<PAGE>
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                            ------------------------

                                   FORM 10-Q

<TABLE>
<C>        <S>
   /X/     QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
           SECURITIES EXCHANGE ACT OF 1934
</TABLE>

               FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2000
                                       OR

<TABLE>
<C>        <S>
   / /     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
           SECURITIES EXCHANGE ACT OF 1934
</TABLE>

        FOR THE TRANSITION PERIOD FROM ______________ TO ______________

                        COMMISSION FILE NUMBER 000-31259

                            ------------------------

                        INTEGRATED TELECOM EXPRESS, INC.

             (Exact name of registrant as specified in its charter)

<TABLE>
<S>                                       <C>
                DELAWARE                                 77-0403748
      (State or other jurisdiction          (IRS Employer Identification Number)
   of incorporation or organization)

           2710 WALSH AVENUE
        SANTA CLARA, CALIFORNIA                            95051
(Address of principal executive offices)                 (Zip Code)
</TABLE>

                                 (408) 980-8689

              (Registrant's telephone number, including area code)

                                      N/A

   (Former name, former address and former fiscal year, if changed since last
                                    report)

                            ------------------------

    Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.  Yes /X/  No / /

    The number of shares outstanding of the Registrant's Common Stock as of
November 13, 2000 was 42,706,101.

--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>
                        INTEGRATED TELECOM EXPRESS, INC.
                                     INDEX

<TABLE>
<CAPTION>
                                                                       PAGE NO.
                                                                       --------
<S>      <C>                                                           <C>
Part I   Financial Information (unaudited)...........................      2
Item 1.  Condensed Balance Sheets as of September 30, 2000 and
           December 31, 1999.........................................      2
         Condensed Statements of Operations for the Three Months and
           Nine Months Ended September 30, 2000 and 1999.............      3
         Condensed Statements of Cash Flows for the Nine Months Ended
           September 30, 2000 and 1999...............................      4
         Notes to Condensed Financial Statements.....................      5

Item 2.  Management's Discussion and Analysis of Financial Condition
           and Results of Operations.................................      8

Item 3.  Quantitative and Qualitative Disclosures About Market
           Risk......................................................     23

Part II  Other Information...........................................     24
Item 1.  Legal Proceedings...........................................     24
Item 2.  Changes in Securities and Use of Proceeds...................     24
Item 3.  Defaults Upon Senior Securities.............................     24
Item 4.  Submission of Matters to a Vote of Security Holders.........     24
Item 5.  Other Information...........................................     25
Item 6.  Exhibits and Reports on Form 8-K............................     25

SIGNATURES...........................................................     26

EXHIBIT INDEX........................................................     27
</TABLE>
<PAGE>
PART I FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

                        INTEGRATED TELECOM EXPRESS, INC.

                            CONDENSED BALANCE SHEETS

                           (UNAUDITED, IN THOUSANDS)

<TABLE>
<CAPTION>
                                                              SEPTEMBER 30, 2000   DECEMBER 31, 1999
                                                              ------------------   -----------------
<S>                                                           <C>                  <C>
                                              ASSETS:
Current assets:
  Cash and cash equivalents.................................       $148,836            $ 38,513
  Trade receivables, net....................................          2,913               1,373
  Inventories...............................................          5,002               1,893
  Prepaid expenses and other current assets.................          1,846               1,411
                                                                   --------            --------
    Total current assets....................................        158,597              43,190

  Property and equipment, net...............................          7,238               2,140
  Licenses, net.............................................          6,534               6,828
  Other assets..............................................            718                 793
                                                                   --------            --------
    Total assets............................................       $173,087            $ 52,951
                                                                   ========            ========

                  LIABILITIES, MANDATORILY REDEEMABLE CONVERTIBLE PREFERRED STOCK
                                     AND STOCKHOLDERS' EQUITY:
Current liabilities:
  Accounts payable..........................................       $  6,374            $  1,852
  Accrued expenses and other liabilities....................          3,870                 875
  Current portion of payable for licenses...................          2,625               2,625
  Current portion under capital leases......................          1,252                  --
                                                                   --------            --------
    Total current liabilities...............................         14,121               5,352
                                                                   --------            --------
  Long term liabilities.....................................          2,522               1,500
                                                                   --------            --------
    Total liabilities.......................................         16,643               6,852
                                                                   --------            --------
  Mandatorily redeemable convertible preferred stock........             --              45,000
                                                                   --------            --------
Stockholders' equity (*)
  Common stock..............................................             42                  23
  Additional paid-in capital................................        236,900              30,745
  Accumulated deficit.......................................        (45,086)            (28,428)
  Notes receivable from stockholders........................           (502)                 --
  Deferred stock-based compensation.........................        (34,910)             (1,241)
                                                                   --------            --------
    Total stockholders' equity..............................        156,444               1,099
                                                                   --------            --------
Total liabilities, mandatorily redeemable convertible
  preferred stock and stockholders' equity..................       $173,087            $ 52,951
                                                                   ========            ========
</TABLE>

------------------------

(*) Common shares outstanding were 42,701 and 23,369 as of September 30, 2000
    and December 31, 1999 respectively.

                            See accompanying notes.

                                       2
<PAGE>
                        INTEGRATED TELECOM EXPRESS, INC.

                       CONDENSED STATEMENT OF OPERATIONS

                   (UNAUDITED IN THOUSANDS EXCEPT SHARE DATA)

<TABLE>
<CAPTION>
                                            FOR THE THREE MONTHS ENDED    FOR THE NINE MONTHS ENDED
                                                   SEPTEMBER 30,                SEPTEMBER 30,
                                            ---------------------------   -------------------------
                                                2000           1999          2000          1999
                                            ------------   ------------   -----------   -----------
<S>                                         <C>            <C>            <C>           <C>
Net revenue...............................  $    17,185    $       499    $    31,586   $       795

Cost of revenue (including stock-based
  compensation expenses of $440, $0, $499
  and $0).................................        8,738            632         17,269         1,348
                                            -----------    -----------    -----------   -----------
Gross profit (loss).......................        8,447           (133)        14,317          (553)

Operating expenses:
  Research and development (exclusive of
    stock-based compensation expense of
    $2,917, $22, $5,750 and $74)..........        3,922          1,883          9,869         5,845
  Sales and marketing (exclusive of stock-
    based compensation expense of $1,677,
    $19, $3,279 and $64)..................        2,108            696          4,853         2,072
  General and administrative (exclusive of
    stock-based compensation expense of
    $2,800, $13, $6,250 and $58...........        1,160            526          2,833         2,159
  Amortization of deferred stock-based
    compensation..........................        7,394             54         15,279           196
                                            -----------    -----------    -----------   -----------
Total operating expenses..................       14,584          3,159         32,834        10,272
                                            -----------    -----------    -----------   -----------
Operating loss............................       (6,137)        (3,292)       (18,517)      (10,825)

Interest and other income, net............          954            137          1,860           413
                                            -----------    -----------    -----------   -----------
Net loss..................................  $    (5,183)   $    (3,155)   $   (16,657)  $   (10,412)
                                            ===========    ===========    ===========   ===========
Basic and diluted net loss per share......  $     (0.16)   $     (0.14)   $     (0.63)  $     (0.45)
                                            ===========    ===========    ===========   ===========
Weighted average shares of common stock
  outstanding used in computing basic and
  diluted net loss per share..............  $32,579,823    $23,172,225    $26,517,262   $23,122,380
                                            ===========    ===========    ===========   ===========
</TABLE>

                            See accompanying notes.

                                       3
<PAGE>
                        INTEGRATED TELECOM EXPRESS, INC.

                       CONDENSED STATEMENT OF CASH FLOWS

                           (UNAUDITED, IN THOUSANDS)

<TABLE>
<CAPTION>
                                                               NINE MONTHS ENDED
                                                                 SEPTEMBER 30,
                                                              -------------------
                                                                2000       1999
                                                              --------   --------
<S>                                                           <C>        <C>
Cash flows from operating activities
Net loss....................................................  $(16,657)  $(10,412)
Adjustments to reconcile net loss to net cash used by
  operating activities:
  Depreciation and amortization expense.....................     2,837      1,987
  Amortization of deferred compensation.....................    15,779        196
  Changes in current assets and liabilities:
    Trade receivable........................................    (1,540)       (56)
    Inventory...............................................    (3,109)      (372)
    Receivable from ITE.....................................       148        166
    Prepaid expenses and other current assets...............      (871)      (657)
    Accounts payable........................................     4,522        377
    Accrued expenses and other liabilities..................     2,995        680
                                                              --------   --------
  Net cash provided by (used in) operating activities.......     4,104     (8,091)

Cash flows from investing activities
  Purchases of property, equipment and licenses.............    (4,169)    (3,330)
  Proceeds from sale of assets to ITE.......................        --         28
  Proceeds from note receivable due from ITE................       363        343
                                                              --------   --------
  Net cash used in investing activities.....................    (3,806)    (2,959)

Cash flows from financing activities
  Principal payments on capital lease.......................    (1,199)        --
  Proceeds from issuance of common stock, net...............   111,224        175
  Proceeds from issuance of preferred stock, net............        --     20,353
                                                              --------   --------
  Net cash provided by financing activities.................   110,025     20,528

Net increase in cash and cash equivalents...................   110,323      9,478
Cash and cash equivalents at beginning of period............    38,513     14,422
                                                              --------   --------
Cash and cash equivalents at end of period..................  $148,836   $ 23,900
                                                              ========   ========
Supplemental disclosure of non-cash investing and financing
  activities:
  Payable issued for licensing agreements...................  $    250   $     --
  Assets purchased under capital leases.....................  $  4,598   $     --
  Conversion of preferred stock to common stock upon IPO....  $ 45,000   $     --
</TABLE>

                            See accompanying notes.

                                       4
<PAGE>
                         NOTES TO FINANCIAL STATEMENTS

NATURE OF OPERATIONS

    Integrated Telecom Express, Inc. ("ITeX" or the "Company", formerly
Integrated Technology Express, Inc.) was incorporated in California in May 1995
and re-incorporated in Delaware in May 1999. The Company designs and sells
integrated circuit and software solutions to the broadband access communications
equipment industry. The Company's products include integrated circuits,
software, turn-key reference designs and test systems that enable communications
equipment manufacturers to provide high-speed, cost-effective, asymmetric
digital subscriber line, or ADSL, equipment to communications service providers
and their customers.

    United Microelectronics Corporation ("UMC"), a public company in Taiwan,
directly and indirectly owned 25.8% of the Company's outstanding common stock at
September 30, 2000.

UNAUDITED INTERIM FINANCIAL STATEMENT

    The accompanying unaudited condensed financial statements as of
September 30, 2000 and for the three months and nine months ended September 30,
2000 and 1999 have been prepared pursuant to the rules and regulations of the
Securities and Exchange Commission for interim financial reporting. The
unaudited condensed interim financial statements have been prepared on the same
basis as the annual financial statements and, in the opinion of management,
reflect all adjustments, which include only normal recurring adjustments,
necessary to present fairly the Company's financial position, results of
operations and cash flows as of and for the three months and nine months ended
September 30, 2000 and 1999. These financial statements and notes thereto are
unaudited and should be read in conjunction with ITeX's audited financial
statements included in ITeX's Form S-1 Registration Statement, as amended, filed
with the Securities and Exchange Commission. The balance sheet as of
December 31, 1999 was derived from audited financial statements, but does not
include all required disclosures required by generally accepted accounting
principles. The results for the nine months ended September 30, 2000 are not
necessarily indicative of the expected results for any other interim period or
the year ending December 31, 2000. Certain prior period balances have been
reclassified to conform to the current period presentation.

CONCENTRATIONS OF CREDIT RISK

    Financial instruments that potentially subject the Company to significant
concentration of credit risk consist principally of cash, cash equivalents,
short-term investments, and accounts receivable. The Company places its
short-term investments in commercial paper, money market funds, government and
non-government debt securities and certificates of deposit. The Company is
exposed to credit risk in the event of default by these institutions to the
extent of the amount recorded on the balance sheet. Accounts receivable are
billed in U. S. currency derived from revenues earned from customers primarily
located in Asia, the United States and Europe. The Company performs ongoing
credit evaluations of its customers' financial condition and generally does not
require collateral, but obtains letters of credit or prepayments as deemed
necessary.

CUSTOMER CONCENTRATIONS

    Two customers accounted for 13.9% and 12.0% of revenue in the three months
ended September 30, 2000 and one customer accounted for 19.8% of revenue in the
nine months ended September 30, 2000. At September 30, 2000, three customers
accounted for 30.8%, 22.6% and 11.6% of total trade receivables. Three customers
accounted for 12.1%, 10.8% and 10.0% of revenue in the three months ended
September 30, 1999 and no customer accounted for 10% or more of revenue for the
nine months ended September 30, 1999. At September 30, 1999, five customers
accounted for 43.9%, 13.9%, 13.9%, 13.0% and 11.0% of total trade receivables.

                                       5
<PAGE>
USE OF ESTIMATES

    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ from those estimates.

COMPREHENSIVE INCOME

    The Company has adopted SFAS 130, "Reporting Comprehensive Income;" however,
the effects of the adoption were immaterial to all periods presented and
comprehensive loss comprises only the accumulated loss.

BUSINESS SEGMENT INFORMATION

    The Company operates in one business segment, the sale of products for the
ADSL market. The Company sells primarily to original equipment manufacturers and
companies in the communication industries. The Company has sales and marketing
operations located in the United States and Taiwan and derives revenue from the
following geographic locations.

<TABLE>
<CAPTION>
                                  THREE MONTHS ENDED               NINE MONTHS ENDED
                            ------------------------------   -----------------------------
                            SEPTEMBER 30,    SEPTEMBER 30,   SEPTEMBER 30,   SEPTEMBER 30,
                                 2000            1999            2000            1999
                            --------------   -------------   -------------   -------------
                                     (UNAUDITED)                      (UNAUDITED)
                                                    (IN THOUSANDS)
<S>                         <C>              <C>             <C>             <C>
Net revenue:
  Asia
    Korea.................      $11,182         $  105          $16,005         $  111
    Taiwan................        2,037            139            4,182            353
    Rest of Asia..........        1,210             64            2,201            141
    Total of Asia.........       14,429            308           22,388            605
  Europe..................          235              7            1,143              7
  USA.....................        2,521            184            8,055            183
                                -------         ------          -------         ------
      Total...............       17,185            499           31,586            795

Long-lived assets:
  USA.....................       13,760          3,109           13,760          3,109
  Taiwan..................           12             20               12             20
                                -------         ------          -------         ------
      Total...............       13,772          3,129           13,772          3,129
</TABLE>

    Transfers between geographic areas are recorded at amounts generally above
cost and in accordance with the rules and regulations of the respective
governing tax authorities. Long-lived assets of geographic areas are those
assets used in the Company's operations in each area.

NET LOSS PER SHARE

    Basic and diluted net loss per common share is presented in conformity with
the Statement of Financial Accounting Standards No. 128, "Earnings Per Share"
(FAS 128), for all periods presented. In accordance with FAS 128, basic and
diluted net loss per share have been computed using the weighted average number
of shares of common stock outstanding during the period, less shares subject to

                                       6
<PAGE>
repurchase. The following table presents the computation of basic and diluted
net loss per share (in thousands, except per share amounts):

<TABLE>
<CAPTION>
                                                         FOR THE THREE MONTHS    FOR THE NINE MONTHS
                                                         ENDED SEPTEMBER 30,     ENDED SEPTEMBER 30,
                                                        ----------------------   -------------------
                                                          2000          1999       2000       1999
                                                        --------      --------   --------   --------
<S>                                                     <C>           <C>        <C>        <C>
Net loss applicable to common stockholders:...........  $(5,183)      $(3,155)   $(16,657)  $(10,412)
                                                        =======       =======    ========   ========
Basic and diluted:
Weighted average shares of common stock outstanding...   32,829        23,172      26,634     23,122
Less weighted average shares subject to repurchase....      249            --         117         --
Weighted average shares used in computing basic and
  diluted, net loss per share applicable to common
  stockholders........................................   32,580        23,172      26,517     23,122
                                                        =======       =======    ========   ========
Basic and diluted net loss per share applicable to
  common stockholders.................................  $ (0.16)      $ (0.14)   $  (0.63)  $  (0.45)
                                                        =======       =======    ========   ========
</TABLE>

FINANCIAL INSTRUMENTS

    The Company invests its excess cash in commercial paper, money market funds,
government and non-government debt securities and certificates of deposits. The
Company considers all highly liquid debt instruments purchased with an original
maturity of three months or less to be cash equivalents. Cash equivalents are
recorded at cost, which approximates fair value.

    Investments with an original maturity at the time of purchase of over three
months are classified as short-term investments. Under the Financial Accounting
Standards Board's Statement of Financial Accounting Standards No. 115,
"Accounting for Certain Investments in Debt and Equity Securities", management
classifies investments as available-for-sale at the time of purchase and
periodically reevaluates such designation.

    As of September 30, 2000 and December 31, 1999, all of the Company's
investments in debt securities were classified as available-for-sale with
changes in market value recorded as unrealized gains and losses in accumulated
other comprehensive income until their disposition. Realized gains and losses
and declines in value judged to be other than temporary on available-for-sale
securities are included in interest income. The cost of securities sold is based
on the specific-identification method.

INVENTORY

    Inventory is stated at the lower cost or market, cost being determined using
the average cost method. The components of inventory are as follows (in
thousands):

<TABLE>
<CAPTION>
                                                           FOR THE NINE MONTHS
                                                           ENDED SEPTEMBER 30,
                                                           --------------------
                                                             2000        1999
                                                           ---------   --------
                                                               (UNAUDITED)
<S>                                                        <C>         <C>
Inventories:
  Raw material...........................................   $1,303      $  119
  Work-in-progress.......................................    1,149          --
  Finished goods.........................................    2,550       1,774
                                                            ------      ------
Inventory--net...........................................   $5,002      $1,893
                                                            ======      ======
</TABLE>

                                       7
<PAGE>
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

    This Report contains certain forward-looking statements (as such term is
defined in Section 27A of the Securities Act of 1933 and Section 21E of the
Securities Exchange Act of 1934) and information relating to us that are based
on the beliefs of our management as well as assumptions made by and information
currently available to our management. These statements are denoted by an
asterisk (*). Such statements reflect our judgment as of the date of this Report
with respect to future events, the outcome of which is subject to certain risks,
including the factors set forth under the heading "Risk Factors," which may have
a significant impact on our business, operating results or financial condition.
Investors are cautioned that these forward-looking statements are inherently
uncertain. Should one or more of these risks or uncertainties materialize, or
should underlying assumptions prove incorrect, actual results or outcomes may
vary materially from those described herein. Although we believe that the
expectations reflected in these forward-looking statements are reasonable, we
cannot guarantee future results, levels of activity, performance or
achievements. Moreover, neither we nor any other person assumes responsibility
for the accuracy and completeness of these forward-looking statements. We
undertake no obligation to update these forward-looking statements.

    The following discussion and analysis should be read in conjunction with the
condensed financial statements and the notes thereto included in Item 1 of this
Report and with the audited financial statements included in our Form S-1
Registration Statement (the "Registration Statement"), as amended, filed with
the SEC on August 17, 2000 (File No. 333-39128).

OVERVIEW

    We provide integrated circuit and software products to the broadband access
communications equipment industry. Our products include integrated circuits,
software, production designs and test systems that enable communications
equipment manufacturers to provide high-speed, cost-effective asymmetric digital
subscriber line, or ADSL, equipment to communications service providers and
their customers. Our software includes programs that enable the basic function
of our integrated circuits and reference designs, and that provide access to the
Internet, permitting equipment utilizing our solutions to communicate with
telecommunication service providers' central office equipment.

    We were incorporated in California in May 1995 as Integrated Technology
Express, Inc. In early 1996, United Microelectronics Corporation contributed
cash and licensed technology to us in return for an equity interest. Our initial
products included personal computer data interface and integrated circuits using
analog and digital signals. In early 1997, we began to develop integrated
circuits and software solutions for the ADSL market. In late 1997, we sold our
personal computer-related operations, changed our name to Integrated Telecom
Express, Inc. and focused our product development efforts exclusively on the
ADSL market.

    Subsequent to the sale of our personal computer-related business and through
1998, we were a development stage company and had no product revenue. In
April 1998, we licensed certain ADSL technology from Alcatel Bell N.V. to
complement our intellectual property. In the first quarter of 1999, we began
shipping our production designs and development tools for our initial ADSL
products. In the third quarter of 1999, we began volume shipments of these
products and recorded our first significant product revenue. Our production
designs are complete sets of instructions describing how to build an ADSL modem
with our integrated circuits and software. Beginning in the fourth quarter of
1999, we significantly increased our investment in operations, including
research and development and sales and marketing.

    We sell our products to manufacturers of customer premises equipment and
telecommunications service providers' central office equipment. Our revenue is
currently derived from sales of our Apollo and SAM product families. Sales of
Apollo Two products represented 20.5% of revenue in the nine

                                       8
<PAGE>
months ended September 30, 1999 and 88.5% of revenue in the nine months ended
September 30, 2000. We anticipate that our Apollo and SAM product families will
continue to generate substantially all of our revenue for the foreseeable
future.* To date, we have derived a substantial portion of our revenue from a
limited number of customers and we expect to continue to rely on a limited
number of customers.* During the nine months ended September 30, 1999, no
customer accounted for more than 10% of our revenue. In the nine months ended
September 30, 2000, one customer accounted for 19.8% of our revenue.

    We have focused our initial sales and marketing efforts on worldwide
communications equipment manufacturers. We currently sell through our direct
sales force, independent sales representatives and distributors. Our sales
personnel are based in Santa Clara, California; Round Rock, Texas and Taipei,
Taiwan. For the nine months ended September 30, 1999, sales to customers in Asia
accounted for 76.1% of our revenue, of which our sales to customers in South
Korea constituted 13.96% of this revenue. For the nine months ended
September 30, 2000, sales to customers in Asia accounted for 70.9% of our
revenue, of which sales to customers in South Korea constituted 50.67% of this
revenue. We anticipate that the majority of our revenue will continue to be
derived from Asia, especially South Korea, for the foreseeable future.* All
revenue is denominated in U.S. dollars.

    In general, we require approximately six months to achieve volume shipments
of our products after we first contact a customer, if volume shipments are
achieved at all. This process includes sale of our turn-key reference design,
customer board development, testing, field trials and qualification by service
providers and receipt of volume orders. As a result, a significant period of
time may elapse between our sales efforts and our realization of revenue.* Our
customers are not obligated by long-term contracts to purchase our products and
can generally cancel or reschedule orders on short notice.

    Revenue from product sales other than to distributors is recognized upon
shipment if a signed purchase order exists, the fee is fixed and determinable,
collection of resulting receivables is probable and product returns are
reasonably estimable. Revenue from shipments to distributors with the right of
return are deferred until the distributor resells the inventory. Upon shipment,
we also provide for the estimated costs that may be incurred for product
warranties. We develop and market personal computer network interface cards to
the ADSL market in addition to the sale of integrated circuit and software
products. We outsource the manufacturing of these cards to a manufacturer in
Taiwan, which incorporates our integrated circuits.

    We outsource the fabrication, packaging and testing of our integrated
circuits. Therefore, a significant portion of our cost of revenue consists of
payments to our manufacturers. Our cost of revenue also includes expenses
relating to our internal operations as well as the amortization of fees for
licensed technology. In April 1998, we licensed certain technology from Alcatel,
an unrelated third party, to develop, manufacture and distribute products. The
terms of the agreement call for an initial licensing fee of $5 million with
additional royalties paid on sales of products developed at rates ranging from
2.5% to 6%. Minimum royalties payable under the contract amount to $500,000,
$1,000,000 and $1,500,000 for 1999, 2000 and 2001. The licensing fee is
amortized over the estimated useful life of seven years with royalties expensed
in the year incurred.

    Research and development expenses, exclusive of stock-based compensation
expense, consist primarily of salaries and related personnel expenses, prototype
development costs, fees paid to outside service providers and overhead allocated
to product development of our integrated circuits, software and underlying
technologies. All research and development costs are expensed as incurred. Our
research and development efforts are periodically subject to significant,
non-recurring costs and fees that can cause significant variability in our
quarterly research and development expenses. We expect to increase our research
and development expenses as we continue to develop new products and improve our
core technologies.*

                                       9
<PAGE>
    Sales and marketing expenses, exclusive of stock-based compensation expense,
consist primarily of salaries, commissions and related expenses for personnel
engaged in sales, marketing, applications engineering support and customer
service functions, costs associated with promotional and other marketing
expenses. We intend to expand our direct and indirect sales operations
substantially, both domestically and internationally.* In addition, we expect
sales and marketing expenses to increase as we expand our customer service and
support organization.*

    General and administrative expenses, exclusive of stock-based compensation
expense, include personnel and related costs associated with executive
management, finance, accounting, human resources, information services and
facilities.

    Deferred stock-based compensation represents the difference between the
grant price and the deemed fair value of our common stock options granted during
these periods. Deferred stock-based compensation expense for options granted is
being amortized using the graded vesting method, in accordance with Financial
Accounting Standards Board, or FASB, Interpretation No. 28, over the vesting
period of each respective option, which is generally four years. Under the
graded vesting method, each option grant is separated into portions based on its
vesting terms, which results in acceleration of amortization expense for the
overall award. Deferred stock-based compensation for options granted to
non-employees is accounted for in accordance with the provisions of Statement of
Financial Accounting Standards, or SFAS, No. 123 and Emerging Issues Task Force
96-18. Unamortized deferred stock-based compensation is presented as a reduction
of stockholders' equity.

    We experienced a net loss of 10.4 million for the nine months ended
September 30, 1999 and a net loss of 16.7 million for the nine months ended
September 30, 2000. Our accumulated deficit as of September 30, 2000 was 45.1
million.

RESULTS OF OPERATIONS

THREE MONTHS ENDED SEPTEMBER 30, 2000 COMPARED TO THREE MONTHS ENDED
  SEPTEMBER 30, 1999

    NET REVENUE.  Net revenue increased from $499,000 for the three months ended
September 30, 1999 to $17.2 million for the three months ended September 30,
2000. This increase was primarily attributable to the commencement of volume
sales of Apollo and SAM products principally in the second half of 1999. For the
three months ended September 30, 2000, our Apollo Two products accounted for
95.6% of our revenue. We expect that sales of our Apollo products will continue
to account for a high percentage of net revenue for the foreseeable future.*

    COST OF REVENUE.  Cost of revenue increased from $632,000 for the three
months ended September 30, 1999 to $8.7 million for the three months ended
September 30, 2000. This increase was primarily attributable to the commencement
of volume sales of Apollo Two and SAM products in the second half of 1999. As a
percentage of revenue, cost of revenue decreased from -26.7% for the three
months ended September 30, 1999 to 49.2% for the three months ended
September 30, 2000, primarily due to the net effect of the lower impact of fixed
license fee amortization over a larger revenue base and an increase of the
amortization of deferred stock-based compensation. License fee amortization was
$304,000 and $821,000 for the three months ended September 30, 1999 and 2000.
Deferred stock based compensation was $0 and $440,000 for the three months ended
September 30, 1999 and 2000

    RESEARCH AND DEVELOPMENT.  Research and development expenses, exclusive of
stock-based compensation expense, increased 108.3% from $1.9 million for the
three months ended September 30, 1999 to $3.9 million for the three months ended
September 30, 2000. The increase is primarily attributable to increases in
compensation levels and payroll-related expenses associated with additional
engineering personnel. Amortization of deferred stock-based compensation related
to research and development amounted to $22,000 and $2.9 million for the three
months ended September 30, 1999 and 2000.

                                       10
<PAGE>
    SALES AND MARKETING.  Sales and marketing expenses, exclusive of stock-based
compensation, increased 202.9% from $696,000 for the three months ended
September 30, 1999 to $2.1 million for the three months ended September 30,
2000. This increase was primarily attributable to increased compensation expense
and sales commissions of $1.2 million which are determined as a percentage of
revenue. Amortization of deferred stock-based compensation related to sales and
marketing activities amounted to $19,000 and $1.7 million for the three months
ended September 30, 1999 and 2000.

    GENERAL AND ADMINISTRATIVE.  General and administrative expenses, exclusive
of stock-based compensation expense, increased 120.5% from $526,000 for the
three months ended September 30, 1999 to $1.2 million for the three months ended
September 30, 2000. This increase was primarily attributable to increased
personnel and higher compensation levels. Amortization of deferred stock-based
compensation related to general and administrative activities amounted to
$13,000 and $2.8 million for the three months ended September 30, 1999 and 2000.

    AMORTIZATION OF DEFERRED STOCK-BASED COMPENSATION.  Amortization of deferred
stock-based compensation increased from $54,000 for the three months ended
September 30, 1999 to $7.4 million for the three months ended September 30,
2000. This increase was primarily attributable to options granted to new and
existing employees.

    INTEREST AND OTHER INCOME, NET.  Interest and other income, net increased
596.4% from $137,000 for the three months ended September 30, 1999 to $954,000
for the three months ended September 30, 2000. The increase was primarily
attributable to increased interest income earned on a higher average cash
balance resulting from our Series B preferred stock financing in November 1999
and our initial public offering in August 2000.

    NET LOSS.  Net loss increased 64.3% from $3.2 million for the three months
ended September 30, 1999 to $5.2 million for the three months ended
September 30, 2000. This increase was primarily attributable to higher gross
profit, offset by increased operating expenses.

NINE MONTHS ENDED SEPTEMBER 30, 2000 COMPARED TO NINE MONTHS ENDED
  SEPTEMBER 30, 1999

    NET REVENUE.  Net revenue increased from $795,000 for the nine months ended
September 30, 1999 to $31.6 million for the nine months ended September 30,
2000. This increase was primarily attributable to the commencement of volume
sales of Apollo and SAM products principally in the second half of 1999. For the
nine months ended September 30, 2000, our Apollo Two products accounted for
86.0% of our revenue.

    COST OF REVENUE.  Cost of revenue increased from $1.3 million for the nine
months ended September 30, 1999 to $17.3 million for the nine months ended
September 30, 2000. This increase was primarily attributable to the commencement
of volume sales of Apollo Two and SAM products in the second half of 1999. As a
percentage of revenue, cost of revenue decreased from -69.6% for the nine months
ended September 30, 1999 to 45.3% for the nine months ended September 30, 2000,
primarily due to the net effect of the lower impact of fixed license fee
amortization over a larger revenue base and an increase of the amortization of
deferred stock-based compensation. License fee amortization was $911,000 and
$1.7 million for the nine months ended September 30, 1999 and 2000. Deferred
stock based compensation was $0 and $499,000 for the nine months ended
September 30, 1999 and 2000

    RESEARCH AND DEVELOPMENT.  Research and development expenses, exclusive of
stock-based compensation expense, increased 68.8% from $5.8 million for the nine
months ended September 30, 1999 to $9.9 million for the nine months ended
September 30, 2000. The increase is primarily attributable to increases in
compensation levels and payroll-related expenses associated with additional
engineering personnel. Amortization of deferred stock-based compensation related
to research and

                                       11
<PAGE>
development amounted to $74,000 and $5.8 million for the nine months ended
September 30, 1999 and 2000.

    SALES AND MARKETING.  Sales and marketing expenses, exclusive of stock-based
compensation, increased 134.2% from $2.1 million for the nine months ended
September 30, 1999 to $4.9 million for the nine months ended September 30, 2000.
This increase was primarily attributable to increased compensation expense and
sales commissions which are determined as a percentage of revenue. Amortization
of deferred stock-based compensation related to sales and marketing activities
amounted to $64,000 and $3.3 million for the nine months ended September 30,
1999 and 2000.

    GENERAL AND ADMINISTRATIVE.  General and administrative expenses, exclusive
of stock-based compensation expense, increased 31.2% from $2.2 million for the
nine months ended September 30, 1999 to $2.8 million for the nine months ended
September 30, 2000. This increase was primarily attributable to increased
personnel and higher compensation levels. Amortization of deferred stock-based
compensation related to general and administrative activities amounted to
$58,000 and $6.3 million for the nine months ended September 30, 1999 and 2000.

    AMORTIZATION OF DEFERRED STOCK-BASED COMPENSATION.  Amortization of deferred
stock-based compensation increased from $196,000 for the nine months ended
September 30, 1999 to $15.3 million for the nine months ended September 30,
2000. This increase was primarily attributable to options granted to new and
existing employees.

    INTEREST AND OTHER INCOME, NET.  Interest and other income, net increased
350.4% from $413,000 for the nine months ended September 30, 1999 to
$1.9 million for the nine months ended September 30, 2000. The increase was
primarily attributable to increased interest income earned on a higher average
cash balance resulting from our Series B preferred stock financing in
November 1999 and our initial public offering in August 2000.

    NET LOSS.  Net loss increased 60.0% from $10.4 million for the nine months
ended September 30, 1999 to $16.7 million for the nine months ended
September 30, 2000. This increase was primarily attributable to higher gross
profit, offset by increased operating expenses.

LIQUIDITY AND CAPITAL RESOURCES

    Prior to our initial public offering, we financed our operations primarily
through private sales of approximately $25.9 million and $45.0 million of common
stock and convertible preferred stock, respectively (with the issuance of
1,214,286 warrants in conjunction with our preferred stock financings). On
August 23, 2000, we completed our initial public offering of 6,440,000 shares of
common stock. Net proceeds to the company as a result of the offering, plus the
proceeds for a simultaneous private placement of 166,667 shares of common stock,
were approximately $109.1 million. For the nine months ended September 30, 2000,
we also generated $2.1 million from the exercise of stock options, net of
repurchases.

    Net cash provided by operating activities was $4.1 million for the nine
months ended September 30, 2000, compared to $8.1 million used in operations for
the similar period in fiscal 1999. Operating cash flows reflect the Company's
increased sales resulting in a net loss of $16.7 million offset by noncash
charges (depreciation and amortization) of $18.6 million, and a net working
capital increase of approximately $2.1 million.

    Cash used in investing activities increased 28.5% from $3.0 million for the
nine months ended September 30, 1999 to $3.8 million for the nine months ended
September 30, 2000. This increase was primarily due to increases in purchases of
property, equipment and licenses.

    Cash generated from financing activities increased 436.0% from
$20.5 million in the nine months ended September 30, 1999 to $110.0 million in
the nine months ended September 30, 2000 This was

                                       12
<PAGE>
primarily due to the net proceeds of $109.1 million from our initial public
offering and simultaneous private placement in August 2000.

    We expect to devote substantial capital resources to continue our research
and development efforts, to hire and expand our sales, support, marketing, and
product development organizations, to expand marketing programs, to establish
additional facilities worldwide and to fund other general corporate activities.*
In addition, we may devote capital resources to acquire complementary products,
technologies or businesses.* We currently anticipate that the net proceeds from
our initial public offering, together with our current cash, cash equivalents,
and short-term investments will be sufficient to meet our anticipated cash needs
for working capital and capital expenditures for at least the next 12 months.*

                                       13
<PAGE>
RISK FACTORS

RISKS RELATING TO OUR BUSINESS

    You should carefully consider the risks described below and all of the
information contained in this Report. If any of the following risks actually
occur, our business, financial condition and results of operations could be
harmed, the trading price of our common stock could decline, and you may lose
all or part of your investment in our common stock.

    WE COMMENCED OPERATIONS AS A SUPPLIER OF INTEGRATED CIRCUIT AND SOFTWARE
SOLUTIONS IN LATE 1997, AND THEREFORE YOU WILL HAVE LIMITED HISTORICAL OPERATING
DATA TO EVALUATE OUR BUSINESS AND WE MAY NOT BE ABLE TO ACCURATELY PROJECT OUR
FUTURE OPERATING RESULTS.

    From May 1995 until December 1997, we designed integrated circuits for
personal computers. In December 1997, we sold that business and focused
exclusively on the development of integrated circuit and software solutions for
the broadband access communications equipment industry with an initial emphasis
on products for the asymmetric digital subscriber line, or ADSL, market. We
began shipping products for the ADSL market in volume in the third quarter of
1999. Therefore, we have limited historical operating data that can be used in
evaluating our business and in projecting future operating results.

    WE HAVE A HISTORY OF LOSSES, WE EXPECT FUTURE LOSSES AND WE MAY NOT ACHIEVE
OR MAINTAIN PROFITABILITY.

    We incurred net losses of $16.7 million in the nine months ended
September 30, 2000. As of September 30, 2000, we had an accumulated deficit of
$45.1 million. We anticipate that we will incur net losses for the foreseeable
future, and these losses may be substantial. We may not be able to generate
sufficient revenue to achieve or maintain profitability.

    BECAUSE OUR OPERATING RESULTS WILL FLUCTUATE FROM QUARTER TO QUARTER, THE
PRICE OF OUR STOCK MAY DECLINE.

    Our operating results have fluctuated in the past and will fluctuate in the
future on a quarterly and an annual basis due to a number of factors, many of
which are outside our control. Our results of operations may fluctuate due to:

    - the loss of or decrease in sales to a major customer;

    - our failure to attract new customers;

    - the timing and size of orders from, and shipments to, our customers;

    - changes in the average cost of products;

    - changes in the average selling price of products;

    - the timing of the introduction of new or enhanced products; and

    - the timing and size of expenses, including research and development
      expenses.

    Accordingly, you should not rely upon period-to-period comparisons as
indications of future performance. Fluctuations in our operating results may
result in a decline in the price of our stock.

    THE MARKET FOR ADSL INTEGRATED CIRCUIT AND SOFTWARE PRODUCTS IS HIGHLY
COMPETITIVE, AND MANY OF OUR COMPETITORS ARE MORE ESTABLISHED AND HAVE GREATER
RESOURCES THAN WE DO.

    The market for ADSL integrated circuit and software products is highly
competitive. Given our limited operating history in developing products for this
market, we may not have the financial

                                       14
<PAGE>
resources, technical expertise or marketing and support capabilities to compete
successfully. Our principal competitors include Alcatel Microelectronics, Analog
Devices, Inc., Centillium Communications, Inc., Conexant Systems, Inc.,
GlobeSpan, Inc., Lucent Technologies Inc., STMicroelectronics N.V. and Texas
Instruments Incorporated. These competitors have longer operating histories and
presence in key markets, greater name recognition, larger installed customer
bases and significantly greater financial, sales and marketing, manufacturing,
distribution, technical and other resources than we have. They may be able to
introduce new technologies more rapidly, respond more quickly to changing
customer requirements or devote greater resources to the development, promotion
and sale of their products than we can. Further, some of these competitors have
captive manufacturing operations, and in the event of a manufacturing capacity
shortage, these competitors may be able to obtain products when we are unable to
do so. In addition, we anticipate that new competitors will enter this market as
ADSL becomes more widely deployed.

    IF WE FAIL TO ENHANCE OUR EXISTING PRODUCTS OR TO DEVELOP AND INTRODUCE NEW
PRODUCTS THAT MEET CHANGING CUSTOMER REQUIREMENTS AND KEEP PACE WITH
TECHNOLOGICAL DEVELOPMENTS, WE WILL NOT SELL OUR PRODUCTS AND OUR REVENUES WILL
FLUCTUATE OR DECREASE.

    The market for broadband access products is characterized by
rapidly-changing customer requirements and short product life cycles.
Accordingly, our future success will depend in large part upon our ability to:

    - develop and market competitive products that meet our customers' changing
      requirements;

    - develop innovative features that differentiate our products from those of
      our competitors;

    - identify and respond to emerging technological trends;

    - develop products that interoperate with competitors' products;

    - respond effectively to product announcements by others;

    - bring products to market on a timely basis; and

    - introduce products that have competitive prices.

    IF WE CONTINUE TO RAPIDLY EXPAND OUR OPERATIONS AND IF WE FAIL TO MANAGE
GROWTH EFFECTIVELY, OUR BUSINESS COULD BE HARMED.

    We have rapidly expanded our operations, including the number of our
employees and the geographic scope of our activities. We expect that significant
further expansion will be required to address potential growth in our customer
base and market opportunities. If we are unable to manage growth effectively, we
may not be able to take advantage of market opportunities, develop or enhance
our products or our technical capabilities, execute our business plan or
otherwise respond to competitive pressures or unanticipated requirements. To
effectively manage the anticipated growth of our operations, we believe we must
both enhance our operational, financial and management information controls,
reporting systems and procedures and effectively manage multiple relationships
with our customers, suppliers and other third parties.

    We have recently hired many new employees. Failure to properly train and
integrate these new employees into our business may disrupt our operations. We
may also have difficulties successfully identifying and exploiting existing and
potential market opportunities if our staffing is inadequate. In addition, we
have recently hired a number of members of our executive management team. Only
some of these executives have worked together before, and their failure to work
together to effectively manage our company will harm our business.

                                       15
<PAGE>
    OUR REVENUE HAS BEEN AND WILL CONTINUE TO BE DERIVED FROM A LIMITED NUMBER
OF PRODUCTS. IF ANY OF THESE PRODUCTS FAILS TO GAIN BROADER MARKET ACCEPTANCE,
WE MAY NOT BE ABLE TO GENERATE SUFFICIENT REVENUE.

    For the nine months ended September 30, 1999 and for the nine months ended
September 30, 2000, 20.5% and 88.5% of our revenue was derived from sales of our
Apollo Two products. We expect that our Apollo products will continue to
represent a significant portion of our revenue in the foreseeable future.
Therefore, we may not be able to generate sufficient revenue if these products
fail to achieve broader market acceptance.

    BECAUSE OUR PRODUCTS ARE USED AS COMPONENTS OF OUR CUSTOMERS' PRODUCTS, IF
COMMUNICATIONS EQUIPMENT MANUFACTURERS ARE NOT ABLE TO OBTAIN THE OTHER
COMPONENTS USED IN THEIR PRODUCTS, SALES OF OUR PRODUCTS WOULD BE HARMED.

    Our customers incorporate our products into their equipment together with
products from other suppliers. For example, our Apollo turn-key reference
designs require electronic components and integrated circuits manufactured by
other companies. Some of these components may be sole-sourced or in limited
supply. Although alternative suppliers may be available, some of their
components have different attributes and may require a modification to our
customers' equipment. Therefore, if our customers are unable to obtain the other
required components for their equipment, they could cancel or delay purchases of
our products.

    IF UNITED MICROELECTRONICS CORPORATION DOES NOT HAVE SUFFICIENT CAPACITY TO
SATISFY OUR INTEGRATED CIRCUIT REQUIREMENTS, WE COULD EXPERIENCE SUBSTANTIAL
DELAY OR INTERRUPTION IN THE SHIPMENT OF OUR INTEGRATED CIRCUITS OR AN INCREASE
IN COSTS WHICH WOULD NEGATIVELY AFFECT OUR OPERATING RESULTS.

    We do not own or operate a semiconductor fabrication facility and depend on
United Microelectronics Corporation to manufacture all of our integrated
circuits. Most of our products are manufactured at a single facility, which
increases the risk of a disruption in supply. We have executed a term sheet with
United Microelectronics Corporation that states that it guarantees us a minimum
level of production capacity through 2003, provided that we use United
Microelectronics Corporation to manufacture substantially all of our integrated
circuits during this period. Other than this term sheet, we do not have a
long-term silicon wafer supply agreement with United Microelectronics
Corporation that guarantees silicon wafer or product quantities. Furthermore, we
do not have long-term agreements that guarantee silicon wafer prices, delivery
or lead times, as United Microelectronics Corporation manufactures our products
on a purchase order basis. We provide United Microelectronics Corporation with
rolling forecasts of our production requirements; however, the ability of United
Microelectronics Corporation to provide silicon wafers to us is limited by
United Microelectronics Corporation's available capacity. In addition, because
many of United Microelectronics Corporation's customers have greater financial
resources than we do and because many of their customers may have greater
capacity requirements than we do, United Microelectronics Corporation could
choose to prioritize capacity for other customers or reduce or eliminate
deliveries to us on short notice. Accordingly, United Microelectronics
Corporation may not allocate sufficient capacity to satisfy our requirements in
excess of the minimum levels in the term sheet. In addition, the manufacturing
process for our products is highly complex, requiring precise production in a
highly-controlled environment. Changes in the manufacturing processes or the
inadvertent use of defective or contaminated materials in the manufacturing of
our products could harm our silicon wafer supplier's ability to achieve
acceptable manufacturing yields. If our silicon wafer supplier manufactures our
products within its manufacturing specification limits and we do not achieve
acceptable yields as a result of our design, our cost of revenue may increase.
In addition, if our silicon wafer supplier does not manufacture our products

                                       16
<PAGE>
within its manufacturing specification limits, we may have difficulty obtaining
adequate product supplies and product shipments may be delayed. This could
ultimately lead to a loss of sales of our products and harm our business.

    OUR DEPENDENCE UPON THIRD PARTIES TO PACKAGE AND TEST SUBSTANTIALLY ALL OF
OUR PRODUCTS REDUCES OUR CONTROL OF PRODUCT DELIVERY SCHEDULES AND QUALITY
ASSURANCE.

    Because third parties package and test substantially all of our products, we
do not directly control our product delivery schedules and quality assurance.
This lack of control could result in product shortages and defects, which in
turn could increase our packaging and testing costs or delay product delivery.
We do not have long-term contracts with the companies that package and test our
products and we typically procure services from them on a per order basis.
Therefore, we may not be able to obtain these services on acceptable terms, if
at all. If we are required to find and qualify alternative packagers and
testers, we could experience delays in product shipments or a decline in product
quality.

    A MAJORITY OF OUR OUTSOURCED OPERATIONS ARE LOCATED IN TAIWAN, INCREASING
THE RISK THAT A NATURAL DISASTER, LABOR STRIKE, WAR OR POLITICAL UNREST IN THAT
COUNTRY WOULD DISRUPT OUR OPERATIONS.

    A majority of our outsourced operations are located in Taiwan. Events out of
our control such as earthquakes, fires, floods or other natural disasters in
Taiwan or political unrest, war, labor strikes or work stoppages in Taiwan would
disrupt our operations. The risk of earthquakes in Taiwan is significant because
of its proximity to major earthquake fault lines. An earthquake like the one
that occurred in Taiwan in September 1999 could cause significant delays in
shipments of our products until we are able to shift our outsourced operation.
In addition, there is currently significant political tension between Taiwan and
China, which could lead to hostilities. If any of these events occur, we may not
be able to obtain alternative capacity. Failure to secure alternative capacity
could cause a delay in the shipment of our products, which would cause our
revenue to fluctuate or decline.

    WE DERIVE A SUBSTANTIAL AMOUNT OF OUR REVENUE FROM INTERNATIONAL SOURCES,
AND OUR FAILURE TO ADDRESS THE DIFFICULTIES ASSOCIATED WITH SELLING OUR PRODUCTS
OUTSIDE THE UNITED STATES WOULD CAUSE OUR SALES TO DECLINE.

    If we are unable to address difficulties associated with selling our
products outside the United States, such as unexpected changes in regulatory
requirements, longer payment cycles and problems in collecting accounts
receivable and reduced protection for intellectual property rights in foreign
jurisdictions, our sales would decline and our business would be harmed. Many of
these difficulties are outside of our control. A substantial portion of our
revenue is derived from customers located outside the United States. For the
nine months ended September 30, 1999, sales to customers in Asia accounted for
76.1% of our revenue, of which our sales to customers in South Korea constituted
13.96% of this revenue. For the nine months ended September 30, 2000, sales to
customers in Asia accounted for 70.9% of our revenue, of which sales to
customers in South Korea constituted 50.67% of this revenue. We anticipate that
the majority of our revenue will continue to be derived from Asia, especially
South Korea, for the foreseeable future. We do not have any long-term
commitments from our Asian customers and demand for our products in Asia may not
continue to grow. In addition, use of ADSL technology in South Korea, and thus
the demand for our products in South Korea, is related in part to a
government-sponsored initiative encouraging deployment of ADSL. If alternative
superior technologies are developed, support for the initiative may be
withdrawn, or demand from our customers in South Korea may decrease, our
business would be harmed.

                                       17
<PAGE>
    BECAUSE DEVELOPMENT OF NEW PRODUCTS REQUIRES SUBSTANTIAL TIME AND EXPENSE,
WE MAY NOT BE ABLE TO RECOVER OUR DEVELOPMENT COSTS AND ACHIEVE AN ADEQUATE
RETURN ON INVESTMENT.

    The development of new products requires substantial time and expense.
Improvements to existing products or the introduction of new products by us or
our competitors may replace or provide lower cost alternatives to our existing
products or render these products obsolete, unmarketable or inoperable.
Therefore, we may not be able to recover the costs of the development of our
products and achieve an adequate return on investment.

    For example, we believe that our next-generation scalable ADSL modem, or SAM
Two, products will form the basis of a future family of ADSL integrated circuit
and software solutions. We have not yet completed development of these products.

    Even if we complete development on a timely basis, these products may not
achieve market acceptance and generate significant revenue. If our SAM Two
products do not achieve broad market acceptance, revenue from our existing
products could be inadequate to cover our expenses and our operating results and
reputation could be damaged.

    BECAUSE THE LENGTHY SALES CYCLE OF OUR PRODUCTS MAKES IT DIFFICULT TO
ACCURATELY PREDICT ACTUAL PRODUCT DEMAND, THE VOLUME OF PRODUCT SHIPPED MAY NOT
CORRESPOND WITH OUR PRODUCT FORECASTS. THEREFORE, WE MAY NOT BE ABLE TO RECOUP
EXPENSES INCURRED IN ANTICIPATION OF SALES OF OUR PRODUCTS.

    The sales cycle of our products is lengthy and typically involves a detailed
initial technical evaluation of our products by our prospective customers,
followed by the design, manufacturing, testing and qualification of prototypes
incorporating our products. This process generally takes from three to six
months, and may last longer. Our customer purchase agreements generally contain
no minimum purchase requirements and customers typically purchase our products
pursuant to short-term purchase orders that may be canceled without charge.
Given this lengthy sales cycle, it is difficult to accurately predict when and
in what volume sales to a particular customer will occur, if at all.

    Therefore, product revenue may not be commensurate with the level of
expenses that we incur preparing for anticipated sales. If our forecasts prove
to be inaccurate, our operating results could be harmed. For example, if we
purchase excess inventory, write-downs or write-offs could result. Conversely,
if we fail to purchase a sufficient supply of some products, revenue
opportunities could be lost and our customer relationships could be harmed.

    BECAUSE PRICE COMPETITION, MATURING TECHNOLOGIES AND VOLUME PURCHASES BY
LARGE CUSTOMERS MAY RESULT IN A DECREASE IN THE AVERAGE SELLING PRICE OF OUR
PRODUCTS, THE GROSS MARGINS FOR OUR PRODUCTS MAY DECLINE.

    Price competition may harm the gross margins of our products. Furthermore,
we anticipate that average selling prices of ADSL integrated circuits will
continue to decline as product technologies mature. Many of our competitors are
larger institutions with greater resources. Therefore these competitors may be
able to achieve greater economies of scale and may be less vulnerable to price
competition. In addition, we expect that the average selling prices of our
products will decrease in the future due to the volume discounts that are
provided to our large customers. The decline in average selling prices will
generally lead to a commensurate decline in our gross margins for these products
unless manufacturing costs can be reduced at the same or greater rates.

                                       18
<PAGE>
    DELAY IN THE DEVELOPMENT OF RETAIL AND PERSONAL COMPUTER ORIGINAL EQUIPMENT
MANUFACTURER SALES CHANNELS FOR ADSL MODEM DISTRIBUTION COULD LIMIT OUR SALES.

    Our sales growth will depend in part on the development of retail and
personal computer original equipment manufacturer sales channels. Today, most
telecommunication service providers only support ADSL modems which they provide
directly to their subscribers. We believe that telecommunication service
providers will eventually support ADSL modems purchased as a part of a personal
computer, an Internet access device or separately by subscribers. Any
significant delay in development of these channels, as opposed to alternative
distribution channels, could limit sales of our products.

    IF WE LOSE RIGHTS UNDER OUR AGREEMENT WITH UNITED MICROELECTRONICS
CORPORATION, UNDER WHICH WE WERE EXTENDED CERTAIN LICENSES GRANTED BY THIRD
PARTIES TO UNITED MICROELECTRONICS CORPORATION, WE WOULD LOSE A COMPETITIVE
ADVANTAGE AND OUR BUSINESS WOULD BE HARMED.

    In August 1999, we entered into an agreement with United Microelectronics
Corporation under which we were extended certain licenses granted by Texas
Instruments to United Microelectronics Corporation in exchange for royalties,
patent cross licenses and other obligations. This agreement grants us access to
certain technology on favorable terms. If United Microelectronics Corporation
ceases to be our largest stockholder, we would lose rights under this agreement
and consequently we would lose a competitive advantage in the manufacture of our
products. If we lose these rights, we may not be able to secure such licenses on
reasonable terms, if at all.

    THE MEASURES ON WHICH WE RELY TO PROTECT OUR INTELLECTUAL PROPERTY RIGHTS
AFFORD ONLY LIMITED PROTECTIONS.

    We rely on a combination of copyright, patent, trademark, trade secret and
other intellectual property laws, non-disclosure agreements and other measures
to protect our intellectual property. These measures afford only limited
protection, and we cannot be certain that these measures will adequately protect
our intellectual property. Despite our efforts to protect our intellectual
property both under the laws of the United States and under the laws of foreign
countries, unauthorized parties may copy aspects of our products or obtain and
use trade secrets or other information that we regard as proprietary. Our
competitors may also independently develop the same or similar technologies
without violating our intellectual property rights.

    BECAUSE OUR INDUSTRY IS CHARACTERIZED BY FREQUENT LITIGATION OVER
INTELLECTUAL PROPERTY RIGHTS, WE MAY BE REQUIRED TO INCUR SUBSTANTIAL EXPENSES
AND DIVERT MANAGEMENT ATTENTION AND RESOURCES IN DEFENDING INTELLECTUAL PROPERTY
LITIGATION AGAINST US.

    The industry in which we compete is characterized by numerous allegations of
and lawsuits involving infringement of intellectual property rights. An
infringement claim could be asserted against us in the future. The defense of
any such claim, regardless of its merit, could result in our incurring
substantial expenses and diverting significant management attention and other
resources away from our operations. In the event of an adverse result in any
future litigation or claim, we may be required to:

    - pay substantial damages, including treble damages, if we are found to have
      willfully infringed the intellectual property of another;

    - halt the manufacture, sale and use of infringing products or technology;

    - obtain licenses to the infringing technology, which may not be available
      on commercially reasonable terms, or at all; or

    - expend significant resources to develop non-infringing technology.

                                       19
<PAGE>
    WE MAY INCUR SUBSTANTIAL EXPENSES AND DIVERT MANAGEMENT RESOURCES IN
PROSECUTING OTHERS FOR THEIR UNAUTHORIZED USE OF OUR INTELLECTUAL PROPERTY
RIGHTS.

    The markets in which we compete are characterized by frequent litigation
regarding patents and other intellectual property rights. We are aware of a
significant number of patents and patent applications relating to aspects of our
technologies filed by, and issued to, third parties. Should any of our
competitors file patent applications or obtain patents that claim inventions
also claimed by us, we may choose to participate in an interference proceeding
to determine the right to a patent for these inventions because if we fail to
enforce and protect our intellectual property rights, our business would be
harmed. Even if the outcome is favorable this proceeding could result in
substantial cost to us and disrupt our business.

    WE DEPEND ON A LIMITED NUMBER OF CUSTOMERS, AND THE LOSS OF, OR A
SIGNIFICANT REDUCTION IN ORDERS FROM, ANY OF THEM COULD HARM OUR OPERATING
RESULTS.

    If we are not successful in maintaining relationships with our customers and
obtaining new customers, our business and results of operations will suffer. We
sell our products primarily to communications equipment manufacturers. For the
nine months ended September 30, 1999, sales to no customer accounted for more
than 10% of our revenue. For the nine months ended September 30, 2000, sales to
one customer accounted for 19.8% of our revenue.

    Other than Alcatel Bell N.V., we do not have long-term agreements with these
customers relating to the sale of our products, but rather sell our products to
them on an order-by-order basis. We expect to continue to be dependent upon a
relatively small number of customers for a substantial portion of our revenue.

    IF WE BECOME SUBJECT TO PRODUCT RETURNS AND PRODUCT LIABILITY CLAIMS
RESULTING FROM DEFECTS IN OUR PRODUCTS, WE MAY FAIL TO ACHIEVE MARKET ACCEPTANCE
OF OUR PRODUCTS AND OUR BUSINESS COULD BE HARMED.

    We develop complex products in an evolving marketplace. Despite testing by
us and our customers, software or hardware defects may be found in existing or
new products. These defects could result in a delay in recognition or loss of
revenue, loss of market share or failure to achieve market acceptance.
Additionally, these defects could result in financial or other damages to our
customers, cause us to incur significant warranty, support and repair costs and
divert the attention of our engineering personnel from our product development
efforts. In such circumstances, our customers could also seek and obtain damages
from us for their losses. A product liability claim brought against us, even if
unsuccessful, would likely be time consuming and costly to defend.

    WE MAY FAIL TO ATTRACT OR RETAIN KEY PERSONNEL.

    Our success depends to a significant degree upon the continued contributions
of our executive management team and our technical, product development,
marketing, sales and customer support personnel. The loss of key persons in
those areas could harm our business. Competition for these people is
particularly intense in Northern California and Taiwan, where we primarily
operate. Furthermore, we do not have any life insurance or other insurance
covering the loss of any of our key employees.

RISKS RELATING TO OUR INDUSTRY

    IF THE ADSL TECHNOLOGY UPON WHICH OUR PRODUCTS ARE BASED DOES NOT ACHIEVE
BROAD MARKET ACCEPTANCE, WE WOULD NOT BE ABLE TO SUSTAIN OR GROW OUR BUSINESS.

                                       20
<PAGE>
    ADSL services compete with many different broadband access technologies
including variants of digital subscriber line, or DSL, and other alternatives.
The introduction of new products or technologies by competitors or market
acceptance of products based on alternative technologies could render our
products less competitive or obsolete. If either of these events occurs, we
would be unable to sustain or grow our business. Competing technologies include:

    - other variants of DSL, including high bit rate DSL, integrated DSL,
      symmetrical DSL and very high bit rate DSL;

    - other access solutions provided by telecommunications service providers
      such as transmission through initiation of a temporary Internet connection
      over an analog modem, integrated services digital networks and high
      capacity telephone line services;

    - broadband cable technologies;

    - broadband wireless technologies; and

    - broadband satellite technologies.

    If these alternative technologies gain market share at the expense of ADSL,
demand for our products would decrease, and we would be unable to sustain or
grow our business.

    CHANGES IN CURRENT OR FUTURE LAWS OR REGULATIONS, BOTH IN THE U.S. AND
INTERNATIONALLY, COULD CAUSE SALES OF DIGITAL SUBSCRIBER LINE, AND SPECIFICALLY
ADSL, PRODUCTS TO DECLINE OR FAIL TO GROW AS ANTICIPATED.

    The jurisdiction of the Federal Communications Commission extends to the
entire U.S. communications industry, including our customers and their products
and services that incorporate our products. Future Federal Communications
Commission regulations affecting the U.S. communications services industry, our
customers or our products may harm our business. For example, Federal
Communications Commission regulatory policies that affect the availability of
data and Internet services may impede our customers' penetration into some
markets or affect the prices that they can charge. The Federal Communications
Commission has, from time to time, considered new policies affecting Internet
services. This may cause sales of our products to decline. We face similar risks
from foreign regulatory agencies. Any delays in our ability to comply with
domestic and foreign regulatory requirements may result in order cancellations
or postponements of product purchases by our customers, which would harm our
business.

    OUR STOCK MAY BE THINLY TRADED OR ITS PRICE VOLATILE, WHICH MIGHT MAKE IT
DIFFICULT FOR INVESTORS TO SELL THEIR SHARES.

    The stock markets, and in particular the Nasdaq National Market, experience
extreme price and volume fluctuations affecting the market prices of equity
securities of many technology companies. These fluctuations are often unrelated
to the operating performance of the respective companies. We expect that the
market price of our common stock will fluctuate due to the factors described
throughout this "Risk Factor" section as well as:

    - changes in estimates of our financial performance or changes in
      recommendations by securities analysts; and

    - changes in market valuations of other integrated circuit companies.

    BECAUSE OF LIKELY FLUCTUATIONS IN THE PRICE OF OUR STOCK, WE MAY BE SUBJECT
TO CLASS ACTION LITIGATION, WHICH COULD DISTRACT MANAGEMENT AND RESULT IN
SUBSTANTIAL COSTS.

    In the past, securities class action litigation has often been brought
against companies following periods of volatility in the market price of their
securities. We may be the target of similar litigation in

                                       21
<PAGE>
the future. Securities litigation could result in substantial costs and divert
management's attention and resources from our operations and sales of our
products, which would have a negative impact on our business.

    THE LARGE NUMBER OF SHARES ELIGIBLE FOR PUBLIC SALE COULD CAUSE OUR STOCK
PRICE TO DECLINE.

    If our stockholders sell substantial amounts of our common stock, including
shares issued upon the exercise of outstanding options, in the public market,
the market price of our common stock could decline. These sales might make it
more difficult for us to sell equity or equity securities in the future at a
time and price that we deem appropriate. In addition, upon the expiration of
lock-up agreements on February 14, 2001, the 181st day after completion of our
initial public offering, 36,094,033 shares of common stock held by existing
stockholders may be sold in the public market if they are registered under the
Securities Act of 1933 or if they qualify for an exemption from registration.
Lehman Brothers may, at its discretion and without notice, release existing
stockholders from these lock-up agreements. These releases could involve the
release of a specified percentage of all shares subject to lock-up agreements or
the release of an individual's shares for liquidity concerns that apply only to
that individual. Other conditions that could lead to a lock-up release include
an increase in our share price and market demand for shares of our common stock.

    SOME PROVISIONS OF OUR CHARTER DOCUMENTS MAY MAKE ACQUIRING CONTROL OF OUR
COMPANY MORE DIFFICULT FOR A THIRD PARTY, WHICH COULD HARM OUR STOCK'S MARKET
PRICE OR REDUCE ANY PREMIUM OVER MARKET PRICE THAT AN ACQUIROR MIGHT OTHERWISE
PAY.

    Our charter documents contain provisions providing for a classified board of
directors, eliminating cumulative voting in the election of directors and
restricting our stockholders from acting without a meeting. These provisions may
make certain corporate actions more difficult and might delay or prevent a
change in control and therefore limit the price that new investors will pay for
our stock. We will also indemnify officers and directors against losses incurred
in legal proceedings to the broadest extent permitted by Delaware law.

    BECAUSE OUR PRINCIPAL STOCKHOLDERS AND MANAGEMENT MAY BE ABLE TO CONTROL
STOCKHOLDER VOTES, THE PREMIUM OVER MARKET PRICE THAT AN ACQUIROR MIGHT
OTHERWISE PAY MAY BE REDUCED AND ANY MERGER OR TAKEOVER MAY BE DELAYED.

    Our principal stockholders, executive officers, directors and their
affiliates own or control approximately 48% of our common stock. Accordingly,
our principal stockholders, executive officers, directors and their affiliates,
as a group, may have the ability to control the election of a majority of the
members of our board of directors and the outcome of corporate actions requiring
stockholder approval. This concentration of ownership may have the effect of
delaying, deferring or preventing a change in control of us, or may impede a
merger, consolidation, takeover or other business combination involving us. This
concentration of ownership could also adversely affect our stock's market price
or lessen any premium over market price that an acquiror might otherwise pay.

    WE MAY NEED TO RAISE ADDITIONAL CAPITAL IN THE FUTURE, AND IF WE ARE UNABLE
TO SECURE ADEQUATE FUNDS ON TERMS ACCEPTABLE TO US, WE MAY BE UNABLE TO EXECUTE
OUR BUSINESS PLAN.

    If our existing cash balances and cash flows expected from future
operations, are not sufficient to meet our liquidity needs, we will need to
raise additional funds. If adequate funds are not available on acceptable terms
or at all, we may not be able to take advantage of market opportunities, develop
or enhance new products, pursue acquisitions that would complement our existing
product offerings or

                                       22
<PAGE>
enhance our technical capabilities, execute our business plan or otherwise
respond to competitive pressures or unanticipated requirements.

ITEM 3. QUALITATIVE AND QUANTITATIVE DISCLOSURES ABOUT MARKET RISK

    The primary objective of our investment activities is to preserve principal
while concurrently maximizing the income we receive from our investments without
significantly increasing risk. Some of the securities that we may invest in may
be subject to market risk. This means that a change in prevailing interest rates
may cause the principal amount of the investment to fluctuate. For example, if
we hold a security that was issued with a fixed interest rate at the
then-prevailing rate and the prevailing interest rate later rises, the current
value of the principal amount of our investment will decline. To minimize this
risk in the future, we intend to maintain our portfolio of cash equivalents and
short-term investments in a variety of securities, including commercial paper,
money market funds, government and non-government debt securities and
certificates of deposit. In general, money market funds are not subject to
market risk because the interest paid on such funds fluctuates with the
prevailing interest rate. As of September 30, 2000, all of our investments were
in money market funds, bank checking or savings accounts, or bank certificates
of deposit. A hypothetical 100 basis point increase in interest rates would
result in no decrease in the fair value of our available-for-sale securities as
of September 30, 2000.

                                       23
<PAGE>
OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

    None.

ITEM 2. CHANGES IN SECURITIES AND USE OF PROCEEDS

    On August 23, 2000, we completed an initial public offering of shares of our
common stock, $0.001 par value. The managing underwriters in the offering were
Lehman Brothers, Bear, Stearns & Co Inc., Wit SoundView and Fidelity Capital
Markets. The shares of common stock sold in the offering were registered under
the Securities Act of 1933, as amended, on a Registration Statement on Form S-1
(No. 333-39128). The Securities and Exchange Commission declared the
Registration Statement effective on August 17, 2000. We sold 6,440,000 shares of
common stock at $18.00 per share, including 840,0000 shares sold pursuant to the
exercise of the underwriters' over-allotment option. The sale of the shares of
common stock generated aggregate proceeds of approximately $115.9 million. We
received aggregate net proceeds of approximately $106.1 million after deducting
underwriting discounts and commissions of approximately $8.1 million and
expenses of the offering of approximately 1.7 million.

    Concurrent with our initial public offering, 166,667 shares of common stock
were sold to NEC Corporation in a private placement pursuant to the exemption
provided by Section 4(2) of the Securities Act of 1933. These shares were sold
at $18.00 per share resulting in net proceeds to the company of approximately
$3.0 million.

    Proceeds from our initial public offering and the concurrent private
placement have been used for working capital and general corporate purposes,
including research and development of new products, sales and marketing efforts
and general and administrative expenses. The remaining net proceeds have been
invested in cash, cash equivalents and short-term investments. The use of the
proceeds from the offering does not represent a material change in the use of
proceeds described in the prospectus.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

    None.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

    On August 3, 2000, we submitted several matters to our stockholders for
action by written consent. The following is a brief description of the matters
voted upon and a statement of the number of votes cast for, against or withheld,
as to each such matter:

1)  To approve the amendment and restatement of our Certificate of Incorporation
    to be effective upon the closing of our initial public offering.

<TABLE>
<S>                    <C>                       <C>                     <C>
Common Stock:          FOR: 19,819,620           AGAINST: 0              WITHHELD: 4,806,946
Preferred Stock:       FOR: 8,168,821            AGAINST: 0              WITHHELD: 3,529,750
</TABLE>

2)  To approve an amendment and restatement of our Bylaws to be effective upon
    the closing of our initial public offering.

<TABLE>
<S>                    <C>                       <C>                     <C>
Common Stock:          FOR: 19,819,620           AGAINST: 0              WITHHELD: 4,806,946
Preferred Stock:       FOR: 8,168,821            AGAINST: 0              WITHHELD: 3,529,750
</TABLE>

                                       24
<PAGE>
3)  To approve indemnification agreements that we entered into with each of our
    officers and directors.

<TABLE>
<S>                    <C>                       <C>                     <C>
Common Stock:          FOR: 19,819,620           AGAINST: 0              WITHHELD: 4,806,946
Preferred Stock:       FOR: 8,168,821            AGAINST: 0              WITHHELD: 3,529,750
</TABLE>

4)  To approve and adopt the 2000 Stock Plan.

<TABLE>
<S>                    <C>                       <C>                     <C>
Common Stock:          FOR: 19,819,62            AGAINST: 0              WITHHELD: 4,806,946
Preferred Stock:       FOR: 8,168,821            AGAINST: 0              WITHHELD: 3,529,750
</TABLE>

5)  To approve and adopt the 2000 Employee Stock Purchase Plan.

<TABLE>
<S>                    <C>                       <C>                     <C>
Common Stock:          FOR: 19,819,620           AGAINST: 0              WITHHELD: 4,806,946
Preferred Stock:       FOR: 8,168,821            AGAINST: 0              WITHHELD: 3,529,750
</TABLE>

ITEM 5. OTHER INFORMATION

    None.

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

    A.  Exhibits

        10.1  Lease Agreement between Granum Holdings, a California Limited
              Partnership and Integrated Telecom Express, Inc. a Delaware
              Corporation, dated September 21, 2000.

        27.1  Financial Data Schedule

    B.  Reports on Form 8-K:

        None.

                                       25
<PAGE>
                                   SIGNATURES

    Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

<TABLE>
<S>                                                    <C>  <C>
                                                       INTEGRATED TELECOM EXPRESS, INC.

Date: November 14, 2000                                By:            /s/ TIMOTHY A. ROGERS
                                                            ----------------------------------------
                                                                        Timothy A. Rogers
                                                                     CHIEF FINANCIAL OFFICER
                                                               (PRINCIPAL FINANCIAL AND ACCOUNTING
                                                                            OFFICER)
</TABLE>

                                       26