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                                                                  Exhibit 10.22


                                SPINOFF AGREEMENT

         This Spinoff Agreement (the "Agreement") is made by and between
Integrated Telecom Express, Inc. ("ITeX" or "UMC SPINOFF"), a Delaware
Corporation, having its principal place of business in Santa Clara, California,
and United Microelectronics Corporation "UMC"), a corporation organized under
the laws of the Republic of China having a place of business at No. 3 Li Hsin
Road 2, Science Based Industrial Park, Hsin Chu City, Taiwan.

                                   BACKGROUND

         UMC has previously entered into a patent cross license agreement
("License Agreement") with Texas Instruments, Inc. ("TI") attached hereto as
Exhibit B;

         The License Agreement allows UMC to extend certain licenses granted by
TI to certain UMC related entities (including without limitation ITeX) in
exchange for royalties, patent cross licenses and other obligations;

         ITeX has requested that UMC obtain such licenses for ITeX;

         The parties are entering into this Agreement to document and
summarize ITeX's rights and obligations pursuant to the exercise of the
option to include ITeX within the scope of the License Agreement as a UMC
SPINOFF (as defined in the "License Agreement") but agree that the License
Agreement shall in all events control;

         As such, the parties agree as follows:

1    LICENSES

1.1  LICENSES TO ITEX. Pursuant to Sections 1.1.3 and 1.1.4 of the License
     Agreement, ITeX shall have a license from TI as follows:

     1.1.1    TI PATENTS. [*] TI ENTITY hereby grants and agrees to grant to UMC
              SPINOFF a [*] license under [*] TI PATENTS to [*] UMC SPINOFF
              BRANDED PRODUCTS manufactured by UMC ENTITIES.

     1.1.2    TI PARTICIPATION PATENTS. To the extent that [*] TI ENTITY has the
              legal right to do so, [*] such TI ENTITY hereby grants and agrees
              to grant to UMC SPINOFF [*] licenses or [*] under [*]
              TI-PARTICIPATION PATENTS, to [*] UMC SPINOFF BRANDED PRODUCTS
              manufactured by UMC ENTITIES.

1.2  LICENSES TO TI. ITeX hereby grants to TI licenses of the scope set forth in
     Section 1.2.1 of the License Agreement as follows:



* Certain Information in this exhibit has been omitted and filed separately with
the commission. Confidential treatment has been requested with respect to the
omitted portions under 17.C.F.R. section 200.80.80(b)(4), 200.83 and 230.406.

<PAGE>

     1.2.1    SPINOFF PATENTS. UMC SPINOFF hereby grants and agrees to grant to
              [*] TI ENTITY [*] licenses under [*] SPINOFF PATENTS, to [*]
              PRODUCTS. UMC SPINOFF further grants and agrees to grant to [*] TI
              ENTITY the right to [*] PRODUCTS made by [*] TI ENTITY. The grant
              to [*] PRODUCTS shall include the right, under [*] SPINOFF
              PATENTS, for [*] TI ENTITY to [*] and shall further include the
              right under [*] SPINOFF PATENTS for [*] TI ENTITY to[*] made by
              [*] TI ENTITY or [*] other party.

     1.2.2    SPINOFF PARTICIPATION PATENTS. To the extent that it has the legal
              right to do so, UMC SPINOFF hereby grants and agrees to grant to
              [*] TI ENTITY [*] licenses or [*] under any SPINOFF PARTICIPATION
              PATENTS, to [*] PRODUCTS; and to [*] PRODUCTS made by [*] TI
              ENTITY. The grant to [*] PRODUCTS shall include the right, under
              any SPINOFF PARTICIPATION PATENTS, for [*] TI ENTITY to [*] and
              shall further include the right under any SPINOFF PARTICIPATION
              PATENTS to [*] made by [*] TI ENTITY or [*] other party.

     1.2.3    TI ENTITY SUBCONTRACTING. The licenses granted hereunder to TI
              ENTITIES include the right to [*] PRODUCTS either in finished or
              semifinished form for the sole account of [*] TI ENTITY, but only
              if:.

         1.2.3.1  said PRODUCTS are to be sold, used. leased or otherwise
                  disposed of, by a TI ENTITY, and under the trademark, trade
                  name, or other commercial indicia, of a TI ENTITY;

         1.2.3.2  the TI ENTITY provides its standard patent indemnities and
                  product warranties (that it would provide for the same or
                  similar products manufactured in its own facilities) for any
                  of said PRODUCTS sold, leased or otherwise disposed of, by the
                  TI ENTITY; and

         1.2.3.3  said PRODUCTS are made by the third party using manufacturing
                  drawings, specifications, data base tapes, or the like:

                  1.2.3.3.1 originated by a TI ENTITY,

                  1.2.3.3.2 originated by any third party specifically and
                  exclusively for a TI ENTITY,

                  1.2.3.3.3 licensed to a TI ENTITY by an entity or person other
                  than the manufacturing party, or

                  1.2.3.3.4 which a TI ENTITY has the legal or contractual right
                  to so utilize except where such right derives from the
                  manufacturing party; provided however that such right shall
                  not extend to standard, off-



* Certain Information in this exhibit has been omitted and filed separately with
the commission. Confidential treatment has been requested with respect to the
omitted portions under 17.C.F.R. section 200.80.80(b)(4), 200.83 and 230.406.

<PAGE>

                             the-shelf products of such third party nor to
                             products originally designed by such third party
                             and to which only minor revisions are made to
                             conform to the specifications of a TI ENTITY.

                  Except as set forth above, the licenses granted hereunder to
                  TI ENTITIES shall not include [*] rights.

     1.2.4    THIRD-PARTY PRODUCTS. With respect to the licenses granted
              hereunder to TI ENTITIES, and notwithstanding anything in Section
              1.2.3 to the contrary, a license to [*] TI ENTITY [*] PRODUCTS
              made by [*] TI ENTITY, does include the right of [*] TI ENTITY [*]
              PRODUCTS of, and purchased directly or indirectly by such TI
              ENTITY from, any third party; provided that such PRODUCTS are [*]
              under the trademark, trade name or other commercial indicia of [*]
              TI ENTITY.

     1.2.5    TI FOUNDRY RESTRICTION. With respect to the licenses granted
              hereunder to [*] TI ENTITIES, no such license includes the
              right of [*] TI ENTITY to [*] PRODUCTS, either in finished or
              semifinished form (by way of example, "semifinished form"
              includes (1) semiconductor wafers at any stage of their
              manufacture, (2) foundry services and (3) assembly) [*], any
              third party to [*], such PRODUCTS under the trademark, trade
              name, or other commercial indicia of such third party in any
              instance where the manufacturing drawings, specifications, data
              base tapes, or the like, are in whole or in part originated by,
              or on behalf of, such third party. In the event of any such
              activity by [*] TI ENTITY, the exclusive remedy for UMC SPINOFF
              for any claim of patent infringement shall be against any-party
              other than [*] TI ENTITY. The foregoing in this Section 1.2.5
              notwithstanding, in any instance in which such PRODUCTS are
              application-specific INTEGRATED CIRCUITS (ASICs or CSICs),
              which are substantially comprised of a TI ENTITY's ASIC or CSIC
              preconfigured cells, whether macro or primitive, characterized
              to a TI ENTITY's process, the licenses granted hereunder to [*]
              TI ENTITY shall be deemed to be extended to such PRODUCTS.

1.3  THIRD PARTY DESIGNS. With respect to the licenses granted hereunder, and
     except as provided otherwise in Section 1.2.4, a license to a LICENSED
     PARTY, [*] PRODUCTS:

     1.3.1    does not include any right for the LICENSED PARTY to act as a
              sales agent, commission agent, sales representative, broker or
              factor of products made by third parties; and

     1.3.2    does not include any right for a LICENSED PARTY to act as a
              distributor or reseller of products made by third parties.



* Certain Information in this exhibit has been omitted and filed separately with
the commission. Confidential treatment has been requested with respect to the
omitted portions under 17.C.F.R. section 200.80.80(b)(4), 200.83 and 230.406.

<PAGE>

1.4  GENERAL EXCLUSIONS.

     1.4.1    Nothing in this Agreement shall be construed or interpreted as an
              agreement to bring or prosecute actions or suits against third
              parties for infringement or conferring any right to bring or
              prosecute actions or suits against third parties for infringement.

     1.4.2    Specifically excluded from the grants of licenses pursuant to this
              Agreement, is any license, direct Or implied, under the U.S.
              Semiconductor Chip Protection Act of 1984, or under the Japanese
              Law Concerning Semiconductor Integrated Circuit Layouts of 1985,
              or under any other corresponding legislation of any other country.

     1.4.3    Specifically excluded from the grants of licenses pursuant to this
              Agreement, is any license, direct or implied, under any
              copyrights, trademarks, service marks, trade names, trade dress,
              or trade secrets.

     1.4.4    Specifically excluded from the grants of licenses pursuant to this
              Agreement is any license, direct or implied, under any design
              PATENTS except for any design PATENTS for packaging, modules, or
              housing, for PRODUCTS.

     1.4.5    Specifically excluded from the grants of licenses pursuant to this
              Agreement is any right to sublicense.

2    RELEASES

ITeX agrees to grant the releases set forth below and shall enjoy the release
granted by TI below all in accordance with the License Agreement:

2.1  UMC SPINOFF hereby releases, acquits and forever discharges [*] TI ENTITY
     which is [*] TI ENTITY on or as of the EFFECTIVE DATE from any and all
     claims or liability for infringement or alleged infringement of any SPINOFF
     PATENTS under which a license is herein granted by UMC SPINOFF, with
     respect to performance by [*] TI ENTITY, prior to the EFFECTIVE DATE, of
     acts which if performed on or after the EFFECTIVE DATE would be acts
     licensed hereunder.

2.2  [*]TI ENTITY which is[*] TI ENTITY on or as of the EFFECTIVE DATE hereby
     releases, acquits and forever discharges UMC SPINOFF from any and all
     claims or liability for infringement or alleged infringement of any TI
     PATENTS under which a license is herein granted by [*] TI ENTITY, with
     respect to performance by UMC SPINOFF, prior to the EFFECTIVE DATE, of acts
     which if performed on or after the EFFECTIVE DATE would be acts licensed
     hereunder.

2.3  UMC SPINOFF hereby waives any and all claims or liability for infringement
     or alleged infringement which UMC SPINOFF itself may have against [*] TI
     ENTITY which is [*] TI ENTITY on or as of the EFFECTIVE DATE, based on any
     SPINOFF-PARTICIPATION PATENT with respect to performance by [*] TI ENTITY,
     prior to the EFFECTIVE DATE, of acts which if performed on or after the
     EFFECTIVE DATE would be acts



* Certain Information in this exhibit has been omitted and filed separately with
the commission. Confidential treatment has been requested with respect to the
omitted portions under 17.C.F.R. section 200.80.80(b)(4), 200.83 and 230.406.

<PAGE>

     licensed hereunder, and UMC SPINOFF agrees to release [*] TI ENTITY from
     any and all such claims or liability to the extent UMC SPINOFF has or later
     acquires the legal right to grant such a release.

2.4  [*] TI ENTITY which is [*] TI ENTITY on or as of the EFFECTIVE DATE hereby
     waives any and all claims or liability for infringement or alleged
     infringement which [*] TI ENTITY itself may have against UMC SPINOFF based
     on [*] TI-PARTICIPATION PATENT, with respect to performance by UMC SPINOFF,
     prior to the EFFECTIVE DATE, of acts which if performed on or after the
     EFFECTIVE DATE would be acts licensed hereunder, and [*] TI ENTITY hereby
     agrees to release UMC SPINOFF from any and all such claims or liability to
     the extent [*] TI ENTITY has or later acquires the legal right to grant
     such a release.

3    ROYALTIES

3.1  ROYALTY. UMC SPINOFF shall pay a royalty [*], provided however that [*]
     shall not be subject to payment of royalties.

3.2  DUE DATES. UMC SPINOFF shall pay the applicable royalties to UMC as
     follows:

     3.2.1    All royalties due herein during each calendar [*] period
              commencing on [*],as the case may be, shall be paid within [*]
              days after that [*], as the case may be;

     3.2.2    In the event this Agreement [*] during a calendar [*] period,
              other than on [*], all royalties payable for that calendar [*]
              period shall be paid within [*] days after such [*] of this
              Agreement.

     3.2.3    Royalties for [*] purchased or transferred from a UMC ENTITY on or
              before [*] (and manufactured after the EFFECTIVE DATE) shall be
              reported and paid by [*]

3.3  ROYALTY TRIGGERING EVENTS. For purposes of [*] and determining royalties
     hereunder, [*] shall be deemed to be sold or otherwise disposed of, when a
     UMC ENTITY bills UMC SPINOFF, or upon delivery to UMC SPINOFF by a UMC
     ENTITY, whichever event occurs first.

3.4  SURVIVAL. The obligation to pay unpaid royalties which accrued during the
     term of this Agreement shall survive any termination or expiration of this
     Agreement.



* Certain Information in this exhibit has been omitted and filed separately with
the commission. Confidential treatment has been requested with respect to the
omitted portions under 17.C.F.R. section 200.80.80(b)(4), 200.83 and 230.406.

<PAGE>

3.5  ACCOUNTING AND RECORDS.

     3.5.1    COMPUTATION. All computations relating to determination of the
              amounts of royalties due and payable pursuant to this Agreement
              shall be made in accordance with internationally recognized and
              generally accepted accounting principles as reflected in the
              practice of independent certified public accountants of
              international reputation.

     3.5.2    AUDIT.

         3.5.2.1  ACCESS TO RECORDS. Upon the reasonable written request of TI
                  or UMC, UMC SPINOFF shall permit access to its books and
                  records relating to UMC SPINOFF BRANDED PRODUCTS by UMC or an
                  independent accounting firm selected by TI and/or UMC, for the
                  sole purpose of, and solely to the extent reasonable for,
                  verifying the calculation of royalties due and payable
                  pursuant to this Agreement.

         3.5.2.2  FREQUENCY. TI and UMC shall each seek permission for an audit
                  of UMC SPINOFF no more than [*] each calendar year, and no
                  such request may be made at a time longer than [*] years after
                  the due date for the payment(s) involved.

         3.5.2.3  SCOPE. All information concerning [*], including without
                  limitation, [*] shall be made available to the independent
                  accounting firm or UMC to the extent necessary to verify the
                  calculation of royalties; provided that such information shall
                  not be made available to TI by UMC or the independent
                  accounting firm and provided further that UMC or such
                  accounting firm shall agree in writing to maintain such
                  information as confidential, not to disclose it to anyone
                  other than as necessary to verify such calculation (and then
                  only upon such terms as ensure protection for confidentiality
                  at least as stringent as provided herein), and not to use it
                  for any purpose other than such verification.

     3.5.3    RECORD KEEPING. UMC SPINOFF shall retain such books and records as
              are reasonably necessary for verifying the calculation of
              royalties due and payable under this Agreement, for a period of no
              less than [*] years after the date of payment of such royalties.

     3.5.4    COSTS. UMC SPINOFF shall bear [*] costs and expenses for a
              particular audit if upon performance of the audit, the independent
              accounting firm or UMC determines that royalties paid during the
              audited period were under by an amount in [*] of [*] Otherwise, TI
              and/or UMC shall bear the costs and expenses that are incurred in
              performing the audit. UMC SPINOFF shall also pay the amount of any
              royalty shortfall determined by the audit within [*] days of
              written notice of



* Certain Information in this exhibit has been omitted and filed separately with
the commission. Confidential treatment has been requested with respect to the
omitted portions under 17.C.F.R. section 200.80.80(b)(4), 200.83 and 230.406.

<PAGE>

              the amount of such shortfall following the conclusion of such
              audit, provided however that no such payment or acceptance thereof
              shall be an admission that the audit determination was correct,
              and UMC SPINOFF, UMC and TI shall remain free to contest such
              determination in the manner allowed under the law.

     3.5.5    SURVIVAL. The rights and obligations provided under this Section
              3.5 shall survive for a period of [*] years after the termination
              or expiration of this Agreement, for any reason.

3.6  CURRENCY EXCHANGE. Royalties accounted for in any currency other than
     United States dollars shall be converted to United States dollars by using
     the prevailing rate of exchange of any such currency for United States
     dollars [*] quoted in the New York Foreign Exchange Market ("prevailing
     rate of exchange") on the date [*] days prior to the date of the written
     statement required under Section 3.7 below.

3.7  ROYALTY REPORT. [*] the date each royalty payment is due, UMC SPINOFF shall
     furnish to UMC a written statement in the English language, certified by an
     authorized representative of UMC SPINOFF, concerning the computation of
     royalties due to or payable, in respect of the applicable calendar annual
     or semi-annual period. Each such written statement shall contain
     information in reasonably sufficient detail to permit the determination of
     the overall accuracy of each royalty payment due or payable under this
     Agreement and, in particular, shall set forth the following:

     3.7.1    The total [*] for such [*] reporting period, including a listing
              of the aggregate [*] in the currency(ies) in which billed, the
              prevailing rates of exchange used and the final United States
              dollar value, and

     3.7.2    Whatever additional information TI or UMC may reasonably prescribe
              by written request from time to time to enable TI or UMC to
              ascertain the computation of royalties under this Agreement,
              provided, however, that TI is not entitled to specific information
              concerning particular sales and/or transactions except as may be
              requested in connection with an audit pursuant to the terms of
              this Agreement, and then only as prescribed for such an audit.

     3.7.3    The obligation to provide such a royalty report for any royalties
              for which a royalty report has not already been provided shall
              survive for [*] years beyond the termination or expiration of this
              Agreement, for any reason.

3.8  TAXATION. All taxes imposed as a result of the existence of this Agreement
     or the performance hereunder shall be paid by the party required to do so
     by applicable law.



* Certain Information in this exhibit has been omitted and filed separately with
the commission. Confidential treatment has been requested with respect to the
omitted portions under 17.C.F.R. section 200.80.80(b)(4), 200.83 and 230.406.

<PAGE>

4    TERM, TERMINATION, DISPUTE RESOLUTION

4.1  TERM. Except as otherwise provided in this Section 4, this Agreement and
     the licenses granted pursuant hereto shall remain in force until December
     31, 2007 unless extended by UMC upon written notice to UMC SPINOFF.

4.2  TERMINATION.

     4.2.1    EVENTS OF TERMINATION.

         4.2.1.1  NATURAL TERMINATION. Unless extended under Section 4.1 above,
                  this Agreement (and all licenses granted under it) shall
                  expire by its terms on December 31, 2007, except that such
                  expiration shall not effect any royalty or other obligation
                  arising prior to such expiration and shall not affect any
                  rights or obligations which are specifically provided
                  hereunder as surviving expiration or termination of this
                  Agreement.

         4.2.1.2  MATERIAL BREACH. If UMC SPINOFF fails to make any payment
                  fully or timely as required by this Agreement, or in the
                  event of any other material breach of this Agreement by UMC
                  SPINOFF, and if such failure or other material breach is
                  not corrected within forty-five (45) days after written
                  notice by UMC or TI, then this Agreement may be terminated
                  by UMC forthwith in its entirety by written notice to UMC
                  SPINOFF, provided that such termination shall not affect
                  any royalty or other obligation arising prior to such
                  termination and shall not affect any rights or obligations
                  which are specifically provided hereunder as surviving
                  expiration or termination of this Agreement, and provided
                  further that as to UMC SPINOFF BRANDED PRODUCTS as to which
                  TI accepts payment of royalties, the licenses, covenants
                  and releases under this Agreement shall not be terminated
                  as to such products for which royalty payments have been
                  made by UMC and accepted by TI.

         4.2.1.3  REORGANIZATION OR SALE OF ASSETS. This Agreement may be
                  terminated by written notice of UMC to UMC SPINOFF within
                  thirty (30) days of receiving actual notice that the UMC
                  SPINOFF has consolidated with or merged with or into, or
                  transferred, directly or indirectly; all or substantially all
                  of its assets to, another corporation, company or other
                  entity; notwithstanding that UMC SPINOFF may be the surviving
                  entity of such consolidation, merger or transfer. No such
                  termination shall affect any royalty or other obligation
                  arising prior to such termination.

         4.2.1.4  GOVERNMENT INTERVENTION. If at any time during the term of
                  this Agreement, any government or agency thereof takes any
                  action against either or both PARTIES requiring, directly or
                  indirectly, formally or informally, alteration or modification
                  of any material term or condition of this Agreement or of the
                  performance of the PARTIES that materially adversely affects
                  one PARTY (the "Affected PARTY") substantially frustrating the
                  purpose of the Affected

<PAGE>

                  PARTY in entering into this Agreement, then if the Affected
                  PARTY makes written request to the other PARTY within sixty
                  (60) days from said action of such government or agency
                  thereof, the PARTIES shall enter into good faith negotiations
                  with the objective of restructuring the relationship between
                  the PARTIES in a manner such that the adverse effect of such
                  required alteration or modification of this Agreement will be
                  minimized consistent with the purposes of the PARTIES in
                  entering this Agreement as expressed herein. If the PARTIES
                  cannot reach an acceptable restructuring arrangement within
                  six (6) months from the date of such written request, or
                  within such longer period of time as mutually agreed upon,
                  either PARTY shall have the right to terminate this Agreement
                  forthwith in its entirety by giving written notice to that
                  effect to the other PARTY and such termination shall be
                  effective upon receipt of notice. All other provisions of this
                  Section 4.2 notwithstanding, in the event this Agreement is
                  terminated pursuant to this Section 4.2.1.4, then all rights
                  and licenses under TI PATENTS, TI-PARTICIPATION PATENTS,. UMC
                  SPINOFF PATENTS and UMC SPINOFF-PARTICIPATION PATENTS shall
                  cease and terminate upon receipt of such termination notice.
                  No such termination shall affect any royalty or other
                  obligation arising prior to such termination.

         4.2.1.5  TERMINATION OF LICENSE AGREEMENT. This Agreement shall
                  terminate without notice upon termination or expiration of the
                  License Agreement.

         4.2.1.6  CHANGE OF OWNERSHIP OF UMC SPINOFF. UMC SPINOFF shall give
                  prompt written notice to UMC or TI if and when any person,
                  entity, or "group" within the meaning of Section 13 of the
                  U.S. Securities Exchange Act of 1934 owns more shares of
                  stock of UMC SPINOFF entitled to vote for the election of
                  directors than are owned, directly or indirectly, by UMC
                  ("Shift in Control"). UMC will inform TI of such event, and
                  at the option of TI by written notice to UMC given within
                  forty-five (45) days of receipt of UMC's notice, or within
                  forty-five (45) days of TI learning of such Shift in
                  Control, UMC SPINOFF shall cease to be have a license to TI
                  PATENTS with respect to any wafer starts from and after the
                  date of such Shift in Control and all licenses and
                  covenants to any TI ENTITY from UMC SPINOFF shall terminate
                  as to wafer starts on or after such date, provided however
                  that if UMC and/or UMC SPINOFF sends written notice to TI
                  of the Shift in Control within forty-five (45) days of the
                  effective date of such Shift in Control, no termination
                  under this clause will take effect as to any wafers started
                  prior to the date that the UMC receives the applicable
                  written notice from TI terminating the licenses.

     4.2.2    NON-TERMINATING EVENTS. For the convenience of the PARTIES hereto,
              this Agreement is made in consideration of the exchange of patent
              licenses under a group of PATENTS of TI and its respective
              ENTITIES and UMC SPINOFF. A determination or action by a court of
              competent jurisdiction, regulatory authority or governmental
              agency: (1) finding that one or more of the PATENTS are invalid or
              unenforceable; or (2) granting a temporary or permanent injunction
              or restraining

<PAGE>

              order under one or more of the PATENTS; shall not give rise to a
              right of termination by either PARTY nor shall such determination
              or action be regarded as justification (a) for a retrospective or
              prospective change in this Agreement affecting the royalty rates
              or amounts to be paid, or (b) for changing any other provision of
              this Agreement.

     4.2.3    EFFECT OF TERMINATION. Except as otherwise provided specifically
              in Section 4.2.4, all licenses granted pursuant to this Agreement
              shall cease forthwith as of the date of expiration or termination
              for any reason of this Agreement. Any PRODUCTS as to which an
              event specified in the first sentence of Section 3.3 has not
              occurred prior to the date of such expiration or termination shall
              not be considered to be licensed under this Agreement.

     4.2.4    LICENSE SURVIVAL. In the event of termination of this Agreement or
              any of the licenses granted under this Agreement by one party
              ("the Terminating PARTY") pursuant to Section 4.2.1.2, the
              licenses granted by the defaulting PARTY and its respective
              ENTITIES to the Terminating PARTY and its respective ENTITIES
              hereunder shall survive until December 31, 2007.

5    WARRANTIES AND REPRESENTATIONS

5.1  EXPRESS WARRANTIES, ACKNOWLEDGEMENTS AND REPRESENTATIONS.

5.2  POWER AND AUTHORITY. UMC SPINOFF represents and warrants that it has
     sufficient right and authority to grant to the all licenses, releases, and
     other rights granted hereunder by it.

5.3  FULL ROYALTY. UMC SPINOFF represents and acknowledges that it has bargained
     for the right to use all of the PATENTS licensed herein but are free not to
     use any if they so choose. UMC SPINOFF acknowledges that it is liable
     hereunder for the full royalty obligation detailed herein regardless of the
     number of PATENTS used and such royalty obligation exists even if no
     PATENTS are actually used.

5.4  DISCLAIMER. The warranties in this Agreement are in lieu of all other
     warranties, express or implied. This Agreement is a compromise of disputed
     matters. Nothing contained in this Agreement shall be construed as: (i) a
     warranty, representation and/or an admission by any of the PARTIES or their
     respective ENTITIES as to the infringement, enforceability, validity, or
     scope of any patents; or (ii) a warranty or representation that any
     manufacture, sale, offer for sale, lease, import, use or other disposition
     of PRODUCTS hereunder will be free from infringement of any intellectual
     property rights of third parties.

6    MISCELLANEOUS PROVISIONS

6.1  IMPLIED LICENSES AND RELEASES. Nothing in this Agreement shall be construed
     or interpreted as conferring by implication, estoppel or otherwise, upon
     any PARTY, any license or other right under any patent or utility model,
     copyright, mask work right, trade secret, trademark, trade name or the
     like, except the licenses and rights expressly granted hereunder.

<PAGE>

6.2  TECHNICAL ASSISTANCE. Nothing in this Agreement shall be construed or
     interpreted as an obligation to furnish any technical assistance or
     information or know-how.

6.3  NO LICENSE TO SOFTWARE. Nothing in this Agreement shall be construed or
     interpreted as conferring by implication, estoppel or otherwise upon any
     PARTY, any license or other right under copyrights or design PATENTS
     covering any computer software that may be embodied in a PRODUCT.

6.4  GOVERNMENTAL CONTRACT RESTRICTIONS. It is recognized that the TI ENTITIES
     and UMC SPINOFF may have contracted, or may after the EFFECTIVE DATE,
     contract with a governmental entity, such as a national or other sovereign
     government, governmental agency or intergovernmental authority, to do work
     financed by such entity and to assign to such entity its/their right to
     grant, or may now or hereafter be restrained by such entity from granting,
     licenses (other than between related ENTITIES) under PATENTS for inventions
     arising out of such work. The inability, for such a reason, to grant the
     licenses herein agreed to be granted shall not be considered a breach of
     this Agreement.

6.5  NO AGENCY. Nothing in this agreement or anything done by either in the
     discharge of its obligations hereunder shall be deemed to make it the agent
     of another party.

6.6  NO ASSIGNMENT. This Agreement and the licenses granted herein shall inure
     to the benefit of the PARTIES and their respective ENTITIES. UMC SPINOFF
     shall not assign or transfer any of its rights, privileges or obligations
     hereunder without the prior written consent of a duly authorized
     representative of UMC. Any attempt to so assign this Agreement or the
     licenses without such consent shall be null and void.

6.7  NOTICES. All notices required or permitted to be given hereunder shall be
     in writing and shall be valid and sufficient if dispatched by registered
     airmail, postage prepaid, in any post office in the United States or in the
     R.O.C., as the case may be, or by facsimile with receipt confirmed,
     addressed as follows:


Integrated Telecom Express, Inc.:                UMC:

Integrated Telecom Express, Inc.                 United Microelectronics Corp.
2710 Walsh Avenue                                No. 3 Li Hsin Road 2
Santa Clara, CA 95051                            Science Based Industrial Park
Attn: President                                  Hsin Chu City, Taiwan, R.O.C.
                                                 Attn: President

Fax: 1 (408) 980-8831                            Fax: 886 (03) 577.4767

Copy to:.                                        Copy to:
Peter Courture                                   Peter Courture
Fax: 1 (650) 968-8885                            Fax: 1 (650) 968-8885

<PAGE>

Either PARTY may change its address by a notice given to the other PARTY in the
manner set forth above. Notices given as herein provided shall be deemed to be
duly received seven (7) business days after mailing or upon actual receipt,
whichever is earlier.

6.8  PAROLE EVIDENCE/NO ORAL MODIFICATION. No oral explanation or oral
     information by either party hereto shall alter the meaning or
     interpretation of this Agreement. No modification, alteration, addition or
     change in the terms hereof shall be binding on either party unless reduced
     to writing and executed by a duly authorized representative of each party.

6.9  CHOICE OF LAW. This Agreement and matters connected with the performance
     thereof shall be construed, interpreted, applied and governed in all
     respects in accordance with the laws of the State of New York, United
     States of America, as applicable to agreements made and to be performed
     entirely within that state and without regard to the choice of law
     provisions, statutes, or regulations of this or any jurisdiction.

6.10  JURISDICTION AND VENUE. Neither party shall commence any action or
      proceeding against the other arising out of this Agreement or the
      termination thereof, except in a Federal Court located in the Southern
      District of the State of New York or Santa Clara County, CA. The parties
      each consent to jurisdiction by such Federal Courts and hereby waive any
      objection they may have in any such action or proceeding, as to the
      appropriateness of the above-identified venues.

6.11  CONFIDENTIALITY. UMC SPINOFF shall keep the terms of this Agreement and
      the License Agreement confidential and shall not now or hereafter divulge
      the same or any part thereof to third parties except:

     6.11.1   with the prior written consent of UMC;

     6.11.2   to any governmental body or judicial entity having jurisdiction
              and calling therefor;

     6.11.3   as otherwise may be required by law or a securities exchange
              established under law, and the rules and regulations of or
              pertaining to such law or exchange, including but not limited to
              those promulgated under the U.S. Securities Act and Securities
              Exchange Act, and by any securities exchange established
              thereunder;

     6.11.4   to legal counsel;

     6.11.5   to the independent outside auditors;

     6.11.6   as may reasonably be appropriate to communicate to customers and
              prospective customers, the license rights which affect the
              PRODUCTS sold or to be sold to them (but any such disclosure under
              this Section 6.11 shall not include the royalty or payment
              obligations or copies of any portion of this Agreement);

<PAGE>

     6.11.7   as may reasonably be required for customary business needs not
              covered in (vi) above (but any such disclosure under this Section
              6.11 shall not include the royalty or payment terms or copies of
              any portion of this Agreement);

     6.11.8   as may be reasonably necessary in connection with corporate
              financings and similar transactions but only under appropriate
              confidentiality requirements; or

         The disclosing party shall provide notification to the non-disclosing
party prior to any disclosure under a court or governmental order, under Section
6.11.2 above. All reasonable efforts to preserve the confidentiality of the
terms of this Agreement shall be expended by the disclosing party in complying
with such an order, including requesting and obtaining a protective order to the
extent possible.

6.12  MERGER. This Agreement sets forth the full and complete agreement and
      understanding between the parties as to the subject matter of this
      Agreement and merges all prior discussions and writings between them as to
      the subject matter hereof; provided that the parties understand that this
      Agreement is intended to summarize the rights and obligations of UMC
      SPINOFF under the License Agreement and in the event additional rights or
      obligations are set forth in the License Agreement that are not set forth
      herein, they shall be incorporated into this Agreement and in the event of
      a conflict between this Agreement and the License Agreement the terms of
      the License Agreement shall control. There are no representations,
      understandings or agreements, oral or written, between UMC SPINOFF and UMC
      as to the subject matter of this Agreement which are not expressly
      included herein. Neither of the PARTIES shall be bound by any modification
      of this Agreement, other than as expressly provided in this Agreement or
      as duly set forth on or subsequent to the date hereof in writing and
      signed by a duly authorized representative of both PARTIES.

6.13  NO WAIVER. The failure by a party to exercise any of its rights under this
      Agreement shall not be deemed to constitute a waiver of any of such
      rights, or other rights or remedies available to such party.

6.14  CONVENIENCE OF THE PARTIES. The PARTIES hereto understand and agree that
      the royalty payments to be made by UMC SPINOFF hereunder are based on
      royalty rates applied to all purchases from UMC ENTITIES by UMC SPINOFFS
      of all UMC SPINOFF BRANDED PRODUCTS in any country in the world regardless
      of whether or not a TI ENTITY has any patent in any particular country and
      regardless of whether there is any use of any TI PATENTS in certain
      countries. It is further understood that this is specifically done for the
      convenience of the PARTIES and their respective ENTITIES, so that separate
      accountings do not have to be made and separate license agreements do not
      have to be negotiated for all PATENTS and for each country in which the
      PARTIES or their respective ENTITIES hold or may hold PATENTS and do
      business.

<PAGE>

         IN WITNESS WHEREOF, the PARTIES have caused their duly authorized
officers to execute this Agreement, on the dates below indicated.


INTEGRATED TELECOM EXPRESS, INC.

BY           /S/ [ILLEGIBLE]
      -----------------------------------
DATE:
      -----------------------------------



UNITED MICROELECTRONICS CORPORATION

BY           /S/ [ILLEGIBLE]
      -----------------------------------
DATE:         June 10, 2000
      -----------------------------------


<PAGE>

                                    EXHIBIT A
                                   DEFINITIONS

1.       "BUSINESS EQUIPMENT AND SYSTEMS"

         Means equipment, processes and methods useful for the operation of the
business of manufacturing and marketing PRODUCTS, including equipment, processes
and methods related to office operations, communications, accounting, sales,
purchasing and the like.

2.       "DEFORMABLE DEVICE"

         Means a SEMICONDUCTOR PRODUCT wherein addressable and movable
electromagnetic radiation reflecting members comprise a substantial portion of
the product, including, by way of illustration and not limitation,
electrostatically controllable, deformable, or deflectable mirrors.

3.       "EFFECTIVE DATE"

         Means the effective date of the License Agreement which is August 6,
1999.

4.       "ENTITY"

         Means a TI ENTITY or a UMC ENTITY, as the case may be.

5.       "INTEGRATED CIRCUIT"

         Means any integrated circuit (having two or more active circuit
elements) whether sold, leased, used, incorporated or otherwise disposed of
singly, or in wafer form, or as hybrid integrated circuits, or as SIMMS or the
like. INTEGRATED CIRCUIT includes any packaging provided as a part thereof. The
intent of this definition is to coincide with the manner in which Dataquest (as
of the EFFECTIVE DATE) uses the term "integrated circuit" or "IC." INTEGRATED
CIRCUIT shall not include display devices such as LCD displays, field emission
displays, or the like.


                                      15

                               UMC CONFIDENTIAL
<PAGE>

6.       "MANUFACTURING EQUIPMENT AND SYSTEMS"

         Means equipment, processes and methods useful for the operation of
facilities for the production of PRODUCTS, including equipment, processes and
methods related to the operation and control of machinery and processes used to
create PRODUCTS, and shall also include test equipment and systems including any
aggregate of instrumentalities primarily adapted for use in the examination,
analysis, measurement, detection, recording or indication of one or more
characteristics or properties of a PRODUCT or PRODUCTS.

7.       "NET SALES BILLED"

         Means the following:

         a. the total amount billed by an UMC ENTITY in any country of the world
to UMC SPINOFF pursuant to a bona fide, arms length transaction unaffected by
reason of affiliation or any other cause, in connection with the sale, lease,
importation, or other disposition, anywhere in the world, of ROYALTY BEARING
PRODUCTS less (i) sales, excise taxes and other taxes (other than taxes measured
by a UMC ENTITY's income) levied in respect to such worldwide sales: leases or
other disposition, where such amounts are included in the amount billed, (ii)
returned sales, sales allowances (adjustments for quality and/or yield) and/or
retroactive price adjustments or credits, (iii) trade, cash or quantity
discounts but only if they are expressly documented, (iv) transportation and
insurance costs where such amounts are included in the amount billed, and (v.)
import duties; or

         b. the fair market value of such ROYALTY BEARING PRODUCTS otherwise
transferred by a UMC ENTITY to UMC SPINOFF (provided, however, that products
described in clause a. of this definition and products which are distributed
without charge in the ordinary course of business and in commercially
insignificant volumes, such as samples, products consumed in internal testing,
benchmarking, research and/or development, or scrapped products, shall not be
included in NET SALES BILLED for purpose of this clause b.). For purposes of
this clause b., fair market value of a particular ROYALTY BEARING PRODUCT shall
be determined as set forth in the License Agreement.


                                      16

                               UMC CONFIDENTIAL
<PAGE>

         c. NET SALES BILLED shall be accounted for in accordance with Section
3.3 of the Agreement.

8.       "PARTY"

         Means TI, UMC, or UMC SPINOFF as the case may be.

9.       "PATENT(S)"

         Means patents (including reissues and re-examination certificates),
utility models, and applications therefor of all countries of the world, which
convey legally enforceable rights, in any country, prior to the date of
expiration or termination of this Agreement. PATENTS includes applications for
patents and utility models which have been published for opposition. PATENTS
does not include design patents, except PATENTS does include design patents
which cover packaging, modules, or housing for SEMICONDUCTOR PRODUCTS. PATENTS
does not include any rights for which payments or other consideration to third
parties is required for the right to grant licenses of the scope granted herein,
except for (i) payments to a SUBSIDIARY of the party owning or controlling such
PATENT, or (ii) payments made to said third parties for inventions made while
employed by such party or its SUBSIDIARIES. PATENTS does not include any claims
of any of the foregoing which am applicable primarily to a DEFORMABLE DEVICE;
provided, however, that for purposes of the license grants hereunder, PATENTS
shall include any such claims to the extent they cover PRODUCTS licensed other
than DEFORMABLE DEVICES.

10.      "PRODUCTS"

         Means SEMICONDUCTOR PRODUCTS.

         a. By way of example and not of limitation, PRODUCTS shall include
semiconductor material, wafers (both unprocessed and processed), discrete
devices (such as transistors), INTEGRATED CIRCUITS, unpackaged dies, packaged
INTEGRATED CIRCUITS (such as DRAMs, SRAMs, DSPs, and subject to clause b below,
microprocessors), memory chips, packaged chips (such as memory and processor
chips), hybrid integrated circuits, memory modules and stacked memory chip
packages, and similar devices. PRODUCTS shall not include any electronic systems
(other than as may

                                      17

                               UMC CONFIDENTIAL
<PAGE>

be provided above with respect to hybrid integrated circuits, memory modules
and stacked memory chip packages, and the like) created using more than one
INTEGRATED CIRCUIT or an INTEGRATED CIRCUIT combined with other peripheral
systems such as personal, laptop, or palmtop computers, computer cards or
boards, audio visual components, telecommunications equipment such as
switches or handsets, or other electronic system comprising one or more
packaged INTEGRATED CIRCUITS and other systems or structures. The fact that a
PRODUCT licensed hereunder is part of a combination as stated above does not
in and of itself mean that such combination of such PRODUCT is licensed.

    b. PRODUCTS shall not include any microprocessors (including without
limitation, digital signal processors), microcontrollers, or math
coprocessors, that are Object Code Compatible (defined below) with a
Proprietary Product (defined below) of a "Licensor" (meaning a TI ENTITY or
UMC SPINOFF, as the case may be). "Proprietary Product" shall mean a
microprocessor (including without limitation, digital signal processors),
microcontroller, or math coprocessor, introduced or marketed by the Licensor,
that has an instruction set originally designed by the Licensor or originally
and exclusively designed for the Licensor. "Object Code Compatible" shall
mean the condition in which a microprocessor (including without limitation,
digital signal processors), microcontroller, or math coprocessor, is capable
of executing the binary object code of 75% or more of the instructions in the
instruction set of a Licensor's Proprietary Product.

11.      "ROYALTY BEARING PRODUCT(S)"

         Means any INTEGRATED CIRCUITS which are UMC SPINOFF BRANDED PRODUCTS.

12.      "SEMICONDUCTOR PRODUCT"

         Means any product comprising at least in part semiconductive material,
such products, including, but not limited to, semiconductor devices,
semiconductor circuits, and INTEGRATED CIRCUITS.

13.      "SUBSIDIARY(IES)"


                                      18

                               UMC CONFIDENTIAL
<PAGE>

Means any corporation, company or other entity more than fifty percent (50%) of
the outstanding shares or stock entitled to vote for the election of directors
of which is owned or controlled by a party (meaning a PARTY or a third party, as
the case may be), directly or indirectly, now or hereafter during the term of
this Agreement. Subsidiary also means any corporation, company or other entity
in which a party (meaning a PARTY or a third party as appropriate): (i) owns or
controls at least forty percent (40%) of such shares or stock and (ii) controls
and/or designates more than fifty percent (50%) of the members of the board of
directors during the term of this Agreement. Any corporation, company or other
entity which would at any time be a SUBSIDIARY of a party, by reason of the
foregoing shall be considered a SUBSIDIARY for the purposes of this Agreement
only so long as the ownership or control, directly or indirectly, by such party,
meets the conditions set forth above.

14.      "TI ENTITIES"

         Means TI and its SUBSIDIARIES.

15.      "TI-PARTICIPATION PATENT(S)"

         Means PATENTS arising out of and covering inventions developed or made
by one or more employees, agents or independent contractors of a TI ENTITY
(including employees of a TI ENTITY temporarily dispatched, assigned or
otherwise participating in any project of, or placed on the payroll of, any
third party) singly, or jointly with a third party, and where approval or
consent by a party other than a TI ENTITY is required prior to granting a
license or sublicense thereunder.

16.      "TI PATENT(S)"

         Means PATENTS which, at any time during the term of this Agreement, a
TI ENTITY owns or controls and under which a TI ENTITY has the right to grant
releases or licenses of the scope granted pursuant to this Agreement.

17.      "UMC ENTITIES"

Means UMC and its SUBSIDIARIES.


                                      19

                               UMC CONFIDENTIAL
<PAGE>

18.      "UMC SPINOFF-PARTICIPATION PATENT(S)"

         Means PATENTS arising out of and covering inventions developed or made
by one or more employees, agents or o independent contractors of UMC SPINOFF
temporarily dispatched, assigned, or otherwise participating in any project of,
or placed on the payroll of any third party) singly, or jointly with a o third
party, and where approval or consent by a party other than a party hereto is
required prior to granting a license or sublicense thereunder.

19.      "UMC SPINOFF PATENT(S)"

         Means PATENTS which, at any time during the term of this Agreement that
UMC SPINOFF owns or controls and under which UMC SPINOFF has the right to grant
releases or licenses of the scope granted pursuant to this Agreement.

20. "UMC SPINOFF BRANDED PRODUCT(S)"

         Means any PRODUCT

         (i)      Sold to UMC SPINOFF by a UMC ENTITY; and

         (ii)     Sold by UMC SPINOFF under a brand name or designation of UMC
                  SPINOFF or whose electrical design includes substantial,
                  material or meaningful design contribution from UMC SPINOFF;
                  and

         (iii)    Manufactured at least through the wafer fabrication stage by a
                  UMC ENTITY; and

         (iv)     Which is sold by UMC SPINOFF with a patent indemnity.


                                      20

                               UMC CONFIDENTIAL
<PAGE>

                                    EXHIBIT B
                                LICENSE AGREEMENT






















                                      21

                               UMC CONFIDENTIAL