C CUBE MICROSYSTEMS INC
SC 13G/A, 1997-02-13
COMPUTER PERIPHERAL EQUIPMENT, NEC
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                                  SCHEDULE 13G

             INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (Amendment No. 1)*

                               C Cube Microsystems
                               -------------------
                                (Name of Issuer)

                                     Common
                                     ------
                         (Title of Class of Securities)

                                    125015107
                                    ---------
                                 (CUSIP Number)



*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1334 ("Act") or otherwise  subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the Notes)

                                  Page 1 of 17

<PAGE>

<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. 125015107                                                  13G                                Page 2 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA CAPITAL GROWTH FUND  95-4107950
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     x
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              California
- ---------------------------- ------- ----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH           Originally filed 2/95          Amended 2/96
   REPORTING PERSON WITH                        -0-                                     -0-
                             ------- ----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER
                                     Originally filed 2/95          Amended 2/96
                                          1,166,572                             868,349
                             ------- ----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER
                                     Originally filed 2/95          Amended 2/96
                                             -0-                                     -0-
                             ------- ----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER
                                     Originally filed 2/95          Amended 2/96
                                           1,166,572                             868,349
- ---------------------------- ------- ----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally filed 2/95          Amended 2/96
                  1,166,572                             868,349
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally filed 2/95          Amended 2/96
                  3.6%                                           2.4%
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 2 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. 125015107                                                  13G                                Page 3 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA PARTNERS (CF)   95-4107954
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     x
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              California
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
      NUMBER OF SHARES                     5    SOLE VOTING POWER
 BENEFICIALLY OWNED BY EACH                     Originally filed 2/95          Amended 2/96
   REPORTING PERSON WITH                                   -0-                                     -0-
                                          ----- -----------------------------------------------------------------------------------
                                           6    SHARED VOTING POWER
                                                Originally filed 2/95          Amended 2/96
                                                     1,166,572                             868,349
                                          ----- -----------------------------------------------------------------------------------
                                           7    SOLE DISPOSITIVE POWER
                                                Originally filed 2/95          Amended 2/96
                                                        -0-                                     -0-
                                          ----- -----------------------------------------------------------------------------------
                                           8    SHARED DISPOSITIVE POWER
                                                Originally filed 2/95          Amended 2/96
                                                      1,166,572                             868,349
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally filed 2/95          Amended 2/96
                  1,166,572                             868,349
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally filed 2/95          Amended 2/96
                  3.6%                                           2.4%
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 3 of 17
<PAGE>

<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>
- -----------------------------------------------------                                     -----------------------------------------
CUSIP No.125015107                                                   13G                                Page 4 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA TECHNOLOGY PARTNERS III   95-4121745
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     x
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              California
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
      NUMBER OF SHARES                     5    SOLE VOTING POWER
 BENEFICIALLY OWNED BY EACH                     Originally filed 2/95          Amended 2/96
   REPORTING PERSON WITH                                   -0-                                     -0-
                                          ----- -----------------------------------------------------------------------------------
                                           6    SHARED VOTING POWER
                                                Originally filed 2/95          Amended 2/96
                                                     70,344                                  52,938
                                          ----- -----------------------------------------------------------------------------------
                                           7    SOLE DISPOSITIVE POWER
                                                Originally filed 2/95          Amended 2/96
                                                        -0-                                     -0-
                                          ----- -----------------------------------------------------------------------------------
                                           8    SHARED DISPOSITIVE POWER
                                                Originally filed 2/95          Amended 2/96
                                                      70,344                                 52,938
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally filed 2/95          Amended 2/96
                  70,344                                     52,938
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally filed 2/95          Amended 2/96
                  3.6%                                           2.4%
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 4 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. 125015107                                                  13G                                Page 5 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA CAPITAL V  94-3095978
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     X
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              CALIFORNIA
- ---------------------------- ------- ----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH           Originally filed 2/95           Amendment 2/96
   REPORTING PERSON WITH                    -0-                                            -0-
                             ------- ----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER
                                     Originally filed 2/95           Amendment 2/96
                                          805,750                                     -0-
                             ------- ----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER
                                     Originally filed 2/95           Amendment 2/96
                                        -0-                                            -0-
                             ------- ----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER
                                     Originally filed 2/95           Amendment 2/96
                                       805,750                                     -0-
- ---------------------------- ------- ----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally filed 2/95           Amendment 2/96
                  805,750                                          -0-
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally filed 2/95           Amendment 2/96
                2.5%                                                  -0-
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 5 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. -125015107                                                 13G                                Page 6 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA PARTNERS (FR)   94-3096657
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     X
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              CALIFORNIA
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
      NUMBER OF SHARES                     5    SOLE VOTING POWER
 BENEFICIALLY OWNED BY EACH                     Originally filed 2/95           Amendment 2/96
   REPORTING PERSON WITH                               -0-                                            -0-
                                          ----- -----------------------------------------------------------------------------------
                                           6    SHARED VOTING POWER
                                                Originally filed 2/95           Amendment 2/96
                                                     805,750                                     -0-
                                          ----- -----------------------------------------------------------------------------------
                                           7    SOLE DISPOSITIVE POWER
                                                Originally filed 2/95           Amendment 2/96
                                                   -0-                                            -0-
                                          ----- -----------------------------------------------------------------------------------
                                           8    SHARED DISPOSITIVE POWER
                                                Originally filed 2/95           Amendment 2/96
                                                  805,750                                     -0-
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally filed 2/95           Amendment 2/96
                  805,750                                          -0-
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally filed 2/95           Amendment 2/96
                2.5%                                                  -0-
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 6 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. -125015107                                                 13G                                Page 7 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA TECHNOLOGY PARTNERS V  94-3095977
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     X
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              CALIFORNIA
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
      NUMBER OF SHARES                     5    SOLE VOTING POWER
 BENEFICIALLY OWNED BY EACH                     Originally filed 2/95           Amendment 2/96
   REPORTING PERSON WITH                             -0-                                         -0-
                                          ----- -----------------------------------------------------------------------------------
                                           6    SHARED VOTING POWER
                                                Originally filed 2/95           Amendment 2/96
                                                    53,718                                       -0-
                                          ----- -----------------------------------------------------------------------------------
                                           7    SOLE DISPOSITIVE POWER
                                                Originally filed 2/95           Amendment 2/96
                                                      -0-                                            -0-
                                          ----- -----------------------------------------------------------------------------------
                                           8    SHARED DISPOSITIVE POWER
                                                Originally filed 2/95           Amendment 2/96
                                                53,718                                       -0-
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally filed 2/95           Amendment 2/96
              53,718                                       -0-
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally filed 2/95           Amendment 2/96
              Less than 1%                                -0-
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 7 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. -125015107                                                 13G                                Page 8 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              SEQUOIA XXII   95-4337758
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     X
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              CALIFORNIA
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
      NUMBER OF SHARES                     5    SOLE VOTING POWER
 BENEFICIALLY OWNED BY EACH                     Originally filed 2/95           Amendment 2/96
   REPORTING PERSON WITH                               -0-                                             -0-
                                          ----- -----------------------------------------------------------------------------------
                                           6    SHARED VOTING POWER
                                                Originally filed 2/95           Amendment 2/96
                                                     35,810                                        -0-
                                          ----- -----------------------------------------------------------------------------------
                                           7    SOLE DISPOSITIVE POWER
                                                Originally filed 2/95           Amendment 2/96
                                                   -0-                                             -0-
                                          ----- -----------------------------------------------------------------------------------
                                           8    SHARED DISPOSITIVE POWER
                                                Originally filed 2/95           Amendment 2/96
                                                     35,810                                        -0-
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally filed 2/95           Amendment 2/96
              35,810                                        -0-
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally filed 2/95           Amendment 2/96
                 Less than 1%                                -0-
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              PN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 8 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. -125015107                                                 13G                                Page 9 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              THOMAS STEPHENSON
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     X
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              US
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
      NUMBER OF SHARES                     5    SOLE VOTING POWER
 BENEFICIALLY OWNED BY EACH                     Originally filed 2/95           Amendment 2/96
   REPORTING PERSON WITH                                   -0-                                        49,061
                                          ----- -----------------------------------------------------------------------------------
                                           6    SHARED VOTING POWER
                                                Originally filed 2/95           Amendment 2/96
                                                    2,096,384                                    920,687
                                          ----- -----------------------------------------------------------------------------------
                                           7    SOLE DISPOSITIVE POWER
                                                Originally filed 2/95           Amendment 2/96
                                                -0-                                         -0-
                                          ----- -----------------------------------------------------------------------------------
                                           8    SHARED DISPOSITIVE POWER
                                                Originally filed 2/95           Amendment 2/96
                                                     2,096,384                                    920,687
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally filed 2/95           Amendment 2/96
                  2,096,384                                     969,748
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally filed 2/95           Amendment 2/96
                 6.5%                                               2.6%
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 9 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. -125015107                                                 13G                                Page 10 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              DONALD VALENTINE
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     X
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              US
- ---------------------------- ------- ----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH           Originally Filed 2/95          Amendment 2/96
   REPORTING PERSON WITH             104,583                                          149,321
                             ------- ----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER
                                     Originally Filed 2/95          Amendment 2/96
                                     2,132,194                                     920,687
                             ------- ----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER
                                     Originally Filed 2/95          Amendment 2/96
                                     104,583                                          149,321
                             ------- ----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER
                                     Originally Filed 2/95          Amendment 2/96
                                     2,132,194                                     920,687
- ---------------------------- ------- ----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally Filed 2/95          Amendment 2/96
              2,236,777                                      1,070,008
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally Filed 2/95          Amendment 2/96
              6.9%                                               3%
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 10 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. -125015107                                                 13G                                Page 11 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              MICHAEL MORITZ
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     X
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              UK
- ---------------------------- ------- ----------------------------------------------------------------------------------------------
     NUMBER OF SHARES          5     SOLE VOTING POWER
BENEFICIALLY OWNED BY EACH           Originally Filed 2/95          Amendment 2/96
   REPORTING PERSON WITH                     -0-                                            28,108
                             ------- ----------------------------------------------------------------------------------------------
                               6     SHARED VOTING POWER
                                     Originally Filed 2/95          Amendment 2/96
                                     2,096,384                                        920,687
                             ------- ----------------------------------------------------------------------------------------------
                               7     SOLE DISPOSITIVE POWER
                                     Originally Filed 2/95          Amendment 2/96
                                     -0-                                            28,108
                             ------- ----------------------------------------------------------------------------------------------
                               8     SHARED DISPOSITIVE POWER
                                     Originally Filed 2/95          Amendment 2/96
                                     2,096,384                                        920,687
- ---------------------------- ------- ----------------------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally Filed 2/95          Amendment 2/96
              2,096,384                                     948,795
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally Filed 2/95          Amendment 2/96
              6.5%                                                 2.7%
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 11 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. 125015107                                                  13G                                Page 12 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              GORDON RUSSELL
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*    (a)      o
                                                                                              (b)     X
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              US
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
      NUMBER OF SHARES                     5    SOLE VOTING POWER
 BENEFICIALLY OWNED BY EACH                     Originally Filed 2/95          Amendment 2/96
   REPORTING PERSON WITH                                -0-                                            56,659
                                          ----- -----------------------------------------------------------------------------------
                                           6    SHARED VOTING POWER
                                                Originally Filed 2/95          Amendment 2/96
                                                2,132,194                                      920,687
                                          ----- -----------------------------------------------------------------------------------
                                           7    SOLE DISPOSITIVE POWER
                                                Originally Filed 2/95          Amendment 2/96
                                                -0-                                            56,659
                                          ----- -----------------------------------------------------------------------------------
                                           8    SHARED DISPOSITIVE POWER
                                                Originally Filed 2/95          Amendment 2/96
                                                2,132,194                                      920,687
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally Filed 2/95          Amendment 2/96
              2,132,194                                  977,318
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally Filed 2/95          Amendment 2/96
              6.6%                                                 2.7%
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 12 of 17
<PAGE>
<TABLE>
<CAPTION>
<S>                                                                  <C>                  <C>

- -----------------------------------------------------                                     -----------------------------------------
CUSIP No. 125015107                                                  13G                                Page 13 of 17 Pages
- -----------------------------------------------------                                     -----------------------------------------

- ------------- ---------------------------------------------------------------------------------------------------------------------
     1        NAME OF REPORTING PERSONS
              S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

              PIERRE LAMOND
- ------------- ---------------------------------------------------------------------------------------------------------------------
     2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                               (a)     o
                                                                                              (b)     X
- ------------- ---------------------------------------------------------------------------------------------------------------------
     3        SEC USE ONLY


- ------------- ---------------------------------------------------------------------------------------------------------------------
     4        CITIZENSHIP OR PLACE OF ORGANIZATION

              US
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
      NUMBER OF SHARES                     5    SOLE VOTING POWER
 BENEFICIALLY OWNED BY EACH                     Originally Filed 2/95          Amendment 2/96
   REPORTING PERSON WITH                               120,000                                         55,659
                                          ----- -----------------------------------------------------------------------------------
                                           6    SHARED VOTING POWER
                                                Originally Filed 2/95          Amendment 2/96
                                                2,096,384                                   920,687
                                          ----- -----------------------------------------------------------------------------------
                                           7    SOLE DISPOSITIVE POWER
                                                Originally Filed 2/95          Amendment 2/96
                                                120,000                                         55,659
                                          ----- -----------------------------------------------------------------------------------
                                           8    SHARED DISPOSITIVE POWER
                                                Originally Filed 2/95          Amendment 2/96
                                                2,096,384                                   920,687
- ----------------------------- ----------- ----- -----------------------------------------------------------------------------------
     9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              Originally Filed 2/95          Amendment 2/96
              2,217,384                                 976,346
- ------------- ---------------------------------------------------------------------------------------------------------------------
     10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*


- ------------- ---------------------------------------------------------------------------------------------------------------------
     11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
              Originally Filed 2/95          Amendment 2/96
              6.8%                                                2.7%
- ------------- ---------------------------------------------------------------------------------------------------------------------
     12       TYPE OF REPORTING PERSON*

              IN
- ------------- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
                                  Page 13 of 17
<PAGE>


       (a)        Name of Issuer:           C Cube Microsystems Company
                                                     .
       (b)        Address of Issuer's Principal Executive Offices:
                                                     1778 McCarthy Boulevard
                                                     Milpitas, CA 95035
Item 2.

       (a)        Name of Persons Filing:   Sequoia Capital Growth Fund ("SCGF")
                                            Sequoia Partners (CF) ("SP(CF)")
                                            Sequoia Technology Partners III
                                             ("STP III")
                                            Sequoia Capital V ("SC V")
                                            Sequoia Partners (FR) ("SP(FR)")
                                            Sequoia Technology Partners V 
                                             ("STP V")
                                            Sequoia XXII ("S XXII")
                                            Pierre Lamond ("PL")
                                            Donald T. Valentine ("DTV")
                                            Thomas F. Stephenson ("TFS")
                                            Gordon Russell ("GR")
                                            Michael Moritz ("MM")

       SP(CF) is the  General  Partner of SCGF.  PL,  DTV,  TFS,  MM, and GR are
General  Partners of SP(CF) and STP III.  SP(FR) is the General Partner of SC V.
PL, DTv, TFS, GR and MM are General Partners of SP(FR) and STP V.

       (b)        Address of Principal Business Office or, if None, Residence:
                                            3000 Sand Hill Road
                                            Building 4, Suite 280
                                            Menlo Park, CA  94025

       (c)        Citizenship:
                                            SCGF, SP(CF), STP III, SC V, SP(FR),
                                            STPV,  S XXII:  California  PL, DTV,
                                            TFS, GR: United States; MM: UK

       (d)        Title of Class of Securities:
                                            Common Stock

       (e)        CUSIP Number:             125015107


Item 3. If this statement is filed pursuant to Rules 13d-1(b),or 13d-2(b), check
        whether the person filing is a:

Not applicable

Item 4.  Ownership

See Rows 5 through 11 of cover pages

Item 5.  Ownership of Five Percent or Less of a Class

         If this statement is being filed to report the fact that as of the date
hereof the reporting  person has ceased to be the beneficial  owner of more than
five percent of the class of securities, check the following: X

         Instruction. Dissolution of a group requires a response to this item.


Item 6.  Ownership of More than Five Percent on Behalf of Another Person

Not applicable

                                  Page 14 of 17
<PAGE>

Item 7.  Identification and Classification of the Subsidiary Which  Acquired the
         Security Being Reported on by the Parent Holding Company

Not applicable

Item 8.  Identification and Classification of Members of the Group

Not applicable

Item 9.  Notice of Dissolution of Group

Not applicable

Item 10. Certification

         [The  following  certification  shall be included if the  statement  is
filed pursuant to Rule 13d-1(b):]

       By signing  below I certify that, to the best of my knowledge and belief,
the  securities  referred  to above  were  acquired  in the  ordinary  course of
business  and were not acquired for the purpose of and do not have the effect of
changing or  influencing  the control of the issuer of such  securities and were
not acquired in connection  with or as a participant in any  transaction  having
such purpose or effect.]


[EXHIBITS]

[A:    Joint Filing Statement]

                                  Page 15 of 17
<PAGE>

                                    SIGNATURE

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

Date:  February 4, 1997

SEQUOIA CAPITAL GROWTH FUND
By its General Partner,
Sequoia Partners (CF)

SEQUOIA TECHNOLOGY PARTNERS III


- --------------------------------
Thomas Stephenson, General Partner

SEQUOIA CAPITAL V
By its General Partner,
Sequoia Partners (FR)

SEQUOIA TECHNOLOGY PARTNERS V


- --------------------------------
Pierre Lamond, General Partner

SEQUOIA XXII


- --------------------------------
Thomas Stephenson


- --------------------------------
Pierre Lamond


- --------------------------------
Donald T. Valentine


- --------------------------------
Thomas F. Stephenson


- --------------------------------
Gordon Russell


- --------------------------------
Michael Moritz

                                  Page 16 of 17
<PAGE>

                                    EXHIBIT A

                             JOINT FILING STATEMENT

       Pursuant to Rule  13d-1(f)(1),  we, the  undersigned,  hereby express our
agreement that the attached Schedule 13G is filed on behalf of each of us.

Date:  February 4, 1997

SEQUOIA CAPITAL GROWTH FUND
By its General Partner,
Sequoia Partners (CF)


SEQUOIA TECHNOLOGY PARTNERS III


- ----------------------------------
Thomas Stephenson, General Partner


SEQUOIA CAPITAL V
By its General Partner,
Sequoia Partners (FR)



SEQUOIA TECHNOLOGY PARTNERS V


- --------------------------------
Pierre Lamond, General Partner



SEQUOIA XXII


- --------------------------------
Thomas Stephenson


- --------------------------------
Pierre Lamond


- --------------------------------
Donald T. Valentine


- --------------------------------
Thomas F. Stephenson


- --------------------------------
Gordon Russell


- --------------------------------
Michael Moritz


                                  Page 17 of 17



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