Document:

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                                                                  Exhibit 10-k-5

                                            ***TEXT OMITTED AND FILED SEPARATELY
                                                CONFIDENTIAL TREATMENT REQUESTED
                            UNDER 17 C.F.R. SECTIONS 200.80(b) (4) AND 240.24b-2

                               AMENDMENT NO. 4 TO
                    CAPACITY & RESERVATION DEPOSIT AGREEMENT

      THIS AMENDMENT NO. 4 TO THE CAPACITY & RESERVATION DEPOSIT AGREEMENT
("AMENDMENT NO. 4") amends and supplements the Capacity & Reservation Deposit
Agreement (the "CAPACITY AGREEMENT") and is made and entered into by and
between Conexant Systems, Inc., a Delaware corporation ("CONEXANT") and UMC
USA, a California corporation ("UMC USA") as of August 24, 2001 (the "AMENDMENT
NO. 4 EFFECTIVE DATE"). All capitalized terms used in this Amendment No. 4 and
not otherwise defined herein shall have the meaning defined in the Capacity
Agreement.

                                    RECITALS

      Pursuant to mutually agreed terms, Sections 4.3 and 5.3 of the Capacity
Agreement were amended on March 24, 2000 ("AMENDMENT NO. 1"). Section 4.1.1 of
the Capacity Agreement was amended on or about September 25, 2000 ("AMENDMENT
NO. 2"). Sections 3.2 and 3.4 of the Capacity Agreement were amended and a new
Section 6.1.1 was added to the Capacity Agreement on or about May 17, 2001
("AMENDMENT NO. 3").

      The parties now desire to further amend and supplement the Capacity
Agreement in accordance with the terms and conditions set forth herein to
provide UMC USA the first right of refusal to certain of Conexant's advanced
CMOS Requirements in consideration for specified Wafer credits and a revision of
terms on the Deposit paid by Conexant to UMC USA under the Capacity Agreement
remaining as of the Amendment No. 4 Effective Date.

                                 AMENDMENT NO. 4

The Capacity Agreement is amended as follows:

SECTION 1   DEFINITIONS

Delete Section 1.1 and substitute the following as new Section 1.1:

1.1 "AGREEMENT PERIOD" means the time period commencing upon the Amendment No. 4
Effective Date, and, if not extended by mutual agreement, ending on December 31,
2006, or upon earlier termination of this Agreement, whichever comes first.

Add the following as new definitions:

1.5   "CONEXANT'S ADVANCED CMOS REQUIREMENTS" means all [***] CMOS wafer
requirements for Conexant [***].

1.6   [***]

1.7 "FOUNDRY AGREEMENT" shall mean that Agreement between UMC USA and Conexant
dated July 27, 2000.

1.8   "BASE PRICE" shall mean [***].

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NEW SECTION 2A CONEXANT ADVANCED CMOS REQUIREMENTS, UPSIDE AND NEW TECHNOLOGY
ACCESS. The following new section is incorporated after Section 2:

2.A.  CONEXANT ADVANCED CMOS REQUIREMENTS, UPSIDE AND NEW TECHNOLOGY ACCESS.

2.A.1 This Section 2.A. applies only to Conexant's Advanced CMOS Requirements
during the period ending (i) for [***] processes five years and three months
after the Amendment No. 4 Effective Date and for [***] and below processes five
years and six months after the Amendment No. 4 Effective Date, or (ii) upon the
earlier termination of this Agreement and all benefits to a party under this
Section 2.A. are subject to compliance by that party with all material
obligations to the other under this Agreement and under the Foundry Agreement.

2.A.2 Upon the qualification of the applicable manufacturing process(es) at UMC,
Conexant agrees that it shall cease to run any further Advanced CMOS wafers
[***] for Products to be manufactured with such process(es) at any Conexant
Affiliate and/or at any Conexant owned, operated or joint ventured wafer
fabrication facility, including without limitation at its Newport Beach,
California fabrication facility ("Newport Beach").

2.A.3 Conexant agrees that its [***] products/designs which have been
historically running at UMC shall continue to be supplied at either its Newport
Beach facility or at UMC. In particular, subject to the terms of this Agreement,
Conexant agrees that all [***] products/designs which have been taped out and/or
made at any UMC facility shall not be transferred to any facility other than one
owned or controlled by UMC, UMC Affiliates, and/or Conexant.

2.A.4 UMC and Conexant shall each exert their commercially reasonable best
efforts to qualify Conexant Advanced CMOS Products in UMC fabrication facilities
as soon as practically possible, provided that such qualification does not
adversely materially impact Conexant's new product introduction schedule. In
order to expedite the transition to UMC from other foundries, including Newport
Beach, UMC shall provide [***] to Conexant one standard corner lot per
new-to-UMC-product mask set and three standard process qualification lots per
new process: (a) for [***] products for three months from the Amendment No. 4
Effective Date; and (b) for [***] products for six months from the Amendment No.
4 Effective Date.

2.A.5 Conexant will offer UMC USA a first right of refusal ("FROR") to fulfill
[***] of Conexant's Advanced CMOS Requirements during the term of the Agreement.
Subject to UMC's commercially reasonable best efforts to cooperate fully in the
transition process, for [***] products, this FROR shall commence three months
after the Amendment No. 4 Effective Date. For [***] products, the FROR shall
commence six months after the Amendment No. 4 Effective Date. This FROR is
subject to the following exceptions:

      (a)   nothing in this Agreement will prohibit Conexant from purchasing
            Advanced CMOS wafers from third parties to the extent that and for
            the time in which UMC fails, or is unwilling or unable (for reasons
            other than a failure by Conexant to comply with the terms of this
            Agreement or of the Foundry Agreement), to fulfill Conexant's
            Advanced CMOS Requirements on time and at any time (provided however
            that this Clause 2.A.5(a) is subject to Section 2.A.7);

      (b)   nothing in this Agreement will prohibit Philsar Semiconductor from
            purchasing CMOS wafers as required in order to comply with the
            agreement between Philsar Semiconductor Inc. (a wholly-owned
            subsidiary of Conexant) and IBM dated December 17, 1998;

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      (c)   nothing in this Agreement will prohibit Conexant from purchasing
            CMOS wafers produced by third parties to the extent required by
            contracts to which Conexant becomes a party as a result of a merger,
            acquisition or similar transaction or series of transactions, but
            only to the extent of the business acquired, and/or obtained in such
            a combination, and any natural growth of such business.

2.A.6 Subject to the provisions of this Agreement and the other requirements of
the Foundry Agreement, Conexant will submit purchase orders to UMC USA for [***]
of Conexant's Advanced CMOS Requirements. To exercise its right of first
refusal, UMC USA must respond within the time allowed and in the manner stated
under the Foundry Agreement for this work.

2.A.7 If at any time UMC (for reasons other than a failure by Conexant to comply
with the terms of this Agreement or of the Foundry Agreement) (a) does not
provide timely written acknowledgement to meet the delivery date requested for a
specified type of CMOS wafer, (b) fails to timely deliver a specified type of
CMOS wafer ordered by Conexant and agreed to be supplied by UMC, or (c) is
otherwise unable or unwilling to fulfill Conexant's Advanced CMOS Requirements
for a specified type of CMOS wafer, Conexant may, at its sole discretion, cancel
any unfulfilled purchase order(s) for such specified type of CMOS wafers for the
volumes involved and purchase some or all of Conexant's Advanced CMOS
Requirements for such specified wafers and volumes from any supplier or
suppliers for a period up to [***] from the date of establishment of such
supplier or suppliers as an alternate CMOS wafer source. At the end of such
[***] period, Conexant will transition Conexant's Advanced CMOS Requirements
purchases for such specified type of CMOS wafer volumes back to UMC USA;
provided that UMC USA agrees to accept the transition and pays any Transition
Costs reasonably incurred by Conexant in such transition.

2.A.8 Notwithstanding anything to the contrary contained herein, Conexant shall
not be obligated under this Agreement to split or divide production of product
made with the same mask set amongst two or more different wafer fabrication
facilities. For example, if UMC cannot meet Conexant's CMOS Requirements in the
manner stated in this Agreement for a specific product, Conexant shall not be
required to split the production of that product between UMC and a third party
supplier. Rather, if commercially reasonable to do so, Conexant may source all
relevant volumes of that specific product for which Conexant offered UMC a right
of first refusal from third parties in the manner provided in this Agreement.

2.A.9 During the period of this Agreement, and subject to Conexant purchasing
over the then most recent [***] a minimum of [***] of the average of the one
year earlier forecasted demand by Conexant for the applicable Conexant's
Advanced CMOS Requirements, UMC shall meet the then provided Conexant written
forecasts for Conexant Advanced CMOS Requirements for the quarter commencing
[***] after UMC's receipt of such forecast, with the understanding that this
commitment shall extend on a rolling basis, quarter by quarter, on the terms
described for the period stated. To the extent Conexant fails over the then most
recent [***] to purchase such minimum, UMC's minimum commitment for Conexant's
Advanced CMOS Requirements shall be the average over the applicable then most
recently concluded [***]. During the period of this Agreement, and subject to
Conexant compliance with its material obligations under this Agreement and its
provision of reasonably accurate forecasts of actual demand, UMC agrees to
perform its commercially reasonable best efforts to meet Conexant upside demand,
and [***].

2.A.10 Conexant shall be entitled to select its vendor for mask making services
from any UMC qualified source reasonably acceptable to Conexant.

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2.A.11      [***]

2.A.12 UMC at its own expense and cost, shall have the right to have an
independent, certified public auditor (chosen from the following list: Arthur
Andersen, Price Waterhouse-Cooper, KPMG, Ernst & Young, and Deloitte & Touche,
and no more than once in each annual basis period during normal business hours)
audit Conexant's books and records, subject to reasonable confidentiality
provisions, for the prior four (4) quarters to ensure Conexant's compliance with
this Clause 2.A. Conexant shall cooperate fully with all such reasonable audit
requests. Both parties will review the results of the audit and determine the
restitution, if any, within thirty (30) days after the completion of such audit,
with the express understanding that if the audit shows any material shortfall by
Conexant in its obligations with respect to such quantities, Conexant shall
immediately repay to UMC-USA all wafer credits received/applied during such
quarters.

SECTION 2 PRODUCTION OF FOUNDRY PRODUCT. The second sentence of Section 2.2 is
hereby modified in its entirety to read: "The capacity guarantees and other
promises made under this Agreement and Amendment No. 4 are personal to Conexant,
and are nontransferable and nonassignable, except as otherwise expressly stated
in this Agreement, as amended, and/or to a successor to all or substantially all
of the business or assets of Conexant."

SECTION 3 DEPOSIT AND CREDITS.  The following new section is incorporated as
Section 3.7:

3.7 Subject to Conexant's compliance with its material obligations under this
Agreement and the Foundry Agreement, the remaining Deposit shall be applied to:
[***] This Section 3.7 shall survive any termination of expiration of this
Agreement.

SECTION 4 PRICING, CREDITS & TERMS.  The following new sections are
incorporated as Sections 4.4 and 4.5:

4.4. UMC-USA shall offer Conexant wafer credits against purchases of Conexant
Advanced CMOS Requirements under the terms of the Foundry Agreement and this
Amendment No. 4 in the manner described in this Section 4.4.

      4.4.1 Subject to Conexant's written certification that it met its
            obligations under Section 2.A above for the previous quarter, and
            that its forecasts meet those obligations for their applicable
            quarters, and commencing three months after the Amendment No. 4
            Effective Date, and continuing for five years thereafter, UMC-USA
            shall offer Conexant wafer credits against purchase orders issued by
            Conexant for Conexant Advanced CMOS Requirements under this
            Amendment No. 4 in amounts as stated in 4.4.2 below.

      4.4.2 The amount of the wafer credit under this Amendment No. 4 shall be
            as set forth below.

                                         [***]

      4.4.3 The maximum wafer credit per wafer provided to Conexant shall be
            that provided in Section 3.7 plus that in Section 4.4.2. The wafer
            credits provided to Conexant under Section 4.4 and under Section 3.7
            of the Agreement for a wafer cannot be combined or cumulated with
            any wafer credits from any other agreement between the parties or
            from any other source.

4.5   4.5.1 For all Conexant Advanced CMOS Requirements wafers purchased under
            this Agreement, UMC USA shall provide Conexant with a Base Price.

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      4.5.2 Conexant at its own expense and cost, reserves the right to have an
            independent, certified public auditor, chosen from the following
            list: Arthur Andersen, Price Waterhouse-Cooper, KPMG, Ernst & Young,
            and Deloitte & Touche, on an annual basis during normal business
            hours, to audit UMC's books and records, subject to reasonable
            confidentiality provisions, for the prior four (4) quarters to
            ensure UMC's compliance with this Base Price clause. UMC shall
            cooperate fully with all such reasonable audit requests. Both
            parties will review the audit and determine the restitution, if any,
            within thirty (30) days after the completion of such audit

SECTION 6 GENERAL. The first paragraph of Section 6.2 is modified as follows and
the following new sections are hereby incorporated as Sections 6.4 and 6.5 and
6.6:

6.2 The terms and conditions of the Reciprocal Non-Disclosure Agreement Modified
Exclusively for Conexant and dated December 31, 1998 are incorporated herein by
reference. The terms of this Agreement, including any amendments thereto, are
confidential and shall not be disclosed to any third party except:

6.4   6.4.1 [***]

      6.4.2 [***]

      6.4.3 [***]

6.5 Except as otherwise expressly provided in this Agreement, neither party
shall assign or transfer this Agreement or all or any part of its rights or
obligations hereunder, by operation of law or otherwise, without the prior
written consent of the other party.

      6.5.1 Notwithstanding the foregoing, to the extent Conexant and UMC and
            UMC-USA agree that Conexant's Advanced CMOS Requirements can be
            served by a UMC Affiliate, capacity served by such Affiliate will be
            treated as if it were capacity served by UMC and UMC-USA pursuant to
            the terms of this Agreement.

      6.5.2 Notwithstanding the foregoing, Conexant may assign this Agreement in
            whole or in part, including any of its rights and obligations under
            this Agreement, (i) to [***]; to [***]; or to [***]. Any
            unauthorized assignment or transfer shall be null and void. This
            Agreement shall be binding upon and inure solely to the benefit of
            each party and its successors and permitted assigns.

6.6 The parties agree that for the first year after the Amendment No. 4
Effective Date, any material breach by either of them of their respective
loading, pricing and/or support obligations under this Amendment No. 4 which is
not corrected within 30 days of written notice of breach by the other, will
impose damages on the non-breaching party in amounts which are difficult and/or
impossible to measure and/or compensate. Accordingly, the parties agree that in
such an instance, and subject to the dispute resolution mechanisms stated in the
Capacity Agreement, the non-breaching party shall be entitled to the greater of
a damage award of [***], provided however that if the injured party can prove
damages in excess of [***], the injured party may elect instead to collect such
actual damages. After the initial one year period from the Amendment No. 4
Effective Date, the non breaching party shall be entitled to its actual damages
only for any uncured material breach of this Agreement.

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EFFECT OF AMENDMENT NO. 4.  All terms and conditions of the Capacity Agreement,
as previously amended, shall remain in full force and effect, unless expressly
supplemented, or modified by this Amendment No. 4.  In the event of any
inconsistency or conflict between the terms and conditions of this Amendment
No. 4 and the Capacity Agreement as amended by Amendment No. 1, Amendment No.
2, or Amendment No. 3, the terms and conditions of this Amendment No. 4 shall
govern and control.

ENTIRE AGREEMENT.  This Amendment No. 4, in conjunction with the Capacity
Agreement and Amendment No. 1, Amendment No. 2, and Amendment No. 3, is the
entire agreement between the parties with respect to the stated subject matters
therein and supersedes all prior understandings and agreements with respect to
these matters.  This Amendment No. 4 may not be modified, except in writing
signed by a duly authorized officer of each party, and no addition, deletion or
modification shall be binding on a party unless expressly agreed to in a
writing signed by an officer of that party.

IN WITNESS WHEREOF, the parties have authorized their undersigned
representatives to sign this Amendment No. 4 and to bind them to its terms.

      CONEXANT SYSTEMS, INC.:

      /s/ Dwight W. Decker
      ------------------------------

      August 24, 2001

      UMC:

      /s/ [Signature Illegible]
      ------------------------------
      August 24, 2001

      UMC - USA:

      /s/ [Signature Illegible]
      ------------------------------
      August 24, 2001

                                       6<PAGE>
                                                                  Exhibit 10-k-6

                                            ***TEXT OMITTED AND FILED SEPARATELY
                                                CONFIDENTIAL TREATMENT REQUESTED
                            UNDER 17 C.F.R. SECTIONS 200.80(b) (4) AND 240.24b-2

                                FOUNDRY AGREEMENT
                 MODIFIED EXCLUSIVELY FOR CONEXANT SYSTEMS, INC.
                                  CONFIDENTIAL

This Foundry Agreement (the "Agreement") is entered into this 27th day of July,
2000 (the "Effective Date") by and between Conexant Systems, Inc. on behalf of
its Affiliates (as that term is defined below), a corporation having its
principal place of business at 4311 Jamboree Road, Newport Beach, CA 92660-3095
("Conexant") and UMC Group (USA), a California corporation having its principal
place of business at 488 DeGuigne Drive, Sunnyvale, California, 94086 ("UMC"),
for provision of foundry services to be performed by United Microelectronics
Corporation, a Republic Of China ("ROC") corporation ("Manufacturer"). This
Agreement applies to all purchase orders furnished by Conexant to UMC on or
after March 20, 2000. This Agreement shall, with respect to all terms and
conditions governing said purchase orders, supersede UMC's Wafer Foundry
Standard Terms and Conditions as modified for Conexant pursuant to the Side
Letter attached as Exhibit D to the Capacity Reservation and Deposit Agreement
entered between the parties on March 20, 2000 (the "Capacity Agreement"),
however, the Capacity Agreement shall remain in full force and effect. Any
inconsistency between this Agreement and the Capacity Agreement shall be
resolved in favor of this Agreement.

                                    RECITALS

A.         WHEREAS, UMC is in the business of furnishing integrated circuit
manufacturing services performed by Manufacturer, which shall perform, at UMC's
request, the manufacturing services contracted for with UMC hereunder;

B.         WHEREAS, Conexant desires to have UMC furnish integrated circuit
manufacturing services for it;

NOW, THEREFORE, in consideration of the following covenants and conditions the
parties agree:

1          DEFINITIONS

1.1        As to Conexant, an "Affiliate" shall mean an entity controlling,
           controlled by, or under common control of Conexant, subject to
           request by Conexant, and provided that such entity shall be
           considered an Affiliate only for the time during which such control
           exists, and in any event subject to the written agreement between the
           parties as to the terms under which each proposed affiliate shall be
           added to the coverage of this Agreement. While UMC may not
           unreasonably withhold consent to a Conexant request to add an entity
           as an Affiliate, UMC may require that the Affiliate be added in such
           a manner as will ensure clarity with respect to (1) any then-existing
           foundry or other agreements between the proposed affiliate and UMC;
           (2) any then-outstanding forecasts, purchase orders, or capacity
           commitments to or from the proposed affiliate; and (3) responsibility
           for payment for any then-pending orders or invoices affecting the
           proposed affiliate. For purposes of this definition "control" shall
           mean ownership or control, either directly or indirectly, of greater
           than 50% of the voting rights of such entity.

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1.2        An "ECN" shall mean a form or letter provided by one party to the
           other in the event a party anticipates a change in a Product (in
           Conexant's case) or process (in UMC's case) which change may affect
           physical, electrical or performance characteristics in a Product (in
           the case of an anticipated change to a process) or result in changes
           in one or more masks or reticles (in the case of an anticipated
           change to a Product).

1.3        "Products" shall mean the products to be manufactured pursuant to
           this Agreement as specified in Quotation(s).

1.4        "Quotation(s)" shall mean the quotations attached hereto as Exhibit A
           and such further quotations as are issued in writing by UMC and
           accepted via a purchase order issued in writing by Conexant. Each
           such Quotation shall describe the Products to be manufactured,
           prices, fees and charges for the Products, all aspects of, and
           services needed for, mask making, testing, assembly and packaging,
           and all other specifications, quantities, cycle and lead times and
           parameters for the Products. Prices shall be separately itemized for
           mask sets, processed wafers, wafer probe, assembly and final test.
           All acceptance criteria for Products ("Acceptance Criteria") shall be
           described in Exhibit B of this Agreement.

2          PRODUCTION PROCEDURES

2.1        Product Prototype Approval. No Product prototypes shall be
           manufactured except pursuant to a Quotation issued in writing by UMC
           and accepted in writing by Conexant and UMC. For each Quotation for a
           new Product agreed upon by the parties, Conexant will deliver a tape
           or electronic file by, e.g., File Transfer Protocol ("FTP") in GDS II
           format or a mask set. If Conexant provides its design in the form of
           a tape or electronic file, then upon receipt of the data from
           Conexant, UMC, or its Conexant-approved subcontractors, will produce
           a mask set. In either case, UMC will produce one or more pilot wafer
           runs according to the schedule and at the price set forth in the
           Quotation. Within ninety (90) days after receipt of pilot run wafers
           for a new Product, Conexant may return any claimed non-conforming
           pilot wafers to UMC with a written rejection statement specifying the
           alleged failure or failures of the pilot wafers to meet the
           Acceptance Criteria set forth in the Quotation or issue a written
           approval of the pilot wafers. If Conexant does not return the pilot
           wafers with a written rejection statement within such ninety (90) day
           period and fails to furnish a written approval, then UMC shall
           contact Conexant to determine the cause for the lack of response. If
           any pilot wafer does not meet the Acceptance Criteria for reasons
           attributable to UMC and is rejected by Conexant, UMC shall, at
           Conexant's option and at UMC's expense, use commercially reasonable
           efforts to rerun the pilot wafers and resubmit the results in a
           manner that complies with the Acceptance Criteria. If UMC, within
           ninety (90) days after receipt of Conexant's timely written rejection
           report, is unable to supply Conexant with conforming pilot wafers,
           then either party may by written notice to the other terminate this
           Agreement as to such Product and Quotation, and if so terminated,
           Conexant will not owe UMC any amounts for the pilot wafers involved
           unless the noncompliance was substantially attributable to Conexant.

2.2        ECNs.

2.2.1      Conexant ECNs. After initial qualification, Conexant shall have the
           right to make such changes as it deems appropriate to the design of
           Products to be fabricated for it by UMC, provided however that each
           such change must be timely documented by

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<PAGE>

           Conexant through written change notices. Notwithstanding anything to
           the contrary, after process qualification runs for a particular
           design have been made and approved by UMC and Conexant, any
           Conexant-requested changes to design, process or materials for such
           Products shall be subject to UMC's consent (which will not be
           unreasonably withheld) and payment by Conexant of applicable
           reasonable costs, if any, related to such change.

2.2.2      UMC ECNs. For changes that UMC and Conexant mutually agree to make,
           the following procedure shall apply:

2.2.2.1    Routine Changes. UMC may make changes in the processes used to
           manufacture Products (i) that do not materially affect physical or
           functional interchangeability or performance; or (ii) when required
           for purposes of safety and/or compliance with applicable law or
           regulations.

2.2.2.2    Material Changes.

2.2.2.2.1  UMC shall give Conexant ninety (90) days advance written notice of
           any proposed change(s) ("Proposed Change Notice") in materials and/or
           to the manufacturing processes qualified for production of Products,
           which, to the best of UMC's knowledge, might affect the form, fit,
           performance, maintainability, operation, function, reliability,
           interface, interconnectability, compatibility, design rules, models,
           or size, or which might adversely affect yields of the chips for
           Products then qualified and subject to open purchase orders from
           Conexant.

2.2.2.2.2  Such Proposed Change Notice shall describe the nature of the proposed
           change(s), including reasons for the change(s), the anticipated
           schedule for implementation of the change(s), and other relevant
           technical and logistic considerations, including without limitation
           quality and reliability data to the extent available.

2.2.2.2.3  Conexant shall approve or disapprove any such proposed change
           promptly, but in no event may any such change be disapproved later
           than fifteen (15) business days after receipt of the Proposed Change
           Notice. To the extent Conexant approves a proposed change, Conexant
           shall nonetheless have ninety (90) days from receipt of a reasonable
           number of samples of changed Product to reject the changed Products,
           if such changed Products fail to meet the Acceptance Criteria.

2.2.2.2.4  If Conexant disapproves such proposed change within the fifteen (15)
           business day period or the ninety (90) day period described in the
           immediately preceding section, UMC shall fill all then-accepted
           Conexant purchase orders with unchanged Products in accordance with
           the applicable Agreements and shall continue to deliver such
           unchanged Products pursuant to such accepted purchase orders for a
           minimum of [***] from the date Seller issued the Proposed Change
           Notice.

2.2.2.2.5  Upon the expiration of three (3) months after the issuance by UMC of
           a Proposed Change Notice which is rejected by Conexant, UMC, in its
           discretion and by then giving a minimum of twelve (12) months prior
           written notice to Conexant, may stop manufacture and delivery of all
           Products involved (except to the extent purchase orders for such
           Products have at that time been accepted) without liability.

                                                                           - 3 -
<PAGE>

2.2.3       Quality Assurance. Conexant's quality assurance requirements are
            described in Exhibit C. Any additional quality assurance
            requirements or measurements (whether cv plots, metal step coverage
            analysis, SEM analysis, or other) shall be as agreed in writing,
            with costs for such additional requirements or measurements, if any,
            to be allocated as agreed in writing.

2.3        Risk Production and Volume Production. Prior to shipping wafer lots,
           UMC will meet the following criteria:

           (a) Wafer Lot Identification - All Production Lots shipped to
           Conexant must be scribed with the correct Lot identification number
           as provided by Conexant. The wafer scribe shall meet the
           specification as defined by Conexant

2.4        Work-In-Process (WIP) Report.

           (a) UMC shall provide Conexant an updated WIP lot location report at
           least once every week through e-mail or "FTP" or accessible, by
           password, through UMC's website.

           (b) UMC shall provide Conexant a ship alert via fax or E-mail within
           one (1) day after a shipment is made. The ship alert shall include
           the Airway bill number, number of boxes shipped, as well as the
           information given on the packing list.

2.5        Production Runs, Pilot Runs, Hot Runs, etc. Exhibits A and D set
           forth the terms applicable to Product Cycle Time, Pilot Runs, Hot
           Lots, Production Runs and On Hold.

3          ORDER, DELIVERY, PRICING AND PAYMENT TERMS

3.1        Forecasts and Additional Capacity Requests.

3.1.1      Conexant will comply with the forecasting requirements described in
           the Capacity Agreement with respect to orders for Product to be
           manufactured from the Allocated Production Capacity, as defined in
           that Agreement, provided that each forecast for such capacity shall
           be clearly marked as relating to "Allocated Production Capacity".

3.1.1.1    With respect to any additional capacity to be requested by Conexant,
           whether during the term of the Capacity Agreement or thereafter,
           forecasting requirements shall be as follows: During the first seven
           (7) calendar days of each month, Conexant will provide to UMC by
           facsimile or other electronic communication a written rolling
           forecast of its wafer capacity requirements from UMC's facilities for
           the next six (6) full calendar months (each a "Conexant Forecast").

3.1.1.2    Each such Conexant Forecast shall show the quantity of wafer outs and
           the specific technology and/or process for the wafers listed.
           Conexant shall make good faith efforts to ensure that all such
           Conexant Forecasts are reasonable estimates of its anticipated needs.
           Subject to this obligation, and except as expressly stated in this
           Section 3.1.1 and/or in a written capacity quotation, all such
           Conexant Forecasts (and any responses to them) will be for planning
           purposes only, and will not create any obligation to purchase and/or
           sell.

                                                                           - 4 -
<PAGE>

3.1.1.3     Each such Conexant Forecast shall constitute a commitment by
            Conexant to purchase a minimum of the following percentages of the
            amounts indicated:

                                      [***]

3.1.1.4     UMC will provide a written response to each Conexant forecast within
            three (3) business days of UMC's receipt. Subject to Section 3.1.2
            below and the other terms set forth in this Agreement, UMC's
            response shall accept the quantities in the applicable months to the
            extent they are less than or equal to those accepted by UMC for the
            applicable month(s) pursuant to prior written agreement and/or
            forecasts. Subject to the right of first refusal extended by Section
            2.2 of the Capacity Agreement, UMC's response may accept and/or
            reject in whole or in part any additional forecast quantities for
            those months.

3.1.2       To the extent that any forecast from Conexant pursuant to Section
            3.1.1 above fails to forecast the full capacity or quantity if any,
            allocated or promised to Conexant during any one or more of the
            first [***]: (i) UMC shall be entitled in its sole and complete
            discretion to enter commitments with others for such unexercised
            capacity for the applicable months and in the amounts not so
            exercised, and (ii) Conexant will not have any right to require UMC
            to provide that unexercised capacity to Conexant in the month(s)
            involved.

3.2         Orders And Production Release. No order for production quantities of
            a Product shall be placed by Conexant unless and until Conexant has
            approved the pilot runs or prototypes for the Product. If Conexant
            places an order for production quantities of a Product in accordance
            with the provisions of this Agreement, UMC may deem such an order as
            written production release approval for such Product. All orders for
            Products shall be in writing. UMC shall acknowledge in writing,
            within three (3) business days of receipt of an order its rejection
            or any modification of the order by either fax or, (if provided),
            e-mail notice to Conexant's Purchasing agent identified on the face
            of the purchase order. Other than variances in quantities ordered,
            no acceptance of a purchase order shall constitute acceptance of any
            terms at variance with this Agreement, the Capacity Agreement (where
            applicable) and/or previously agreed forecasts, and purchase orders
            shall be null and void as to those variances.

3.3         Cancellation and Modifications to Orders.

3.3.1       Cancellations and Modifications. Unless wafer processing has
            started, or UMC has incurred significant engineering or tooling
            charges, Conexant may cancel or modify a purchase order without
            penalty (except as provided in the Capacity Agreement) by delivering
            to UMC a written notice of cancellation or modification; provided
            however that no such cancellation will relieve Conexant of any
            obligations under any other applicable provisions or agreements.

3.3.2       Cancellation Charges. In addition to, and without waiving any other
            remedies, the charges for order cancellation shall be the contract
            price (less the cost of the starting materials and, if applicable,
            mask sets) multiplied by the proportion of the relative mask step at
            which the wafer(s) were at the time of cancellation, plus all costs
            of starting wafer materials and, if applicable, mask sets.

                                                                           - 5 -
<PAGE>

3.3.3      Partially Completed Products. In the event Conexant cancels an order
           after wafers have been started, but prior to completion, or wafers
           are determined to be defective prior to shipment to Conexant, or
           wafers are returned to UMC because they fail to meet the Acceptance
           Criteria, UMC shall retain custody, subject to Conexant's
           intellectual property rights and UMC's obligations of
           confidentiality, to the partially completed or defective wafers, and
           may destroy such wafers, or use them solely for internal
           manufacturing-process testing and evaluation purposes.

3.4        Delivery.

3.4.1      Delivery will be made FCA (Incoterms 2000), Manufacturer's plant, to
           Emery Worldwide or such other carrier as is identified by Buyer to
           the following address whenever practicable, or to such other address
           as is supplied in writing by Conexant:

              Conexant Systems, Inc.-NPB
              Conexant Systems, Inc.
              4311 Jamboree Road
              Newport Beach, CA 92660
              Attn:  QA Receiving

           Packing Slip/Invoice Instructions. To ensure prompt payment, the
           Packing Slip and Invoice must contain the following information:

              Purchase Order Number
              Line Number Reference
              Conexant Product Description
              Conexant Lot Number
              Quantity Shipped

           Billing Information. Invoices shall be sent to:

              Conexant Systems, Inc.
              4311 Jamboree Road, PO Box C
              Newport Beach, CA 92658-8902
              Attn:   Accounts Payable
              Phone:  (949) 483-4437
              Fax:    (949) 483-4870

3.4.2      Packing Instructions are set forth in Exhibit F.

3.4.3      Title to the Products will pass to Conexant upon delivery to carrier.

3.4.4      All shipping and delivery dates are subject to timely receipt by UMC
           of fully-approved mask sets and fully-completed purchase orders.

3.4.5      [***]

3.4.5.1    [***]

3.4.5.2    [***]

                                                                           - 6 -
<PAGE>

3.4.5.3    [***]

3.4.6      In the event of any delays and/or any breach of any written warranty,
           Conexant may, without liability to Conexant, give prompt written
           notice to UMC, adjusting forecasted and/or ordered amounts, and/or
           canceling orders for affected Products, to the extent necessary as a
           result of any impact of such delay on Conexant's need for such
           Products.

3.5        Pricing.

3.5.1      Unless otherwise agreed in writing, Wafer Price will be exclusively
           as stated in UMC's written Quotation for the Products involved.

3.5.2      Except as to written prices quoted for quantities for delivery within
           one year of UMC's acceptance of the purchase order involved or as
           otherwise agreed in a written firm price commitment signed by UMC,
           UMC may change quantities, times, and prices stated in any Quotation.

3.5.3      Any tax or related charge which UMC shall be required to pay to or
           collect for any government upon or with respect to services rendered
           or the sale, use or delivery of the Product or other materials
           (except for taxes based on UMC 's income) shall be billed to Conexant
           as a separate item and paid by Conexant, unless a valid exemption
           certificate is furnished by Conexant to UMC.

3.6        Payment.

3.6.1      Unless otherwise agreed or stated in UMC's quotation, full payment
           shall be made in U.S. Dollars within 30 days of delivery, except with
           respect to Products that have been properly rejected prior to such
           time.

3.6.2      In the event of late payments or significant changes in Conexant's
           financial condition, UMC reserves the right to change credit terms at
           any time. For orders in excess of Conexant's Allocated Production
           Capacity, as that term is defined by the Capacity Agreement, Conexant
           will issue written purchase orders at least four weeks, plus the
           agreed cycle time, prior to requested wafer out day.

4          RELIABILITY & QUALITY

4.1        Quality Data. Within thirty (30) days of the Effective Date, UMC will
           provide to Conexant its available reliability and quality data
           regarding Products produced for Conexant for the purpose of
           maintaining consistent quality and reliability standards for such
           Products. In addition, Conexant will perform detailed wafer level and
           packaged level quality/reliability tasks before releasing any new
           process or Products to production.

4.2        Traceability. During the term of the foundry relationship and for a
           period of five (5) years thereafter, UMC shall maintain fab and test
           lot traceability for Products manufactured on behalf of Conexant.

4.3        Notification of Defects. UMC will, after discovery, promptly advise
           Conexant of defects and/or non-conformity in Products already shipped
           to and/or in lots currently in manufacture for Conexant.

                                                                           - 7 -
<PAGE>

4.4        Acceptance Criteria. Wafer acceptance will be subject to process
           control monitor acceptance criteria to be mutually agreed upon on in
           a writing signed by both parties which clearly and specifically
           identifies the Products (by mask or product number) and each process
           (by UMC's process designation) involved. All accept/reject criteria
           shall be stated in the agreed upon wafer acceptance and visual
           inspection specifications and all critical dimension and process
           tolerances shall be solely as agreed upon in writing. Any process
           defects resulting from wafer or Product level reliability or quality
           issues shall be subject to Return Material Authorization (RMA) as
           described in Section 4.7.

4.5        Stop Shipments. Subject to Section 5 of the Capacity Agreement, with
           respect to orders comprising Allocated Production Capacity, as
           defined in that agreement, and Conexant's obligations with respect to
           volumes committed under the ordering and forecasting procedures
           involved, UMC will immediately stop shipment and manufacturing, upon
           receipt of Conexant's written request ("Stop Request"), of Products
           which are subject to a suspected failure to meet the criteria
           specified in the wafer acceptance criteria agreed upon in writing
           between Conexant and UMC. If UMC is responsible for such failure, and
           UMC is not able to correct the matter within sixty (60) days of
           receipt of such Stop Notice, then (i) Conexant may reject
           non-conforming Products, and, (ii) Conexant may, without penalty
           (including loss of capacity), cancel any then-pending purchase
           order(s) for such Products as to which wafers have not been started
           by sending written notice of cancellation to UMC within seventy-five
           (75) days of the Stop Request. Such a notice of cancellation shall be
           effective on receipt by UMC.

4.5.1      If Conexant requests UMC to stop shipment of any Products which
           Conexant is obligated to purchase, and the Products are determined in
           good faith by UMC and Conexant to have been processed in accordance
           with the applicable written requirements and industry-standard
           processing except to the extent Conexant's written requirements
           require something other than industry-standard processing, in
           addition to and without waiving any other remedies, Conexant shall
           pay UMC in full for completed Products and, in addition, for UMC's
           reasonable costs for work in progress. Under this Section 4.5 payment
           for completed Products will be at the purchase order price, and
           payment for work in progress shall be based on the formula used in
           Section 3.3.2 for partially completed products.

4.6        Failure Analysis. Upon written request from Conexant and subject to
           satisfactory arrangements for payment to UMC for the reasonable costs
           involved, UMC will perform failure analysis of Products returned to
           UMC with a UMC-issued Return Material Authorization number. If such
           analysis shows the existence of material defects in breach of
           applicable UMC warranties, UMC will not be entitled to payment for
           the cost of UMC's failure analysis concerning such defects for the
           specific Products which were subject to them.

4.7        Return Material Authorization (RMA). Conexant will not make any
           returns to UMC without first obtaining a written RMA. All Production
           Lots delivered by UMC shall be subject to incoming inspection and
           testing on a monitoring basis by Conexant in accordance with the
           Acceptance Criteria set forth in Exhibit B. In the event any lot or
           wafer is found to fail the criteria in Exhibits B Conexant shall have
           the right to reject such lot or wafer within (60) days after receipt
           by Conexant. Conexant shall request an RMA from UMC for such
           material. Conexant agrees to reimburse UMC the full purchase price
           and all shipping and test costs and charges reasonably incurred by
           UMC

                                                                           - 8 -
<PAGE>

           in connection with any returned wafers or Products which UMC
           reasonably determines were within mutually agreed specifications at
           the time of initial delivery to the carrier or at the time of return
           to UMC. Upon verification by UMC of the defect following return of a
           reasonable number of sample defective wafers to UMC, Conexant will
           scrap the rejected wafers at Conexant. In the event that any of the
           Products covered under the warranty of this Agreement fail to conform
           to the agreed specifications of such Product, Conexant shall have the
           option to receive a credit equal to the purchase price or have the
           Product replaced as required by Conexant at that time. Conexant
           agrees to cooperate in good faith with UMC to resolve any problems
           that may arise and to promptly send UMC the results of all tests and
           analyses concerning Products.

5          WARRANTY

5.1        Limited Warranty. UMC warrants Products delivered after initial
           qualification shall be processed (i) using the masks (or duplicates
           of them) which were used for qualification, (ii) within the
           tolerances stated in the Acceptance Criteria's process
           specifications, and (iii) in compliance with applicable Wafer
           Acceptance and/or Yield Criteria agreed to in a writing signed by UMC
           and Conexant.

5.2        Exclusions.

5.2.1      Products which have been subject (other than by UMC) to abuse,
           misuse, accident, alteration, neglect, conditions outside
           specification, unauthorized repair or improper application are not
           covered by any warranty.

5.2.2      UMC shall not be responsible for defects or claims caused by acts not
           performed by UMC or UMC's subcontractors; or by design or
           application; or by combination of Products with other things.

5.2.3      Products are not intended for use in, and no warranty is made with
           respect to, applications where failure to perform can reasonably be
           expected to result in significant injury (including, without
           limitation, navigation, weaponry, aviation or nuclear equipment, or
           for surgical implant or to support or sustain life) and Conexant will
           indemnify, defend, and hold harmless UMC from all claims, damages and
           liabilities arising out of any such matters; provided that UMC: (a)
           provides Conexant with prompt notice of the claim, (b) allows
           Conexant to control the defense and any settlement of the claim, and
           (c) provides cooperation as reasonably requested by Conexant.

5.3        Remedy. To the extent that any Products fail to meet the applicable
           warranties and/or requirements due to reasons for which UMC is
           responsible, UMC shall either, at Conexant's option (i) replace such
           Products without charge, or (ii) refund the payments made to UMC for
           such Products, all within thirty (30) calendar days of UMC's receipt
           of written notice from Conexant of such non-conformity.

5.4        Sole Warranty. This Section 5 is the only warranty by or on behalf of
           UMC and may not be modified or amended except in writing signed by
           UMC and by Conexant. Conexant is not relying upon any warranty or
           representation except for those specifically stated here or in such a
           signed writing. With respect to obligations of UMC under this
           Agreement which would logically be undertaken and/or performed by
           Manufacturer, UMC guarantees Manufacturer's performance thereof.

                                                                           - 9 -
<PAGE>

5.5        No Reliance. Conexant is not relying on any statements or information
           in UMC's literature, and Conexant will test all parts and
           applications under extended field and laboratory conditions as
           appropriate. Notwithstanding any cross-reference or statements of
           compatibility, functionality, interchangeability, and the like,
           UMC-made goods, embedded devices and processes may differ from
           similar goods, devices and processes from other vendors in
           performance, function or operation, or as to matters, ranges and
           conditions not stated in and/or outside UMC's written specifications;
           and Conexant agrees that UMC makes no warranties and is not
           responsible for such things. All reusable IP, including that listed
           in UMC's Intellectual Property Catalog, and including but not limited
           to blocks, libraries, tools, and documentation therefor, is licensed
           to Conexant by the individual IP vendors and not by UMC, and in any
           event UMC makes no warranty in connection with such IP. Conexant is
           not relying on any statements or information provided by UMC in
           connection with such IP, and Conexant will fully verify all IP as
           appropriate and be responsible to ensure that such IP is compatible
           and suitable for Conexant's intended purpose and applications.

5.6        Disclaimer. EXCEPT AS PROVIDED ABOVE, UMC MAKES NO WARRANTIES OR
           CONDITIONS, EXPRESS, IMPLIED, OR STATUTORY, AND EXPRESSLY EXCLUDES
           AND DISCLAIMS ANY WARRANTY OR CONDITION OF MERCHANTABILITY,
           NONINFRINGEMENT, OR FITNESS FOR A PARTICULAR PURPOSE OR APPLICATION.

6          LIMITATION OF LIABILITY

6.1        Force Majeure. Neither party will be liable for any loss, damage or
           claim resulting from causes beyond its reasonable control, including
           but not limited to, war, fire, delay caused by others, material
           shortage, or labor conditions; and in the event of such a
           condition(s), and at Conexant's option, the date(s) for UMC's
           performance may be extended for a period equal to any resulting
           delay.

6.2        Limitation of Liability.

6.2.1      THE PARTIES' LIABILITY ARISING OUT OF ANY QUOTATION, THIS AGREEMENT,
           ANY BREACH THEREOF, OR ANY PRODUCTS OR SERVICES WILL BE LIMITED TO
           REFUND OF THE PURCHASE PRICE OR REPLACEMENT OF PURCHASED PRODUCTS
           (RETURNED TO UMC FREIGHT PREPAID); ALL CLAIMS WILL BE SUBJECT TO THE
           TIME LIMITATIONS STATED IN UMC'S RETURN POLICY AND PROCEDURE.

6.2.2      REGARDLESS OF CAUSE OR REASON FOR DAMAGE (WHETHER ACCIDENT,
           NEGLIGENCE, OR OTHERWISE) NEITHER CONEXANT OR UMC SHALL HAVE ANY
           LIABILITY (DIRECT, CONSEQUENTIAL OR OTHER) FOR, IN CONNECTION WITH OR
           ARISING FROM CONEXANT PROPERTY FURNISHED FOR USE AT OR LEFT AT UMC;
           and by delivering or entrusting property to UMC, both party's
           expressly confirm this limitation. Notwithstanding this limitation,
           UMC will replace, or pay the reasonable retooling costs to replace,
           masks damaged or destroyed as a result of UMC's negligence or fault.
           Upon written request sent to the billing address listed on Conexant's
           latest-dated purchase order, Conexant will promptly take possession
           of any and all property of Conexant, and should Conexant fail to do
           so within thirty days of such request, UMC may destroy or reclaim
           such property without liability.

                                                                          - 10 -
<PAGE>

6.2.3      AS A SEPARATE LIMITATION, AND EXCEPT FOR INDEMNITY OBLIGATIONS AND
           BREACHES OF OBLIGATIONS OF CONFIDENTIALITY, IN NO EVENT WILL ANY
           PARTY TO THIS AGREEMENT BE LIABLE (i) FOR ANY SPECIAL, CONSEQUENTIAL,
           INCIDENTAL OR INDIRECT DAMAGES, OR (ii) FOR LOSS OF USE, LOST
           OPPORTUNITY, MARKET POTENTIAL, GOODWILL AND/OR PROFIT ON ANY THEORY
           (CONTRACT, TORT, FROM THIRD PARTY CLAIMS OR OTHERWISE). THESE
           LIMITATIONS SHALL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL
           PURPOSE OR OF ANY FAILURE OR INADEQUACY OF ANY REMEDY. THIS AGREEMENT
           STATES THE ONLY AND EXCLUSIVE REMEDY FOR ANY AND ALL CLAIMS MADE
           AGAINST ANY PARTY UNDER THIS AGREEMENT AND/OR WITH RESPECT TO WAFERS,
           SERVICES, AND/OR PRODUCTS.

6.3        Commencement of Actions or Proceedings. No action or proceeding may
           be commenced by either party against the other, whether for breach,
           indemnification, contribution or otherwise, more than one year after
           delivery of the Products to the carrier; and no claim may be brought
           unless the non-claiming party has first been given commercially
           reasonable notice, a full written explanation of all pertinent
           details (including copies of all materials), and a good faith
           opportunity to resolve the matter.

7          INDEMNIFICATION & COOPERATION

           [***]

8          CONFIDENTIALITY

8.1        NDA. The terms of the Reciprocal Non-Disclosure Agreement dated
           December 31, 1998, attached hereto as Exhibit E, are expressly
           incorporated herein.

9          TERMINATION & RELATIONSHIPS

9.1        Term. The term of this Agreement as related to any specific Product
           covered by this Agreement shall be three (3) years from the date of
           the Quotation for that Product, and shall thereafter be automatically
           extended for additional one (1) year terms, unless and until a party
           to this Agreement gives no less than one (1) year's notice that the
           term should not be further extended for that Product. If UMC gives
           Conexant notice that the terms for a Product will not be extended,
           then during the one (1) year notice period UMC shall continue to
           accept and fill all orders placed by Conexant for commercially
           reasonable quantities calling for delivery within lead time of that
           Product.

9.2        Termination For Insolvency or Bankruptcy. Subject to Section 9.4
           below, Conexant and/or UMC (collectively "the Parties") shall have
           the right to terminate the rights of the other Party under their
           applicable Agreements (and any other agreement concerning Products)
           by giving written notice of termination to that other Party at any
           time upon or after:

9.2.1      the filing by the other Party of a petition in bankruptcy or
           insolvency;

9.2.2      any adjudication that the other Party is bankrupt or insolvent;

                                                                          - 11 -
<PAGE>

9.2.3      the filing by the other Party of any petition or answer seeking
           reorganization, readjustment or arrangement of its business under any
           law relating to bankruptcy or insolvency;

9.2.4      the appointment of a receiver for all or substantially all of the
           property of the other Party;

9.2.5      the making by the other Party of any assignment for the benefit of
           creditors; or

9.2.6      the institution of any proceeding for the liquidation or winding up
           of the other Party's business or for the termination of its corporate
           charter.

           Notwithstanding anything to the contrary, no termination under
           Section 9.2 as to such other Party shall affect the rights of the
           Party giving the notice of termination with respect to Products
           delivered and/or as to which production had begun prior to the
           effective date of termination. Termination pursuant to this Section
           9.2 shall be effective immediately upon personal delivery of the
           written notice, or in the case of airmail notice, five days after
           dispatch.

9.3        Termination for Breach.

9.3.1      Termination Events. If any party fails to perform or violates any
           material obligation under the applicable Agreements, effective upon
           [***] written notice to the breaching party specifying such default
           (the "Default Notice"), the non-breaching party may terminate the
           applicable Agreement (and all related agreements concerning Products)
           as to its responsibilities and obligations, without liability
           (subject to Sections 9.4 and 9.5 below), unless:

9.3.1.1    The breach specified in the Default Notice has been cured within the
           [***] period, or if the breach is disputed, the amount in dispute is
           placed in a reasonably secure third party escrow account pending
           resolution of the dispute; or

9.3.1.2    The default reasonably requires more than [***] to correct
           (specifically excluding any failure to pay money), and the defaulting
           party has begun substantial corrective action to remedy the default
           within such [***] and diligently pursues such action, in which event,
           termination shall not be effective unless [***] has expired from the
           date of the defaulting party's receipt of the Default Notice without
           such corrective action being completed and the default remedied.

9.3.1.3    In the event and for the duration of any dispute hereunder, except a
           dispute arising out of a failure to pay invoices as they come due or
           regarding alleged violation of intellectual property rights or misuse
           or wrongful disclosure of Confidential Information, both parties
           shall continue to perform their respective obligations (except
           obligations which are themselves the subject of a bona fide dispute
           such as, e.g., an "obligation" to pay a portion of an invoiced amount
           which is in dispute) in a timely and professional manner. In any
           event, both parties shall in good faith perform any obligations
           resulting from the directives of any dispute resolution procedure
           entered by agreement of the parties.

                                                                          - 12 -
<PAGE>

9.4        Effect of Termination.

9.4.1      Termination by Conexant. If Conexant terminates the applicable
           Agreements for any reasons stated in Sections 9.2 and/or 9.3 above,
           UMC will, if so requested in writing by Conexant: (i) cease all
           production required by Conexant's then outstanding purchase orders
           under the Agreements; and/or (ii) otherwise complete and deliver all
           Products pursuant to Conexant's then outstanding and accepted
           purchase orders and invoice Conexant for the Products.

9.4.2      Termination by UMC. If UMC terminates this Agreement as to Conexant
           pursuant to Section 9.3 above, without waiving any other remedy, UMC
           shall be entitled to payment in full upon delivery of all completed
           Products manufactured on behalf of Conexant.

9.5        Survival.

9.5.1      All obligations to pay monies which accrue prior to termination
           and/or expiration, and the provisions of the Reciprocal Non
           Disclosure Agreement attached as Exhibit E, as well as all other
           obligations of confidentiality, all obligations to make delivery of
           accepted orders, all limitations on warranties and remedies, all
           obligations with respect to indemnification and cooperation,
           contribution, dispute resolution, and termination shall survive the
           expiration and/or termination of the applicable Agreements and/or of
           any purchase order or understanding concerning Products.

9.5.2      The exclusions and limitations of Sections 5, 6 and 7 will survive
           the termination of the applicable Agreements, and shall apply
           notwithstanding any claim of a failure of any one or more remedies to
           accomplish their purpose. THE PARTIES EXPRESSLY WAIVE AND RELINQUISH
           ANY CONTRARY RIGHTS UNDER THIS AGREEMENT, AND/OR LAW, DECISION,
           CUSTOM OR PRACTICE.

10         DISPUTE RESOLUTION

10.1       UMC and Conexant shall cooperate and attempt in good faith to resolve
           any and all disputes arising out of and/or relating to any Agreement
           and/or Products.

10.2       Any disputes relating to and/or arising out of this Agreement and/or
           goods which cannot be so resolved will be decided exclusively by
           binding arbitration under procedures which ensure efficient and
           speedy resolution. The specific procedures concerning such
           arbitrations shall be pursuant to the Rules for International
           Arbitrations under the American Arbitration Association. The
           arbitration shall be conducted in the English language in Santa Clara
           County, California, if brought by Conexant, and in Orange County,
           California, if brought by UMC, before a panel of three neutral,
           independent arbitrators. Notwithstanding anything to the contrary:

10.2.1     the arbitrators will have no power to order discovery;

10.2.2     the arbitrators will follow such procedures and enter such orders and
           conduct the hearing under conditions which ensure at least the same
           degree of confidentiality for each party as provided by whatever
           nondisclosure agreement is in effect between the parties at the time
           of the arbitration, and which adequately protect the participants
           from disclosure of highly sensitive information to anyone other than
           the arbitrators and

                                                                          - 13 -
<PAGE>

           lawyers (or comparable legal representatives) and reasonably
           necessary expert witnesses and not to persons employed by one or more
           of the parties nor to competitors of them, and

10.2.3     the arbitrators shall require pre-hearing exchange of documentary
           evidence to be relied upon by each of the respective parties in their
           respective cases in chief, and pre-hearing exchange of briefs,
           witness lists and summaries of expected testimony.

10.3       The arbitrators will make their decision in writing; and their
           decision will be binding upon the Parties and it may be entered by
           any court having jurisdiction.

10.4       Notwithstanding anything to the contrary, any party may apply to any
           court of competent jurisdiction for interim injunctive relief with
           respect to irreparable harm which cannot be avoided and/or
           compensated by such arbitration proceedings, without breach of this
           Section 7 and without any abridgment of the powers of the
           arbitrators.

10.5       Governing Law. This Agreement and all foundry arrangements involving
           UMC and all performance and disputes arising out of and/or relating
           to such matters and/or any Products involved will be governed by the
           laws of California and the United States of America, without
           reference to conflicts of laws principles, and/or any contrary
           provision, including without limitation, the U.N. Convention on
           Contracts for the International Sale of Goods.

11         GENERAL

11.1       Non-Exclusive Relationship. Except as stated in a separate written
           agreement signed by duly authorized officers of UMC and of Conexant,
           and subject to Section 8 "Confidentiality" above, nothing in the
           Agreements shall prohibit Conexant from purchasing goods and/or
           foundry services from other suppliers, nor prohibit UMC from offering
           wafers and/or foundry services to others or from offering products or
           services on its own behalf.

11.2       No Agency or Partnership. Nothing in the Agreements shall be deemed
           to create a general or limited partnership or an agency relationship
           between Conexant and/or UMC, and Conexant and UMC are independent
           companies. Conexant will purchase products manufactured from UMC in
           an arm's length vendor-purchaser relationship. No party shall be
           entitled to act on behalf of and/or to bind any one or more of the
           others.

11.3       Compliance with Law. The parties will comply with all applicable
           restrictions and requirements of applicable law, including without
           limitation those relating to labor, employment, environment, and
           export control. Conexant agrees at its sole expense to comply with
           all applicable laws in connection with the purchase, use or sale of
           the Products.

11.4       No Implied Licenses. Nothing contained in this Agreement is intended
           to or shall be construed as:

11.4.1     conferring any right to the other party to use in advertising,
           publicity, or otherwise, any trademark, trade name or names of any
           party, or any contraction, abbreviation or simulation thereof; and/or

                                                                          - 14 -
<PAGE>

11.4.2     conferring by implication, estoppel or otherwise, upon any party any
           license or other right under any class or type of copyright,
           maskwork, trademark, trade name, patent, utility model or design
           patent except the licenses and rights expressly granted under a
           written agreement signed by the Parties.

11.5       Entire Agreement. This Agreement and the Capacity Agreement
           (including the attached Exhibits) contains all material and essential
           terms of a binding agreement between the parties with respect to
           foundry, fabrication, semiconductors, design support and goods, there
           are no other agreements concerning such subject matter. This
           Agreement, along with the Capacity Agreement, is the entire agreement
           between the parties with respect to the stated subject matter; it
           supersedes all prior understandings and agreements with respect to
           these matters, and there are no prior representations, warranties or
           other agreements relating thereto. This Agreement may not be
           modified, except in writing signed by duly authorized officer of each
           party, and no addition, deletion or modification shall be binding on
           UMC unless expressly agreed to in a writing signed by an officer of
           UMC.

11.6       Notices. All notices, payments, reports and other communications
           required or permitted hereunder shall be in writing and shall be
           mailed by first class, registered or certified mail, postage prepaid,
           or otherwise delivered by hand, by messenger (including express mail
           courier services) or by facsimile, addressed to the addresses first
           set forth above or at such other address furnished with a notice in
           manner set forth herein. Such notices shall be deemed to have been
           served when delivered or, if delivery is not accomplished by reason
           of some fault of the addressee, when tendered. Notices shall be
           addressed as follows:

              If to UMC:

              UMC Group (USA)
              488 DeGuigne Drive
              Sunnyvale, CA  94086
              Attn:  President

              Copy to:

              Law+
              993 Highlands Circle
              Los Altos, CA 94024
              Attn:  Peter Courture, Esq.
              Fax:   (650) 968-8885

              If to Conexant:

              4311 Jamboree Road
              Newport Beach, CA  92660-3095
              Attn:  Contracts Dept.
              Fax:   (949) 483-4176.

11.7       Assignment. [***]

                                                                          - 15 -
<PAGE>

11.8       Captions and Section Headings. The captions and section and paragraph
           headings used in this Agreement are inserted for convenience only and
           shall not affect the meaning or interpretation of this Agreement.

11.9       Partial Invalidity. If any paragraph, provision, or clause thereof in
           this Agreement shall be found or be held to be invalid or
           unenforceable in any jurisdiction in which this Agreement is being
           performed, the remainder of this Agreement shall be valid and
           enforceable and the parties shall negotiate, in good faith, a
           substitute, valid and enforceable provision that most nearly reflects
           the parties' intent in entering into this Agreement.

11.10      Presumptions. In construing the terms of this Agreement, no
           presumption shall operate in either party's favor as a result of its
           counsel's role in drafting the terms or provisions hereof.

11.11      Language. The English language shall govern the meaning and
           interpretation of this Agreement.

11.12      Waiver. The failure of either party to enforce at any time the
           provisions of this Agreement, or the failure to require at any time
           performance by the other party of any of the provisions of this
           Agreement, shall in no way be construed to be a present or future
           waiver of such provisions, nor in any way affect the right of either
           party to enforce each and every such provision thereafter. The
           express waiver by either party of any provision, condition or
           requirement of this Agreement shall not constitute a waiver of any
           future obligation to comply with such provision, condition or
           requirement.

11.13      Cumulative Remedies. The remedies under this Agreement shall be
           cumulative and not alternative and the election of one remedy for a
           breach shall not preclude pursuit of other remedies unless as
           expressly provided in this Agreement.

11.14      Confidentiality of Agreement. Each party agrees that the terms and
           conditions of this Agreement and Quotations shall be treated as
           confidential information of both parties, and that neither party will
           disclose the terms or conditions to any third party without the prior
           written consent of the other party, provided, however, that each
           party may disclose the terms and conditions of this Agreement, to the
           extent necessary:

11.14.1    as required by any court or other governmental body;

11.14.2    as otherwise required by law;

11.14.3    to legal counsel of the parties, accountants, and other professional
           advisors;

11.14.4    in confidence, to banks, investors and other financing sources and
           their advisors;

11.14.5    in connection with the enforcement of this Agreement or rights under
           this Agreement; or

                                                                          - 16 -
<PAGE>

11.14.6    in confidence, in connection with an actual or prospective merger or
           acquisition or similar transaction.

11.15      Authority. Each party represents that all corporate action necessary
           for the authorization, execution and delivery of this Agreement by
           such party and the performance of its obligations hereunder has been
           taken.

11.16      Counterparts. This Agreement may be executed in two (2) or more
           counterparts, all of which, taken together, shall be regarded as one
           and the same instrument.

           IN WITNESS WHEREOF, the parties have authorized their undersigned
representatives to sign this Agreement and to bind them to its terms and
conditions in accordance with the foregoing.

CONEXANT:                                   UMC:

/s/ Terry Ellis                             /s/ Jim Kupec
-----------------------------               -----------------------------
Authorized Signature                        Authorized Signature

Terry Ellis                                 Jim Kupec
-----------------------------               -----------------------------
Printed Name                                Printed Name

SVP, Operations                             President, UMC Group (USA)
-----------------------------               -----------------------------
Title                                       Title

8/4/00                                      07/27/00
-----------------------------               -----------------------------
Date                                        Date

11.17      CONEXANT AND UMC EXPRESSLY AGREE TO THE LIMITATIONS OF SECTIONS 5, 6,
           7 AND 8 AND TO THEIR REASONABLENESS.

Initialed as accepted and agreed to by the parties hereto:
                                            Conexant:  /s/ TE
                                                     ------------------------

                                            UMC:       /s/ JK
                                                     ------------------------

                                                                          - 17 -
<PAGE>
                                    EXHIBIT A
                                   QUOTATIONS

         QUOTATIONS SHALL INCLUDE THE FOLLOWING ELEMENTS, AS APPLICABLE.

A.1:     Products to be manufactured

A.2:     Product prices fees and charges:

A.3:     Product mask making requirements:

A.4:     Product testing requirements:

A.5:     Product assembly requirements:

A.6:     Product packaging requirements

A.7:     Product Specification requirements:

A.8:     Product Quantity requirements:

A.9:     Product Cycle Time requirements:

A.10:    Product lead-time requirements:

A.11:    Other Product Parameters:

                                                                          - 18 -
<PAGE>
                                    EXHIBIT B
                               ACCEPTANCE CRITERIA

                                      [***]

                               [4 pages omitted]

                                                                          - 19 -

<PAGE>
                                  EXHIBIT B.01
                               PRE-PRODUCTION FORM

                                      [***]

                                                                          - 20 -
<PAGE>
                                  EXHIBIT B.02
                              MASS PRODUCTION FORM

                                      [***]

                                                                          - 21 -
<PAGE>
                                  EXHIBIT B.03
                   OUTGOING QUALITY ASSURANCE (OQA) PROCEDURE

                                      [***]

                                                                          - 22 -
<PAGE>
                                    EXHIBIT C
                                QUALITY ASSURANCE

                                      [***]

                                                                          - 23 -
<PAGE>
                                    EXHIBIT D
                                   PROCEDURES

                                      [***]

                               [2 pages omitted]

                                                                          - 24 -
<PAGE>
                                    EXHIBIT E
                                 RECIPROCAL NDA

          [See Exhibit E to Capacity and Reservation Deposit Agreement
                           dated as of March 20, 2000]

                                                                         - 25 -
<PAGE>
                                    EXHIBIT F
                              PACKING INSTRUCTIONS

1.       Product wafers shall be shipped in new wafer lot boxes with matching
         wafer cassettes where the wafers are correctly slotted in the wafer
         cassette as indicated by the slot numbers on the cassette. (ex: if
         wafer #15 is missing, then cassette slot #15 is empty)

2.       No broken wafers are to be shipped.

3.       Each wafer lot box must have a label stating a) the Conexant PO number
         and line item, b) the Conexant part number and lot number, c) the wafer
         quantity, and d) the missing wafer information.

4.       Wafer lot boxes are to be vacuum-sealed in moisture barrier bags. Bags
         must be capable of maintaining vacuum throughout the shipping process.

5.       One wafer lot box per heat sealed bag.

6.       Vacuum in the bag at heat sealing must be a minimum of 5 torr under
         current atmospheric pressure.

7.       No more than two (2) wafer lots are packaged per shipping cardboard
         box.

8.       Heat-sealed wafer lot boxes are to be placed in insulation units, with
         spacing between the wafer lot box and the inner wall of the cardboard
         box and between wafer lot boxes (if applicable) all as specified by
         UMC's standard practices, as amended from time to time. To the extent
         Conexant desires packaging which differs in any respect from such UMC
         standard packaging, Conexant and UMC shall negotiate in good faith as
         to the practicality of such alternative arrangements and as to
         allocation of the costs involved.

9.       Cardboard shipping boxes pass the following tests at UMC: 1)- Vibration
         test: Frequency 5Hz->100Hz->500Hz, duration of test 1 hour, 2)- Free
         fall test: Drop height 100 cm-.

10.      The cardboard box must be sealed with the appropriate means to insure
         and retain closure throughout the shipping process.

11.      The sum of the total number of shipping boxes must be identified on the
         outside of each box. (ex: 3 shipping boxes are identified as 1/3, 2/3,
         3/3)

12.      Appropriate shipping information (packing list) must be attached to the
         outside and inside of box #1.

13.      Fragile and/or caution labels should be visible on the outside of each
         shipping box.

                                                                          - 26 -

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