Document:

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                                                                    EXHIBIT 99.4

                        CONEXANT SYSTEMS, INC. LETTERHEAD

                                                     November 6, 2002

Skyworks Solutions, Inc.
20 Sylvan Road
Woburn, Massachusetts  01801
ATTENTION: Paul E. Vincent
           Chief Financial Officer

Gentlemen:

         Reference is made to the Tax Allocation Agreement (the "TAX ALLOCATION
AGREEMENT") dated as of June 25, 2002 by and among Conexant Systems, Inc.
("CONEXANT"), Washington Sub, Inc. and Skyworks Solutions, Inc. (formerly known
as Alpha Industries, Inc.) ("SKYWORKS"). This letter agreement (this "LETTER
AGREEMENT") will confirm our understanding with respect to amendments to Section
3.02 and Schedule 3.02(b) of the Tax Allocation Agreement and the scope of any
continuing indemnification by Skyworks for Distribution Taxes (as defined in the
Tax Allocation Agreement). Capitalized terms used in this Letter Agreement and
not otherwise defined herein shall have the meanings assigned to such terms in
the Tax Allocation Agreement.

         1.       Schedule 3.02(b) to the Tax Allocation Agreement (which
defines an Alpha Tax Act) is hereby deleted and replaced in its entirety by the
new Schedule 3.02(b) attached hereto and Section 3.02(c) of the Tax Allocation
Agreement is hereby deleted and replaced in its entirety by the words
"Intentionally Omitted".

         2.       The first sentence of Section 3.02(e) of the Tax Allocation
Agreement is amended to read as follows:

         "Notwithstanding the foregoing, an Alpha Tax Act shall not include any
         transaction or action specifically disclosed or specifically described
         in or contemplated by any of the Transaction Agreements, the Merger
         Agreement, the Stock Purchase Agreement, the Asset Purchase Agreements,
         the Refinancing Agreement between Conexant and Skyworks dated as of
         November 6, 2002 (the "Refinancing Agreement") or the First Amendment
         to the Financing Agreement among Conexant, Skyworks and the Skyworks
         Subsidiaries (as defined therein), dated as of November 6, 2002 (the
         "First Amendment to the Financing Agreement") (including the issuance
         of the Junior Notes, the Interim Convertible Notes, the

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         Senior Convertible Notes (each as defined in the Refinancing
         Agreement), or Skyworks common stock issued pursuant to the conversion
         thereof) or, except as specifically set forth in Schedule 3.01(b), any
         action taken on or prior to the Distribution Date. Notwithstanding
         anything to the contrary set forth in this Agreement or any other
         agreement to which Skyworks or any of its subsidiaries or affiliates is
         a party or by which any of their respective assets are bound, neither
         Skyworks nor any of its subsidiaries or affiliates shall be liable for
         any Distribution Taxes other than by reason of the occurrence of an
         Alpha Tax Act."

         3.       The Tax Allocation Agreement shall be amended to include a
definition of the "Amendment Date." The Amendment Date shall mean the date of
consummation of the sale by Skyworks of the Junior Notes (as contemplated by and
defined in the Refinancing Agreement).

         4.       The amendments set forth herein shall be effective upon the
effectiveness of the First Amendment to the Financing Agreement. Except as
expressly provided herein, the Tax Allocation Agreement shall remain in full
force and effect in accordance with its terms.

                  Please confirm your agreement with the foregoing by signing
and returning the enclosed copy of this Letter Agreement to the attention of
Dennis E. O'Reilly, Senior Vice President, General Counsel and Secretary, at
facsimile (949) 483-9500, telephone (949) 483-3018.

                                         Very truly yours,

                                         CONEXANT SYSTEMS, INC.

                                         By: /s/ Balakrishnan S. Iyer
                                             ---------------------------

Acknowledged and Agreed:

SKYWORKS SOLUTIONS, INC.

By: /s/ David J. Aldrich
    ---------------------------<PAGE>
                                                                  EXHIBIT 4.4(a)
                       AMENDMENT NO. 1 TO RIGHTS AGREEMENT

     THIS AMENDMENT NO. 1 TO RIGHTS AGREEMENT (this "Amendment"), dated as of
November 7, 2002, is between Pactiv Corporation, a Delaware corporation (the
"Company"), and National City Bank (the "Rights Agent").

     WHEREAS, the Company and First Chicago Trust Company of New York entered
into a Qualified Offer Plan Rights Agreement dated as of November 4, 1999 (the
"Rights Agreement");

     WHEREAS, National City Bank was substituted as rights agent under the
Rights Agreement in place of First Chicago Trust Company of New York in
accordance with the Rights Agreement; and

     WHEREAS, pursuant to Section 27 of the Rights Agreement, the Company and
the Rights Agent desire to amend the Rights Agreement to reflect such as set
forth below.

     NOW, THEREFORE, the Rights Agreement is hereby amended as follows:

     1. Amendment of identity of Rights Agent.

          The first paragraph on page 1 of the Rights Agreement is amended to
read in its entirety as follows:

                      QUALIFIED OFFER PLAN RIGHTS AGREEMENT

               Qualified Offer Plan Rights Agreement, dated as of November 4,
          1999, as amended on November 7, 2002 ("Agreement"), between Pactiv
          Corporation, a Delaware corporation (the "Company"), and National City
          Bank, as Rights Agent (the "Rights Agent").

     2. Amendment of Section 3(c)

          The legend set forth in Section 3(c) of the Rights Agreement is
amended to read in its entirety as follows:

          This certificate also evidences and entitles the holder hereof to
          certain rights as set forth in a Qualified Offer Plan Rights Agreement
          between Pactiv Corporation (the "Company") and National City Bank, as
          Rights Agent, dated as of November 4, 1999 and as amended from time to
          time (the "Rights Agreement"), the terms of which are hereby
          incorporated herein by reference and a copy of which is on file at the
          principal executive offices of the Company. Under certain
          circumstances, as set forth in the Rights Agreement, such Rights will
          be evidenced by separate certificates and will no longer be evidenced
          by this certificate. The Company will mail to the holder of this
          certificate a copy of the Rights

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          Agreement without charge after receipt of a written request therefor.
          Under certain circumstances, as set forth in the Rights Agreement,
          Rights owned by or transferred to any Person who is or becomes an
          Acquiring Person (as defined in the Rights Agreement) and certain
          transferees thereof will become null and void and will no longer be
          transferable.

     3. Amendment of Form of Rights Certificate.

          The first paragraph of the form of rights certificate attached as
Exhibit B to the Rights Agreement is amended to read in its entirety as follows:

                               RIGHTS CERTIFICATE

                               PACTIV CORPORATION

          This certifies that ____________________________ or registered
assigns, is the registered owner of the number of Rights set forth above, each
of which entitles the owner thereof, subject to the terms, provisions and
conditions of the Qualified Offer Plan Rights Agreement, dated as of November 4,
1999, as the same may be amended from time to time (the "Rights Agreement"),
between Pactiv Corporation, a Delaware corporation (the "Company"), and National
City Bank, as Rights Agent (the "Rights Agent"), to purchase from the Company at
any time after the Distribution Date (as such term is defined in the Rights
Agreement) and prior to 5:00 P.M., New York City time, on November 4, 2009 at
the office or agency of the Rights Agent designated for such purpose, or of its
successor as Rights Agent, one one-thousandth of a fully paid non-assessable
share of Series A Junior Participating Preferred Stock, par value $.01 per share
(the "Preferred Stock"), of the Company at a purchase price of $60.00 per one
one-thousandth of a share of Preferred Stock (the "Purchase Price"), upon
presentation and surrender of this Right Certificate with the Form of Election
to Purchase duly executed. The number of Rights evidenced by this Rights
Certificate (and the number of one one-thousandths of a share of Preferred Stock
which may be purchased upon exercise hereof) set forth above, and the Purchase
Price set forth above, are the number and Purchase Price as of _______ ___,
2002, based on the Preferred Stock as constituted at such date. As provided in
the Rights Agreement, the Purchase Price, the number of one one-thousandths of a
share of Preferred Stock (or other securities or property) which may be
purchased upon the exercise of the Rights and the number of Rights evidenced by
this Right Certificate are subject to modification and adjustment upon the
happening of certain events.

     4. Effectiveness.

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     This Amendment shall be deemed effective as of November 7, 2002. Except as
amended hereby, the Rights Agreement shall remain in full force and effect and
shall be otherwise unaffected hereby.

     5. Miscellaneous.

     This Amendment shall be deemed to be a contract made under the laws of the
State of Delaware and for all purposes shall be governed by and construed in
accordance with the laws of such state applicable to contracts to be made and
performed entirely within such state. This Amendment may be executed in any
number of counterparts, each of such counterparts shall for all purposes be
deemed to be an original, and all such counterparts shall together constitute
but one and the same instrument. If any term, provision, covenant or restriction
of this Amendment is held by a court of competent jurisdiction or other
authority to be invalid, illegal, or unenforceable, the remainder of the terms,
provisions, covenants and restrictions of this Amendment shall remain in full
force and effect and shall in no way be affected, impaired or invalidated.

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     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed as of the date set forth above.

                                    PACTIV CORPORATION

                                    By: /s/ James V. Faulkner, Jr.
                                        ---------------------------
                                    Name:  James V. Faulkner, Jr.
                                    Title:  Vice President and General Counsel

                                    NATIONAL CITY BANK

                                    By: /s/ Victor W. LaTessa
                                        ----------------------
                                    Name: Victor W. LaTessa
                                    Title: Vice President

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