
               Optionee, including any liability attributable to the Optionee's
               participation in any Company-sponsored deferred compensation
               program or arrangement;

          vii) any combination of the foregoing methods of payment; or

         viii) such other consideration and method of payment for the issuance
               of Shares to the extent permitted by Applicable Laws.

10.  Exercise of Option.
     ------------------ 

     a)   Procedure for Exercise; Rights as a Shareholder. Any Option granted
          -----------------------------------------------                    
          hereunder shall be exercisable according to the terms of the Plan and
          at such times and under such conditions as determined by the
          Administrator and set forth in the Option Agreement.

          i)   An Option may not be exercised for a fraction of a Share.

          ii)  An Option shall be deemed exercised when the Company receives:
               (i) written notice of exercise (in accordance with the Option
               Agreement) from the person entitled to exercise the Option, and
               (ii) full payment for the Shares with respect to which the Option
               is exercised.  Full payment may consist of any consideration and
               method of payment authorized by the Administrator and permitted
               by the Option Agreement and the Plan.  Shares issued upon
               exercise of an Option shall be issued in the name of the Optionee
               or, if requested by the Optionee, in the name of the Optionee and
               his or her spouse.  Until the stock certificate evidencing such
               Shares is issued (as evidenced by the appropriate entry on the
               books of the Company or of a duly authorized transfer agent of
               the Company), no 

                                      -7-
<PAGE>

               right to vote or receive dividends or any other rights as a
               shareholder shall exist with respect to the Optioned Stock,
               notwithstanding the exercise of the Option. The Company shall
               issue (or cause to be issued) such stock certificate promptly
               after the Option is exercised. No adjustment will be made for a
               dividend or other right for which the record date is prior to the
               date the stock certificate is issued, except as provided in
               Section 13 of the Plan.

          iii) Exercising an Option in any manner shall decrease the number of
               Shares thereafter available, both for purposes of the Plan and
               for sale under the Option, by the number of Shares as to which
               the Option is exercised.

     b)   Termination of Employment or Consulting Relationship.  Upon
          ----------------------------------------------------       
          termination of an Optionee's Continuous Status as an Employee or
          Consultant, other than upon the Optionee's death or Disability, the
          Optionee may exercise his or her Option within such period of time as
          is specified in the Notice of Grant to the extent that he or she is
          entitled to exercise it on the date of termination (but in no event
          later than the expiration of the term of such Option as set forth in
          the Notice of Grant).  In the absence of a specified time in the
          Notice of Grant, the Option shall remain exercisable for three (3)
          months following the Optionee's termination.  Notwithstanding the
          above, in the event the Company is involved in a merger as a result of
          which Optionees are precluded from selling shares of the acquiring
          company until the publication of financial results covering post-
          merger combined operations ("Pooling Restrictions"), options held by
          Optionees subject to such Pooling Restrictions (including options that
          are assumed or substituted pursuant to Section 13(c)) shall remain
          exercisable until five (5) business days after the expiration of such
          Pooling Restrictions (but not beyond the original term of the Option)
          notwithstanding an earlier termination of such Optionee's Continuous
          Status as an Employee or Consultant.  If, on the date of termination,
          the Optionee is not entitled to exercise his or her entire Option, the
          Shares covered by the unexercisable portion of the Option shall revert
          to the Plan.  If, after termination, the Optionee does not exercise
          his or her Option within the time specified by the Administrator, the
          Option shall terminate, and the Shares covered by such Option shall
          revert to the Plan.

     c)   Notwithstanding the above, in the event of an Optionee's change in
          status from Consultant to Employee or Employee to Consultant, the
          Optionee's Continuous Status as an Employee or Consultant shall not
          automatically terminate solely as a result of such change in status.
          In such event, an Incentive Stock Option held by the Optionee shall
          cease to be treated as an Incentive Stock Option and shall be treated
          for tax purposes as a Nonstatutory Stock Option three months and one
          day following such change of status.

     d)   Disability of Optionee.  Upon termination of an Optionee's Continuous
          ----------------------                                               
          Status as an Employee or Consultant as a result of the Optionee's
          Disability, the Optionee may exercise his or her Option at any time
          within twelve (12) months (or such other period of time as is
          determined by the Administrator) from the date of termination, but
          only to the extent that the Optionee is entitled to exercise it on the
          date of termination (and in no event later than the expiration of the
          term of the Option as set forth in the Notice of Grant).  If, on the
          date of termination, the Optionee is not entitled to exercise his or
          her entire Option, the Shares covered by the unexercisable portion of
          the Option shall revert to the Plan.  If, after termination, the
          Optionee does not exercise his or her Option within the time specified
          herein, the Option shall terminate, and the Shares covered by such
          Option shall revert to the Plan.

                                      -8-
<PAGE>

     e)   Death of Optionee.  In the event of the death of an Optionee, the
          -----------------                                                
          Option may be exercised at any time within twelve (12) months (or such
          other period of time as is determined by the Administrator) following
          the date of death (but in no event later than the expiration of the
          term of such Option as set forth in the Notice of Grant), by the
          Optionee's estate or by a person who acquired the right to exercise
          the Option by bequest or inheritance, but only to the extent that the
          Optionee was entitled to exercise the Option at the date of death.
          If, at the time of death, the Optionee was not entitled to exercise
          his or her entire Option, the Shares covered by the unexercisable
          portion of the Option shall immediately revert to the Plan.  If, after
          death, the Optionee's estate or a person who acquired the right to
          exercise the Option by bequest or inheritance does not exercise the
          Option within the time specified herein, the Option shall terminate,
          and the Shares covered by such Option shall revert to the Plan.

     f)   Rule 16b-3.  Options granted to individuals subject to Section 16 of
          ----------                                                          
          the Exchange Act ("Insiders") must comply with the applicable
          provisions of Rule 16b-3 and shall contain such additional conditions
          or restrictions as may be required thereunder to qualify for the
          maximum exemption from Section 16 of the Exchange Act with respect to
          Plan transactions.


11.  Stock Purchase Rights.
     --------------------- 

     a)   Rights to Purchase.  Stock Purchase Rights may be issued either alone,
          ------------------                                                    
          in addition to, or in tandem with other awards granted under the Plan
          and/or cash awards made outside of the Plan.  After the Administrator
          determines that it will offer Stock Purchase Rights under the Plan, it
          shall advise the offeree in writing, by means of a Notice of Grant, of
          the terms, conditions and restrictions related to the offer, including
          the number of Shares that the offeree shall be entitled to purchase,
          the price to be paid, and the time within which the offeree must
          accept such offer, which shall in no event exceed ninety (90) days
          from the date upon which the Administrator made the determination to
          grant the Stock Purchase Right.  The offer shall be accepted by
          execution of a Restricted Stock Purchase Agreement in the form
          determined by the Administrator.  The aggregate number of Shares
          subject to grants of Stock Purchase Rights shall not exceed ten
          percent (10%) of the Shares subject to the Plan pursuant to Section 3.

     b)   Repurchase Option.  Unless the Administrator determines otherwise, the
          -----------------                                                     
          Restricted Stock Purchase Agreement shall grant the Company a
          repurchase option exercisable upon the voluntary or involuntary
          termination of the purchaser's employment with the Company for any
          reason (including death or Disability); provided that the minimum
          period of employment over which any such Company repurchase option
          lapses shall not be less than three (3) years.  The purchase price for
          Shares repurchased pursuant to the Restricted Stock purchase agreement
          shall be the original price paid by the purchaser and may be paid by
          cancellation of any indebtedness of the purchaser to the Company.  The
          repurchase option shall lapse at a rate determined by the
          Administrator.

     c)   Rule 16b-3.  Stock Purchase Rights granted to Insiders, and Shares
          ----------                                                        
          purchased by Insiders in connection with Stock Purchase Rights, shall
          be subject to any restrictions applicable thereto in compliance with
          Rule 16b-3.  An Insider may only purchase Shares pursuant to the grant
          of a Stock Purchase Right, and may only sell Shares purchased pursuant
          to the grant of a Stock Purchase Right, during such time or times as
          are permitted by Rule 16b-3.

                                      -9-
<PAGE>

     d)   Other Provisions.  The Restricted Stock Purchase Agreement shall
          ----------------                                                
          contain such other terms, provisions and conditions not inconsistent
          with the Plan as may be determined by the Administrator in its sole
          discretion.  In addition, the provisions of Restricted Stock Purchase
          Agreements need not be the same with respect to each purchaser.

     e)   Rights as a Shareholder.  Once the Stock Purchase Right is exercised,
          -----------------------                                              
          the purchaser shall have the rights equivalent to those of a
          shareholder, and shall be a shareholder when his or her purchase is
          entered upon the records of the duly authorized transfer agent of the
          Company.  No adjustment will be made for a dividend or other right for
          which the record date is prior to the date the Stock Purchase Right is
          exercised, except as provided in Section 13 of the Plan.

     f)   Issuance of Shares.  As soon as possible after full payment of the
          ------------------                                                
          purchase price, the Shares purchased shall be duly issued; provided,
          however, that the Administrator may require that the purchaser make
          adequate provision for any Federal and State withholding obligations
          of the Company as a condition to such purchase.

     g)   Shares Available Under the Plan. Exercise of a Stock Purchase Right in
          -------------------------------  
          any manner shall result in a decrease in the number of Shares that
          thereafter shall be available for reissuance under the Plan.

12.  Non-Transferability of Options and Stock Purchase Rights.  An Option or
     --------------------------------------------------------               
     Stock Purchase Right may not be sold, pledged, assigned, hypothecated,
     transferred, or disposed of in any manner other than by will or by the laws
     of descent or distribution and may be exercised, during the lifetime of the
     Optionee, only by the Optionee.

13.  Adjustments Upon Changes in Capitalization, Dissolution, Merger or Asset
     ------------------------------------------------------------------------
     Sale.
     ---- 

     a)   Changes in Capitalization.  Subject to any required action by the
          -------------------------                                        
     shareholders of the Company, the number of shares of Common Stock covered
     by each outstanding Option and Stock Purchase Right, and the number of
     shares of Common Stock which have been authorized for issuance under the
     Plan but as to which no Options or Stock Purchase Rights have yet been
     granted or which have been returned to the Plan upon cancellation or
     expiration of an Option or Stock Purchase Right, as well as the price per
     share of Common Stock covered by each such outstanding Option or Stock
     Purchase Right, shall be proportionately adjusted for any increase or
     decrease in the number of issued shares of Common Stock resulting from a
     stock split, reverse stock split, stock dividend, combination or
     reclassification of the Common Stock, or any other increase or decrease in
     the number of issued shares of Common Stock effected without receipt of
     consideration by the Company; provided, however, that conversion of any
     convertible securities of the Company shall not be deemed to have been
     "effected without receipt of consideration."  Such adjustment shall be made
     by the Board, whose determination in that respect shall be final, binding
     and conclusive.  Except as expressly provided herein, no issuance by the
     Company of shares of stock of any class, or securities convertible into
     shares of stock of any class, shall affect, and no adjustment by reason
     thereof shall be made with respect to, the number or price of shares of
     Common Stock subject to an Option or Stock Purchase Right.


  b)      Dissolution or Liquidation.   In the event of the proposed dissolution
          --------------------------                                            
     or liquidation of the Company, the Administrator shall notify each Optionee
     as soon as practicable prior to the effective date of such proposed
     transaction. The Administrator in its discretion may provide for an
     Optionee to have the right to exercise his or her Option or Stock Purchase
     Right until ten (10) days prior to such transaction as to all of the
     Optioned Stock covered thereby, including Shares

                                      -10-
<PAGE>

     as to which the Option would not otherwise be exercisable. In addition, the
     Administrator may provide that any Company repurchase option applicable to
     any Shares purchased upon exercise of an Option or Stock Purchase Right
     shall lapse as to all such Shares, provided the proposed dissolution or
     liquidation takes place at the time and in the manner contemplated. To the
     extent it has not been previously exercised, an Option or Stock Purchase
     Right will terminate immediately prior to the consummation of such proposed
     action.

  c)      Merger or Asset Sale.  In the event of a merger of the Company with or
          --------------------                                                  
     into another corporation, or the sale of substantially all of the assets of
     the Company, each outstanding Option and Stock Purchase Right shall be
     assumed or an equivalent option or right substituted by the successor
     corporation or a Parent or Subsidiary of the successor corporation, or in
     the event that the successor corporation refuses to assume or substitute
     for the Option or Stock Purchase Right, the Optionee shall have the right
     to exercise the Option or Stock Purchase Right as to all of the Optioned
     Stock, including Shares as to which it would not otherwise be exercisable.
     If an Option or Stock Purchase Right is exercisable in lieu of assumption
     or substitution in the event of a merger or sale of assets, the
     Administrator shall notify the Optionee that the Option or Stock Purchase
     Right shall be fully exercisable for a period of fifteen (15) days from the
     date of such notice, and the Option or Stock Purchase Right shall terminate
     upon the expiration of such period.  For the purposes of this paragraph,
     the Option or Stock Purchase Right shall be considered assumed if,
     following the merger or sale of assets, the option or right confers the
     right to purchase or receive, for each Share of Optioned Stock subject to
     the Option or Stock Purchase Right immediately prior to the merger or sale
     of assets, the consideration (whether stock, cash, or other securities or
     property) received in the merger or sale of assets by holders of Common
     Stock for each Share held on the effective date of the transaction (and if
     holders were offered a choice of consideration, the type of consideration
     chosen by the holders of a majority of the outstanding Shares); provided,
     however, that if such consideration received in the merger or sale of
     assets was not solely common stock of the successor corporation or its
     Parent, the Administrator may, with the consent of the successor
     corporation, provide for the consideration to be received upon the exercise
     of the Option or Stock Purchase Right, for each Share of Optioned Stock
     subject to the Option or Stock Purchase Right, to be solely common stock of
     the successor corporation or its Parent equal in fair market value to the
     per share consideration received by holders of Common Stock in the merger
     or sale of assets.

14.  Date of Grant.  The date of grant of an Option or Stock Purchase Right
     -------------                                                         
shall be, for all purposes, the date on which the Administrator makes the
determination granting such Option or Stock Purchase Right, or such other later
date as is determined by the Administrator.  Notice of the determination shall
be provided to each Optionee within a reasonable time after the date of such
grant.

15.  Amendment and Termination of the Plan.
     ------------------------------------- 

     a)  Amendment and Termination.  The Board may at any time amend, alter,
         -------------------------                                          
     suspend or terminate the Plan.

     b)  Shareholder Approval.  The Company shall obtain shareholder approval of
         --------------------                                                   
     any Plan amendment to the extent necessary and desirable to comply with
     Rule 16b-3 or with Sections 162(m) or 422 of the Code (or any successor
     rule or statute or other applicable law, rule or regulation, including the
     requirements of any exchange or quotation system on which the Common Stock
     is listed or quoted).  Such shareholder approval, if required, shall be
     obtained in such a manner and to such a degree as is required by the
     applicable law, rule or regulation.

     c)  Effect of Amendment or Termination.  No amendment, alteration,
         ----------------------------------                            
     suspension or termination of the Plan shall impair the rights of any
     Optionee, unless mutually agreed otherwise 

                                      -11-
<PAGE>

     between the Optionee and the Administrator, which agreement must be in
     writing and signed by the Optionee and the Company.

16.  Conditions Upon Issuance of Shares.
     ---------------------------------- 

     a)  Legal Compliance.  Shares shall not be issued pursuant to the exercise
         ----------------                                                      
     of an Option or Stock Purchase Right unless the exercise of such Option or
     Stock Purchase Right and the issuance and delivery of such Shares shall
     comply with all relevant provisions of law, including, without limitation,
     the Securities Act of 1933, as amended, the Exchange Act, the rules and
     regulations promulgated thereunder, Applicable Laws, and the requirements
     of any stock exchange or quotation system upon which the Shares may then be
     listed or quoted, and shall be further subject to the approval of counsel
     for the Company with respect to such compliance.

     b)  Investment Representations.  As a condition to the exercise of an
         --------------------------                                       
     Option or Stock Purchase Right, the Company may require the person
     exercising such Option or Stock Purchase Right to represent and warrant at
     the time of any such exercise that the Shares are being purchased only for
     investment and without any present intention to sell or distribute such
     Shares if, in the opinion of counsel for the Company, such a representation
     is required.

17.  Liability of Company.
     -------------------- 

     a)  Inability to Obtain Authority.  The inability of the Company to obtain
         -----------------------------                                         
     authority from any regulatory body having jurisdiction, which authority is
     deemed by the Company's counsel to be necessary to the lawful issuance and
     sale of any Shares hereunder, shall relieve the Company of any liability in
     respect of the failure to issue or sell such Shares as to which such
     requisite authority shall not have been obtained.

     b)  Grants Exceeding Allotted Shares.  If the Optioned Stock covered by an
         --------------------------------                                      
     Option or Stock Purchase Right exceeds, as of the date of grant, the number
     of Shares which may be issued under the Plan without additional shareholder
     approval, such Option or Stock Purchase Right shall be void with respect to
     such excess Optioned Stock, unless shareholder approval of an amendment
     sufficiently increasing the number of Shares subject to the Plan is timely
     obtained in accordance with Section 15(b) of the Plan.

18.  Reservation of Shares.  The Company, during the term of this Plan, will at
     ---------------------                                                     
     all times reserve and keep available such number of Shares as shall be
     sufficient to satisfy the requirements of the Plan.

19.  Shareholder Approval  Continuance of the Plan shall be subject to approval
     --------------------                                                      
     by the shareholders of the Company within twelve (12) months before or
     after the date the Plan is adopted.  Such shareholder approval shall be
     obtained in the manner and to the degree required under applicable federal
     and state law.

                                      -12-



                                   EXHIBIT 4.3

                              CIRRUS LOGIC, INC.

                   AMENDED 1989 EMPLOYEE STOCK PURCHASE PLAN
                   -----------------------------------------

     The following constitute the provisions of the 1989 Employee Stock Purchase
Plan of Cirrus Logic, Inc., as amended March 22, 1990, March 21, 1991, April 7,
1992, May 25, 1993, May 5, 1994, April 17, 1995, May 21, 1996 and March 19, 
1997.

     1.  Purpose.  The purpose of the Plan is to provide employees of the
         -------                                                         
Company and its Designated Subsidiaries with an opportunity to purchase Common
Stock of the Company through accumulated payroll deductions.  It is the
intention of the Company to have the Plan qualify as an "Employee Stock Purchase
Plan" under Section 423 of the Internal Revenue Code of 1986, as amended.  The
provisions of the Plan shall, accordingly, be construed so as to extend and
limit participation in a manner consistent with the requirements of that section
of the Code.

     2.  Definitions.
         ----------- 

          (a) "Board" shall mean the Board of Directors of the Company.
               -----                                                   

          (b) "Code" shall mean the Internal Revenue Code of 1986, as amended.
               ----                                                           

          (c) "Common Stock" shall mean the Common Stock, no par value, of the
               ------------                                                   
Company.

          (d) "Company" shall mean Cirrus Logic, Inc., a California corporation.
               -------                                                          

          (e) "Compensation" shall mean gross earnings, including payments for
               ------------                                                   
overtime, incentive payments, bonuses and commissions.

          (f) "Continuous Status as an Employee" shall mean the absence of any
               --------------------------------                               
interruption or termination of service as an Employee.  Continuous Status as an
Employee shall not be considered interrupted in the case of a leave of absence
agreed to in writing by the Company, provided that such leave is for a period of
not more than ninety (90) days or reemployment upon the expiration of such leave
is guaranteed by contract or statute.

          (g) "Designated Subsidiaries" shall mean the Subsidiaries which have
               -----------------------                                        
been designated by the Board from time to time in its sole discretion as
eligible to participate in the Plan.

                                      -1-
<PAGE>

          (h) "Employee" shall mean any person, including an officer, who is
               --------                                                     
customarily employed for at least twenty (20) hours per week and more than five
(5) months in a calendar year by the Company or one of its Designated
Subsidiaries.

          (i) "Exercise Date" shall mean the last day of each offering period of
               -------------                                                    
the Plan.

          (j) "Offering Date" shall mean the first day of each offering period
               -------------                                                  
of the Plan.

          (k) "Plan" shall mean this Amended 1989 Employee Stock Purchase Plan.
               ----                                                            

          (l) "Subsidiary" shall mean a corporation, domestic or foreign, of
               ----------                                                   
which not less than fifty percent (50%) of the voting shares are held by the
Company or a Subsidiary, whether or not such corporation now exists or is
hereafter organized or acquired by the Company or a Subsidiary.

     3.  Eligibility.
         ----------- 

          (a) Any person who is an Employee as of the Offering Date of the first
offering period shall be eligible to participate in such offering period under
the Plan; thereafter, any person who is an Employee fifteen (15) days prior to
the Offering Date of a given offering period shall be eligible to participate in
such offering period under the Plan.  The eligibility criteria set forth in this
Paragraph 3(a) is subject to the requirements of the paragraph 5(a) and the
limitations imposed by Section 423(b) of the Code.

          (b) Any provisions of the Plan to the contrary notwithstanding, no
Employee shall be granted an option under the Plan (i) if, immediately after the
grant, such Employee (or any other person whose stock would be attributed to
such Employee pursuant to Section 425(d) of the Code) would own stock and/or
hold outstanding options to purchase stock possessing five percent (5%) or more
of the total combined voting power or value of all classes of stock of the
Company or of any subsidiary of the Company, or (ii) which permits his rights to
purchase stock under all employee stock purchase plans (described in Section 423
of the Code) of the Company and its subsidiaries to accrue at a rate which
exceeds Twenty-Five Thousand Dollars ($25,000) of fair market value of such
stock (determined at the time such option is granted) for each calendar year in
which such option is outstanding at any time.

     4.  Offering Periods.  The Plan shall be implemented by one offering during
         ----------------                                                       
each six month period of the Plan.  The first offering period shall commence on
the effective date of the Company's initial public offering pursuant to a
Registration Statement filed with the Securities and Exchange Commission and
shall terminate on December 31, 1989.  Subsequent offering periods shall
continue until the Plan is terminated in accordance with paragraph 19 hereof.
The Board of Directors of the Company shall have the power to change the
duration of offering periods with respect to future offerings without
shareholder approval if such change is announced at least fifteen (15) days
prior to the scheduled beginning of the first offering period to be affected.

                                      -2-
<PAGE>

     5.  Participation.
         ------------- 

          (a) An eligible Employee may become a participant in the Plan by
completing a subscription agreement authorizing payroll deduction on the form
provided by the Company and filing it with the Company's payroll office fifteen
(15) days prior to the applicable Offering Date, unless a later time for filing
the subscription agreement is set by the Board for all eligible Employees with
respect to a given offering.

          (b) Payroll deductions for a participant shall commence on the first
payroll following the Offering Date and shall end on the Exercise Date of the
offering to which such authorization is applicable, unless sooner terminated by
the participant as provided in paragraph 10.

     6.  Payroll Deductions.
         ------------------ 

          (a) At the time a participant files his subscription agreement, he
shall elect to have payroll deductions made on each payday during the offering
period in an amount not exceeding fifteen percent (15%) of the Compensation
which he received on the payday immediately preceding the Offering Date, and the
aggregate of such payroll deductions during the offering period shall not exceed
fifteen percent (15%) of his aggregate Compensation during said offering period.

          (b) All payroll deductions made by a participant shall be credited to
his account under the Plan.  A participant may not make any additional payments
into such account.

          (c) A participant may discontinue his participation in the Plan as
provided in paragraph 10, or may lower, but not increase, the rate of his
payroll deductions during the offering period by completing or filing with the
Company a new authorization for payroll deduction.  The change in rate shall be
effective fifteen (15) days following the Company's receipt of the new
authorization.

     7.  Grant of Option.
         --------------- 

          (a) On the Offering Date of each offering period, each eligible
Employee participating in the Plan shall be granted an option to purchase (at
the per share option price) up to a number of shares of the Company's Common
Stock determined by dividing such Employee's payroll deductions to be
accumulated during such offering period (not to exceed an amount equal to
fifteen percent (15%) of his Compensation as of the date of the commencement of
the applicable offering period) by eighty-five percent (85%) of the fair market
value of a share of the Company's Common Stock on the Offering Date, subject to
the limitations set forth in Section 3(b) and 12 hereof.  Fair market value of a
share of the Company's Common Stock shall be determined as provided in Section
7(b) herein.

          (b) The option price per share of the shares offered in a given
offering period shall be the lower of: (i) eighty-five percent (85%) of the fair
market value of a share of the Common 

                                      -3-
<PAGE>

Stock of the Company on the Offering Date; or (ii) eighty-five percent (85%) of
the fair market value of a share of the Common Stock of the Company on the
Exercise Date. The fair market value of the Company's Common Stock on a given
date shall be determined by the Board in its discretion; provided, however, that
where there is a public market for the Common Stock, the fair market value per
Share shall be the mean of the bid and asked prices of the Common Stock for such
date, as reported in the Wall Street Journal (or, if not so reported, as
otherwise reported by the National Association of Securities Dealers Automated
Quotation (NASDAQ) System) or, in the event the Common Stock is listed on a
stock exchange, the fair market value per Share shall be the closing price on
such exchange on such date, as reported in the Wall Street Journal.

     8.  Exercise of Option.  Unless a participant withdraws from the Plan as
         ------------------                                                  
provided in paragraph 10, his option for the purchase of shares will be
exercised automatically on the Exercise Date of the offering period, and the
maximum number of full shares subject to option will be purchased for him at the
applicable option price with the accumulated payroll deductions in his account.
The shares purchased upon exercise of an option hereunder shall be deemed to be
transferred to the participant on the Exercise Date.  During his lifetime, a
participant's option to purchase shares hereunder is exercisable only by him.

     9.  Delivery.  Within 30 days after the Exercise Date of each offering
         --------                                                          
period, the Company shall arrange the delivery to each participant, as
appropriate, of a certificate representing the shares purchased upon exercise of
his option.  Any cash remaining to the credit of a participant's account under
the Plan after a purchase by him of shares at the termination of each offering
period, or which is insufficient to purchase a full share of Common Stock of the
Company, shall be carried forward to the subsequent offering period.

     10.  Withdrawal; Termination of Employment.
          ------------------------------------- 

          (a) A participant may withdraw all but not less than all the payroll
deductions credited to his account under the Plan fifteen (15) days prior to the
Exercise Date of the offering period by giving written notice to the Company.
All of the participant's payroll deductions credited to his account will be paid
to him within thirty (30) days after receipt of his notice of withdrawal and his
option for the current period will be automatically terminated, and no further
payroll deductions for the purchase of shares will be made during the offering
period.

          (b) Upon termination of the participant's Continuous Status as an
Employee prior to the Exercise Date of the offering period for any reason,
including retirement or death, the payroll deductions credited to his account
will be returned to him or, in the case of his death, to the person or persons
entitled thereto under paragraph 14, and his option will be automatically
terminated.


          (c) In the event an Employee fails to remain in Continuous Status as
an Employee of the Company for at least twenty (20) hours per week during the
offering period in which the 

                                      -4-
<PAGE>

employee is a participant, he will be deemed to have elected to withdraw from
the Plan and the payroll deductions credited to his account will be returned to
him and his option terminated.

          (d) A participant's withdrawal from an offering will not have any
effect upon his eligibility to participate in a succeeding offering or in any
similar plan which may hereafter be adopted by the Company.

     11.  Interest.  No interest shall accrue on the payroll deductions of a
          --------                                                          
participant in the Plan.


     12.  Stock.
          ----- 

          (a) The maximum number of shares of the Company's Common Stock which
shall be made available for sale under the Plan shall be 4,400,000 shares,
subject to adjustment upon changes in capitalization of the Company as provided
in paragraph 18.  If the total number of shares which would otherwise be subject
to options granted pursuant to Section 7(a) hereof on the Offering Date of an
offering period exceeds the number of shares then available under the Plan
(after deduction of all shares for which options have been exercised or are then
outstanding), the Company shall make a pro rata allocation of the shares
remaining available for option grant in as uniform a manner as shall be
practicable and as it shall determine to be equitable.  In such event, the
Company shall give written notice of such reduction of the number of shares
subject to the option to each Employee affected thereby and shall similarly
reduce the rate of payroll deductions, if necessary.

          (b) The participant will have no interest or voting right in shares
covered by his option until such option has been exercised.

          (c) Shares to be delivered to a participant under the Plan will be
registered in the name of the participant or in the name of the participant and
his spouse.

     13.  Administration.  The Plan shall be administered by the Board of the
          --------------                                                     
Company or a committee of members of the Board appointed by the Board.  The
administration, interpretation or application of the Plan by the Board or its
committee shall be final, conclusive and binding upon all participants.  Members
of the Board who are eligible Employees are permitted to participate in the
Plan, provided that:

          (a) Members of the Board who are eligible to participate in the Plan
may not vote on any matter affecting the administration of the Plan or the grant
of any option pursuant to the Plan.

          (b) If a Committee is established to administer the Plan, no member of
the Board who is eligible to participate in the Plan may be a member of the
Committee.

     14.  Designation of Beneficiary.
          -------------------------- 

                                      -5-
<PAGE>

          (a) A participant may file a written designation of a beneficiary who
is to receive any shares and cash, if any, from the participant's account under
the Plan in the event of such participant's death subsequent to the end of the
offering period but prior to delivery to him of such shares and cash.  In
addition, a participant may file a written designation of a beneficiary who is
to receive any cash from the participant's account under the Plan in the event
of such participant's death prior to the Exercise Date of the offering period.

          (b) Such designation of beneficiary may be changed by the participant
at any time by written notice.  In the event of the death of a participant and
in the absence of a beneficiary validly designated under the Plan who is living
at the time of such participant's death, the Company shall deliver such shares
and/or cash to the executor or administrator of the estate of the participant,
or if no such executor or administrator has been appointed (to the knowledge of
the Company), the Company, in its discretion, may deliver such shares and/or
cash to the spouse or to any one or more dependents or relatives of the
participant, or if no spouse, dependent or relative is known to the Company,
then to such other person as the Company may designate.

     15.  Transferability.  Neither payroll deductions credited to a
          ---------------                                           
participant's account nor any rights with regard to the exercise of an option or
to receive shares under the Plan may be assigned, transferred, pledged or
otherwise disposed of in any way (other than by will, the laws of descent and
distribution or as provided in paragraph 14 hereof) by the participant.  Any
such attempt at assignment, transfer, pledge or other disposition shall be
without effect, except that the Company may treat such act as an election to
withdraw funds in accordance with paragraph 10.

     16.  Use of Funds.  All payroll deductions received or held by the Company
          ------------                                                         
under the Plan may be used by the Company for any corporate purpose, and the
Company shall not be obligated to segregate such payroll deductions.

     17.  Reports.  Individual accounts will be maintained for each participant
          -------                                                              
in the Plan.  Statements of account will be given to participating Employees
promptly following the Exercise Date, which statements will set forth the
amounts of payroll deductions, the per share purchase price, the number of
shares purchased and the remaining cash balance carried forward to the
subsequent offering period, if any.

     18.  Adjustments Upon Changes in Capitalization.  Subject to any required
          ------------------------------------------                          
action by the shareholders of the Company, the number of shares of Common Stock
covered by each option under the Plan which has not yet been exercised and the
number of shares of Common Stock which have been authorized for issuance under
the Plan but have not yet been placed under option (collectively, the
"Reserves"), as well as the price per share of Common Stock covered by each
option under the Plan which has not yet been exercised, shall be proportionately
adjusted for any increase or decrease in the number of issued shares of Common
Stock resulting from a stock split, reverse stock split, stock dividend,
combination or reclassification of the Common Stock, or any other increase or
decrease in the number of shares of Common Stock effected without receipt of
consideration by the 

                                      -6-
<PAGE>

Company; provided, however, that conversion of any convertible securities of the
Company shall not be deemed to have been "effected without receipt of
consideration". Such adjustment shall be made by the Board, whose determination
in that respect shall be final, binding and conclusive. Except as expressly
provided herein, no issue by the Company of shares of stock of any class, or
securities convertible into shares of stock of any class, shall affect, and no
adjustment by reason thereof shall be made with respect to, the number or price
of shares of Common Stock subject to an option.

     In the event of the proposed dissolution or liquidation of the Company, the
offering period will terminate immediately prior to the consummation of such
proposed action, unless otherwise provided by the Board.  In the event of a
proposed sale of all or substantially all of the assets of the Company, or the
merger of the Company with or into another corporation, each option under the
Plan shall be assumed or an equivalent option shall be substituted by such
successor corporation or a parent or subsidiary of such successor corporation,
unless the Board determines, in the exercise of its sole discretion and in lieu
of such assumption or substitution, that the participant shall have the right to
exercise the option as to all of the optioned stock, including shares as to
which the option would not otherwise be exercisable.  If the Board makes an
option fully exercisable in lieu of assumption or substitution in the event of a
merger or sale of assets, the Board shall notify the participant that the option
shall be fully exercisable for a period of fifteen (15) days from the date of
such notice, and the option will terminate upon the expiration of such period.

     The Board may, if it so determines in the exercise of its sole discretion,
also make provision for adjusting the Reserves, as well as the price per share
of Common Stock covered by each outstanding option, in the event that the
Company effects one or more reorganizations, recapitalizations, rights offerings
or other increases or reductions of shares of its outstanding Common Stock, and
in the event of the Company being consolidated with or merged into any other
corporation.

     19.  Amendment or Termination.  The Board of Directors of the Company may
          ------------------------                                            
at any time terminate or amend the Plan.  Except as provided in paragraph 18, no
such termination can affect options previously granted, nor may an amendment
make any change in any option theretofore granted which adversely affects the
rights of any participant, nor may an amendment be made without prior approval
of the shareholders of the Company (obtained in the manner described in
paragraph 21) if such amendment would increase the number of shares that may be
issued under the Plan.

     20.  Notices.  All notices or other communications by a participant to the
          -------                                                              
Company under or in connection with the Plan shall be deemed to have been duly
given when received in the form specified by the Company at the location, or by
the person, designated by the Company for the receipt thereof.

     21.  Shareholder Approval.
          -------------------- 

                                      -7-
<PAGE>

          (a) Any required approval of the shareholders of the Company shall be
solicited substantially in accordance with Section 14(a) of the Exchange Act and
the rules and regulations promulgated thereunder.

          (b) If any required approval by the shareholders of the Plan itself or
of any amendment to increase the number of shares reserved for issuance under
the Plan is solicited at any time other than in the manner described in
paragraph 21(a) hereof, then the Company shall, at or prior to the first annual
meeting of shareholders held subsequent to the granting of an option hereunder
to an officer or director do the following:

          (i) furnish in writing to the holders entitled to vote for the Plan
substantially the same information which would be required (if proxies to be
voted with respect to approval or disapproval of the Plan or amendment were then
being solicited) by the rules and regulations in effect under Section 14(a) of
the Exchange Act at the time such information is furnished; and

          (ii) file with, or mail for filing to, the Securities and Exchange
Commission four copies of the written information referred to in subsection (ii)
hereof not later than the date on which such information is first sent or given
to shareholders.

     22.  Conditions Upon Issuance of Shares.  Shares shall not be issued with
          ----------------------------------                                  
respect to an option unless the exercise of such option and the issuance and
delivery of such shares pursuant thereto shall comply with all applicable
provisions of law, domestic or foreign, including without limitation, the
Securities Act of 1933, as amended, the Securities Exchange Act of 1934, as
amended, the rules and regulations promulgated thereunder, and the requirements
of any stock exchange upon which the shares may then be listed, and shall be
further subject to the approval of counsel for the Company with respect to such
compliance.

     As a condition to the exercise of an option, the Company may require the
person exercising such option to represent and warrant at the time of any such
exercise that the shares are being purchased only for investment and without any
present intention to sell or distribute such shares if, in the opinion of
counsel for the Company, such a representation is required by any of the
aforementioned applicable provisions of law.

23.  Term of Plan.  The Plan shall become effective upon the earlier to occur of
     ------------                                                               
its adoption by the Board of Directors or its approval by the shareholders of
the Company as described in paragraph 21.  It shall continue in effect for a
term of twenty (20) years unless sooner terminated under paragraph 19.

                                      -8-



                                 EXHIBIT 5.1

December 18, 1997 

Cirrus Logic, Inc. 
3100 West Warren Avenue 
Fremont, CA 94538 

Re:  Registration Statement on Form S-8 

Ladies and Gentlemen: 

We have examined the Registration Statement on Form S-8 to be  filed by you
with the Securities and Exchange Commission on or about December 18, 1997
(the "Registration Statement"), in connection with the registration under the
Securities Act of 1933, as amended, of 2,000,000 and 1,000,000 shares of your 
Common Stock, no par value (the "Shares"), reserved for issuance under the
Amended 1996 Stock Plan (the "Stock Plan") and the Amended 1989 Employee
Stock Purchase (the "Purchase Plan"), respectively.  As your legal counsel,
we have examined the proceedings taken and proposed to be taken in connection 
with the issuance, sale and payment of consideration for the Shares to be 
issued under the Plans. 

It is our opinion that, when issued and sold in compliance with 
applicable prospectus delivery requirements and in the manner 
referred to in the Plans and pursuant to the agreements which
accompany each option grant under the Stock Plan, the Shares will
be legally and validly issued, fully paid and non-assessable.

We consent to the use of this opinion as an exhibit to the 
Registration Statement and further consent to the use of our name 
wherever appearing in the Registration Statement and any 
amendment thereto. 

                               Sincerely, 

                               /s/ WILSON, SONSINI, GOODRICH & ROSATI
                               Professional Corporation 



                             EXHIBIT 23.1

        CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent to the incorporation by reference in the Registration Statement
(Form S-8) pertaining to the Amended 1996 Stock Plan and the Amended 1989
Employee Stock Purchase Plan of Cirrus Logic, Inc. of our report dated
April 23, 1997 (except for Note 16, as to which the date is April 30, 1997)
with respect to the consolidated financial statements and schedule of Cirrus
Logic, Inc. included in its Annual Report (Form 10-K) for
the year ended March 29, 1997, filed with the Securities and Exchange 
Commission.

                                        /s/ ERNST & YOUNG LLP

San Jose, California
December 18, 1997



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