Document:

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                                                                   Exhibit 10.13

CATC                   Dennis Evans Employment Agreement

                             EMPLOYMENT AGREEMENT

Computer Access Technology Corporation, a corporation, (hereinafter known as
"CATC"), having its principal place of business at 2403 Walsh Avenue, Santa
Clara, California 95051-1302, is hiring Mr. Dennis W. Evans, whose social
security number is ###-##-#### (hereinafter referred to as "Employee"), located
at 17462 Belletto Drive, Morgan Hill, CA 95037, as a full time employee under
the following conditions:

1.   JOB DESCRIPTION

As a key member of CATC's top management team, Employee shall perform all
business functions required by CATC, including but not limited to:

 .    Develop and execute CATC's financial strategy, providing advice and
     guidance on all financial matters.

 .    Implement financial plans, budgets and controls for the company.

 .    Oversee all business performance reporting, business decision analysis,
     profit planning, accounting policies, financial reporting systems, as well
     as tax and treasury matters, budgeting, forecasting, and audit.

 .    As company pursues an IPO, coordinate banking relationships and investor
     relations activities including road shows and conferences, internal and
     external (including statutory) reporting, and asset allocation planning.
     Manage Wall Street investors and analysts, communicating CATC's vision and
     strategy.

 .    In addition to carefully analyzing the industry and company cost structures
     to identify and correct inefficiencies, Employee will ensure that
     resources, direction, and internal controls exist throughout the company to
     achieve timely and accurate reporting of all financial and administrative
     matters.

 .    At a later stage, may be responsible for coordinating financial and
     integration aspects of any strategic acquisitions.

 .    Negotiate necessary lines of credit, equipment leasing and other required
     financing.

 .    Manage cash and investment portfolio against budgets, forecasts and cash
     flow requirements.

 .    Drive negotiation strategy and tactics with major suppliers, vendors and
     contractors.

 .    Manages general administration and human resources.

 .    Ensures compliance with applicable regulations or regulatory agencies, such
     as generally accepted accounting principles (GAAP) and Securities Exchange
     Commission (SEC) regulations where appropriate.

 .    Maintain stock issuance, options and ensure company compliance.

                               - CONFIDENTIAL -

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CATC                   Dennis Evans Employment Agreement

2.   COMPENSATION

2.1. Salary:

Employee is paid a monthly salary starting at $14,583.33 ($175,000 per year) and
is exempt from overtime pay. CATC's pay-day is the last day of the month.

2.2. Bonus:

CATC will offer Employee a Sign-on Bonus in the amount of $15,000 to be paid to
Employee within 30 days of Start Date. This Sign-on Bonus is contingent on
Employee's continuing employment with CATC and is subject to the following terms
and conditions:

     The Sign-on Bonus will accrue to Employee on a pro-rata basis at the rate
     of 1/12th of $15,000 ($1,250) per month over the first 12 months of your
     employment with CATC. Should your employment be terminated voluntarily by
     you, or by CATC for cause, before the end of the 12 months term, the
     remaining unaccrued balance will be due and payable to CATC by your last
     day of employment.

Within the first 30 days of employment, CATC's management and Employee will
jointly define a set of goals and objectives for the Employee for the first 6
months of employment. Upon successfully reaching these goals CATC will pay
Employee an achievement bonus of $25,000.

In addition, CATC may periodically pay Employee achievement bonuses based on the
company financial performances and on Employee's meeting certain objectives as
defined by CATC's management.

2.3. Performance Reviews:

Employee will have two performance-reviews per year (every 6 months). Changes in
the compensation package will be determined by CATC's management once a year and
will be related to Employee's job performance and to the company revenues and
profits.

3.   BENEFITS

3.1. Stock Option:

When joining the company, Employee will have an option to purchase 150,000 of
CATC's common shares in accordance with CATC's Stock Option plan, subject to
CATC Board of Directors' approval. Additional shares may be granted as part of
the performance review process.

3.2. Health Care:

Medical, Dental, Vision, Life and LTD insurance plans are fully paid by CATC for
Employee and dependents

3.3. Pension Plan:

CATC offers its employees a 401K retirement saving plan. The company provides
matching contributions to the plan at the discretion of its Board of Directors.

3.4. Time Off:

CATC recognizes the need for employees to enjoy time away from work to relax and
pursue personal activities. Employee is entitled to the following time off:

                                - CONFIDENTIAL -

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CATC                   Dennis Evans Employment Agreement

 .    16 days paid PET (Personal Excused Time) for the first year of service
     (1.33 days per month accrual). One additional day per year of service up to
     maximum of 26 days per year.

 .    Paid Holidays for all Holidays that CATC's offices are closed.

Employee should schedule his time off with his supervisor, providing reasonable
notice so that both company and personal needs can be met.

4.   EXPENSES

CATC shall reimburse Employee for actual travel expenses incurred while in a
travel status authorized in writing by CATC for reasonable amounts. Said
reimbursement to cover all proper expenses including motel bills, meals, and;

     (1)  Either the cost of transportation by common carriers; or

     (2)  A per-mile amount (following Government regulations) when Employee's
          automobile is used; and

     (3)  Other incidental expenses

5.   INVENTIONS, PATENT RIGHTS AND COPYRIGHTS

(a) Employee agrees that he will communicate to CATC's management all inventions
made or conceived by him in connection with the performance of the work
contemplated by this Agreement and that he will, without further consideration,
assign all right, title and interest in such inventions to CATC and will assist
CATC and its nominees in every proper way (entirely at CATC expense) to obtain
for its own benefit patents for such inventions in any and all countries, the
invention to be and remain the property of CATC and its nominees, whether
patented or not.

(b) Inventions referred to in the above paragraph means any invention,
improvement, or discovery (whether or not patentable) conceived or actually
reduced to practice either in the performance of the experimental,
developmental, or research work contemplated by this Agreement.

(c) Employee agrees that all writings produced by Employee under this contract
shall be the sole property of CATC and CATC shall have the exclusive right to
copyright such writings in any country or countries.

6.   CATC'S TRADE SECRETS

Employee agrees he will not, either during or subsequent to the term of this
Agreement, directly or indirectly, divulge to unauthorized persons any secret or
confidential know-how or other information acquired through his association with
CATC, including work in connection with any contract for any department of the
United States Government or other customer, and not known to the industry or
recognized as standard practice, whether acquired or developed by him during the
term of this Agreement or obtained from other employees; and that he will not,
either during or subsequent to the term of this Agreement, directly or
indirectly, publish or disclose to any third party any such information without
written authorization from CATC to do so, nor will he use such information apart
from CATC's business without the approval of CATC.

                                - CONFIDENTIAL -

<PAGE>

CATC                   Dennis Evans Employment Agreement

7.   TRADE SECRETS OF OTHERS

Employee represents that his performance of all of the terms of this Agreement
and as a Employee to CATC does not and will not breach any agreement to keep in
confidence proprietary information, knowledge or data acquired by him in
confidence or in trust prior to his execution of this Agreement with CATC, and
he will not disclose to CATC, or induce CATC to use, any confidential or
proprietary information or material belonging to any previous employer or
others. Employee agrees not to enter into any agreement either written or oral
in conflict herewith.

8.   EMPLOYMENT TERMS

8.1. At-will Employment

The Company and Employee acknowledge that Employee's employment will be at-will,
as defined under applicable law. If Employee's employment terminates for any
reason, including (without limitation) any termination prior to a Change of
Control, Employee shall not be entitled to any payments, benefits, damages,
awards or compensation other than as provided by this Agreement, or as may
otherwise be available in accordance with the Company's established employee
plans and practices or pursuant to other agreements with the Company.

8.2. Severance Benefits

     (a) Termination. If Employee's employment terminates (i) at any time after
a waiting period of twelve (12) months from Start Date, or (ii) if Employee's
employment terminates at any time within twelve (12) months following a Change
of Control, then Employee shall be entitled to receive the following severance
benefits:

          (i) Termination other than for Cause; Good Reason. If Employee's
employment is terminated by the Company other than for Cause or if Employee
terminates his employment due to a Good Reason, then Employee shall be entitled
to receive severance pay from the Company in an amount equal to Employee's base
salary for the six calendar month period immediately preceding the Termination
Date. Any severance payment to which Employee is entitled pursuant to this
Section shall be paid by the Company to Employee in cash and in full not later
than thirty (30) calendar days following the Termination Date.

          (A)Procedures. In the event Employee believes that the Company has
taken an action that constitutes Good Reason as defined in Section 9. (d),
Employee shall give written notice to the Company in writing setting forth the
basis for such belief. The Company shall have 30 days in which to take action
restoring Employee to the position he was in prior to the Company taking the
action that constituted Good Reason. If the Company takes such action, Employee
shall not thereafter have the right to terminate employment for Good Reason on
account of the actions previously taken by Employee. If Employee fails to notify
the Company within 30 days of the events that constitute Good Reason, Employee
shall not thereafter have the right to terminate his employment for Good Reason
based on those events.

          (ii) Voluntary Resignation; Termination for Cause. If Employee's
employment terminates by reason of Employee's voluntary resignation (and not for
Good Reason), or if Employee is terminated for Cause, then Employee shall not be
entitled to receive severance or other benefits except for those (if any) as may
then be established under the Company's then

                                - CONFIDENTIAL -

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CATC                   Dennis Evans Employment Agreement

existing severance and benefits plans and practices or pursuant to other
agreements with the Company.

          (iii) Disability; Death. If the Company terminates Employee's
employment as a result of Employee's Disability, or such Employee's employment
is terminated due to the death of Employee, then Employee shall not be entitled
to receive severance or other benefits except for those (if any) as may then be
established under the Company's then existing severance and benefits plans and
practices or pursuant to other agreements with the Company.

     (b) Other Termination. In the event Employee's employment is terminated for
any reason, (i) prior to the termination of the twelve (12) months waiting
period from Start Date or (ii) prior to the occurrence of a Change of Control or
(iii) after the twelve (12) months period following a Change of Control, then
Employee shall be entitled to receive severance and any other benefits only as
may then be established under the Company's existing severance and benefits
plans and practices or pursuant to other agreements with the Company.

9.   DEFINITION OF TERMS

The following terms referred to in this Agreement shall have the following
meanings:

     (a) Cause. For purposes of this Agreement, the term "Cause" is defined as
any one or more of the following occurrences:

          (i) Employee's continued failure to perform his duties and
responsibilities commensurate with the scope and stature of Employee's position
in good faith and to the best of his ability for a period of 30 days after
written notice thereof from the Company to Employee; or

          (ii) Employee's conviction by, or entry of a plea of guilty or nolo
contendere in, a court of competent and final jurisdiction for any crime which
constitutes a felony in the jurisdiction involved; or

          (iii) Employee's commission of an act of fraud or misappropriation of
funds, whether prior or subsequent to the date hereof, upon the Company; or

          (iv) Employee's breach of a material provision of this Agreement or
Employee's Confidential Information and Invention Assignment Agreement with the
Company; or

          (v) Gross negligence by Employee in the scope of his services to the
Company; or

          (vi) Employee's commencement of employment (as an employee or a
consultant) with another employer while he is an employee of the Company,
without the prior written consent of the Company; or

          (vii) Material nonconformance with the Company's standard business
practices and policies generally, including but not limited to policies against
racial or sexual discrimination or harassment, delivered in writing to Employee.

     (b) Change of Control. "Change of Control" means the occurrence of any of
the following events:

     (i) Any "person" (as such term is used in Sections 13(d) and 14(d) of the
Securities Exchange Act of 1934, as amended) other than Dan Wilnai, Peretz
Tzarnotzky or Philips Semiconductors (or any affiliate of any such person) is or
becomes the "beneficial owner" (as

                                - CONFIDENTIAL -

<PAGE>

CATC                     Dennis Evans Employment Agreement

defined in Rule 13d-3 under said Act), directly or indirectly, of securities of
the Company representing 75% or more of the total voting power represented by
the Company's then outstanding voting securities; or

          (ii) The shareholders of the Company approve a merger or consolidation
of the Company with any other corporation, other than a merger or consolidation
which would result in the voting securities of the Company outstanding
immediately prior thereto continuing to represent (either by remaining
outstanding or by being converted into voting securities of the surviving
entity) at least fifty percent (50%) of the total voting power represented by
the voting securities of the Company, such surviving entity or the entity that
controls such surviving entity outstanding immediately after such merger or
consolidation, or the stockholders of the Company approve a plan of complete
liquidation of the Company or an agreement for the sale or disposition by the
Company of all or substantially all the Company's assets.

     (c) Disability. "Disability" shall mean that Employee has been unable to
perform his Company duties as the result of his incapacity due to physical or
mental illness, and such inability, at least 26 weeks after its commencement, is
determined to be total and permanent by a physician selected by the Company or
its insurers and acceptable to Employee or Employee's legal representative (such
Agreement as to acceptability not to be unreasonably withheld). Termination
resulting from Disability may only be effected after at least 30 days' written
notice by the Company of its intention to terminate Employee's employment. In
the event that Employee resumes the performance of substantially all of his
duties hereunder before the termination of his employment becomes effective, the
notice of intent to terminate shall automatically be deemed to have been
revoked.

     (d) Good Reason. "Good Reason" shall mean (i) without Employee's express
written consent, the significant reduction of Employee's duties, authority or
responsibilities, relative to Employee's duties, authority or responsibilities
as in effect immediately prior to such reduction, or the assignment to Employee
of such reduced duties, authority or responsibilities; (ii) a reduction by the
Company in the base salary of Employee as in effect immediately prior to such
reduction, unless such reduction is caused by Company's general business
conditions; or (iii) the relocation of Employee to a facility or a location more
than sixty (60) miles from Employee's then present location, without Employee's
express written consent.

     (e) Termination Date. "Termination Date" shall mean (i) if Employee's
employment is terminated by the Company for Disability, thirty (30) days after
notice of termination is given to Employee (provided that Employee shall not
have returned to the performance of Employee's duties on a full-time basis
during such thirty (30)-day period), (ii) if Employee's employment is terminated
by the Company for any other reason, the date on which a notice of termination
is given; provided, however, that if within thirty (30) days after the Company
gives Employee notice of termination, Employee notifies the Company that a
dispute exists concerning the termination or the benefits due pursuant to this
Agreement, then the Termination Date shall be the date on which such dispute is
finally determined, either by mutual written agreement of the parties, or a by
final judgment, order or decree of a court of competent jurisdiction (the time
for appeal therefrom having expired and no appeal having been perfected), or
(iii) subject to Section 8.2 (a)(i)(A), if Employee's employment is terminated
by Employee for Good Reason, the date on which Employee delivers the notice of
termination required by such Section to the Company.

                                - CONFIDENTIAL -

<PAGE>

CATC                   Dennis Evans Employment Agreement

10.  MISCELLANEOUS PROVISIONS

     (a) Waiver. No provision of this Agreement shall be modified, waived or
discharged unless the modification, waiver or discharge is agreed to in writing
and signed by Employee and by an authorized officer of the Company (other than
Employee). No waiver by either party of any breach of, or of compliance with,
any condition or provision of this Agreement by the other party shall be
considered a waiver of any other condition or provision or of the same condition
or provision at another time.

     (b) Whole Agreement. No agreements, representations or understandings
(whether oral or written and whether express or implied) which are not expressly
set forth in this Agreement have been made or entered into by either party with
respect to the subject matter hereof.

     (c) Choice of Law. The validity, interpretation, construction and
performance of this Agreement shall be governed by the laws of the State of
California as applied to agreements entered into and performed within California
solely by residents of that state.

     (d) Withholding. All payments made pursuant to this Agreement will be
subject to withholding of applicable income and employment taxes.

11.  EFFECTIVE DATE

This Agreement is effective as of 1 May 2000.

12.  ENTIRE AGREEMENT

This Agreement embodies the entire agreement and understanding which exists
among and between the parties relating to the subject matter. There are no
agreements, representations, warranties or statements with respect to the
subject matter hereof except as expressly set forth herein.

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     Computer Access Techology                               Employee
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Signature /s/ Dan Wilnai, President               Signature: /s/ Dennis W. Wans
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              Dan Wilnai, President               Name Dennis W. Wans
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              1 May 2000                          Date         5/1/00
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                                - CONFIDENTIAL -<PAGE>

                                                                   EXHIBIT 10.14

                        COMMON STOCK PURCHASE AGREEMENT

     This Common Stock Purchase Agreement (the "Agreement") is made effective as
of March 15, 1994, by and among Computer Access Technology Corporation, a
California corporation (the "Company") with its principal office at 3375 Scott
Blvd., Suite 410, Santa Clara, California 95054 and Philips Semiconductors, a
division of Philips Electronics North American Corporation ("Philips"), with its
principal office at 811 East Arques Avenue, Sunnyvale, California 94088-3409.

                                   SECTION 1

     1.1  Authorization. The Company has authorized the sale and issuance of up
          -------------
to 857,141 shares of Common Stock (the "Shares").

     1.2  Sale of the Shares.  Subject to the terms and conditions of this
          ------------------
Agreement, Philips agrees to purchase and the Company agrees to sell and issue
to Philips the Shares at a price per Share of $1,16667 for an aggregate purchase
price of $1,000,000.69 subject to Section 1.3 hereof.

     1.3  Delivery.  On the date hereof (the "Initial Closing Date"), the
          --------
Company will deliver to Philips a certificate or certificates registered in
Philips' name representing 428,571 Shares against payment of the purchase price
therefor of $500,000.93 by check payable to the Company or wire transfer per the
Company's instructions. On June 15, 1994 (the "Second Closing Date"), the
Company will deliver to Philips a certificate or certificates registered in
Philips' name representing 428,570 Shares, against payment of the purchase price
therefor of $499,999.76 by check payable to the Company or wire transfer per the
Company's instructions (such delivery of the balance of certificates and the
payment therefor being known as the "Second Closing"), provided, however, that
neither Philips nor the Company shall have any obligation to consummate the
Second Closing if on the Second Closing Date:

          (a)  the Company is a party to a voluntary or involuntary bankruptcy
     or insolvency proceeding with respect to the Company;

          (b)  Dan Wilnai has ceased to participate actively in the management
     of the Company; or

          (c)  there has been any significant change in the general business
     direction of the Company such that the Company ceases to focus on
     ACCESS.bus market development or ceases to develop ACCESS.bus products.
<PAGE>

                                   SECTION 2

     The Company represents and warrants to Philips, as of the Initial Closing
Date, as follows:

     2.1  Organization and Standing.  The Company is a corporation duly
          -------------------------
organized and validly existing under, and by virtue of, the laws of the State of
California and is in good standing under the laws of such state.  The Company is
duly qualified to do business and is in good standing as a foreign corporation
in each jurisdiction in which the ownership or leasing of properties or the
conduct of its business requires such qualification, except for jurisdictions in
which the failure to so qualify would not have a material adverse effect upon
the Company.

     2.2  Corporation Power.  The Company has all requisite legal and corporate
          -----------------
power and authority to execute and deliver this Agreement, to sell and issue the
Shares hereunder and to carry out and perform its obligations under the terms of
this Agreement.

     2.3  Authorization.  All corporate action on the part of the Company, its
          -------------
directors and officers necessary for the authorization, execution, delivery and
performance of this Agreement, the authorization, sale, issuance and delivery of
the Shares and the performance of all of the Company's obligations hereunder
have been taken prior to the Initial Closing Date.  This Agreement, when
executed and delivered by the Company, shall constitute a valid and binding
obligation of the Company, enforceable in accordance with its terms, subject to
laws of general application relating to bankruptcy, insolvency and the relief of
debtors and rules of law governing specific performance, injunctive relief or
other equitable remedies.  The Shares, when issued in compliance with the
provisions of this Agreement will be validly issued, fully paid and
non-assessable, and will have the rights, preferences and privileges described
in the Company's Articles of Incorporation.

     2.4  Capitalization.  The authorized capital stock of the Company consists
          --------------
of 5,000,000 shares of Common Stock, of which 2,000,000 shares are issued and
outstanding as of the date hereof.  The outstanding shares have been duly
authorized and validly issued, and are fully paid and nonassessable.  There are
no outstanding options, warrants or other rights to purchase any of the
Company's authorized and unissued capital stock.

                                   SECTION 3

     Philips hereby represents and warrants to the Company, effective as of the
Initial Closing Date, as follows:

     3.1  Organization and Standing.  Philips is a corporation duly organized
          -------------------------
and validly existing under, and by virtue of, the laws of the jurisdiction of
its incorporation and is in good standing under the laws of such jurisdiction.

     3.2  Corporate Power.  Philips has all requisite legal and corporate power
          ---------------
and authority to execute and deliver this Agreement, to purchase the Shares
hereunder and to carry out and perform its obligations under the terms of this
Agreement.

                                      -2-
<PAGE>

     3.3  Authorization.  All corporate action on the part of Philips, its
          -------------
directors and officers necessary for the authorization, execution, delivery and
performance of this Agreement, the purchase of the Shares and the performance of
Philips' obligations hereunder have been taken prior to the Initial Closing
Date.  This Agreement, when executed and delivered by Philips, shall constitute
a valid and binding obligation of Philips enforceable in accordance with its
terms, subject to laws of general application relating to bankruptcy, insolvency
and the relief of debtors and rules of law governing specific performance,
injunctive relief or other equitable remedies.

     3.4  Investment Experience.  Philips is an "accredited investor" within the
          ---------------------
meaning of Regulation D prescribed by the Securities and Exchange Commission
pursuant to the Securities Act of 1933, as amended (the "Securities Act").

     3.5  Investment Intent.  Philips is purchasing the Shares for investment
          -----------------
for its own account only and not with a view to, or for resale in connection
with, any "distribution" thereof within the meaning of the Securities Act.
Philips understands that the Shares have not been registered under the
Securities Act or registered or qualified under any state securities law in
reliance on specific exemptions therefrom, which exemptions may depend upon,
among other things, the bona fide nature of Philips' investment intent as
expressed herein.

     3.6  Information Concerning the Company.  Philips is aware of the Company's
          ----------------------------------
business and financial condition and has heretofore received all such
information as Philips has deemed necessary and appropriate to enable Philips to
evaluate the financial risk inherent in making an investment in the Company, and
Philips has received satisfactory answers and information concerning the
business and financial condition of the Company in response to all inquiries in
respect thereof.

                                   SECTION 4

     The Company hereby covenants and agrees as follows:

     4.1  Board Rights: Meetings.
          ----------------------

          (a)  So long as the Company's Board of Directors is comprised of three
     or more directors, Philips shall have the right to designate one such
     director.  In the event that the Company's Board of Directors is comprised
     of four or more directors, Philips shall have the right to elect one
     director as noted in the previous sentence, and one other director must be
     an experienced financial professional recommended by the Company and
     satisfactory to Philips (Philips approval not to be unreasonably withheld).

          (b)  The Board of Directors shall invite a Philips employee (which
     employee may be in addition to the Philips designee described above) to be
     identified by Philips to attend meetings of the Board of Directors solely
     for the purpose of keeping minutes.

                                      -3-
<PAGE>

       (c)   The Board of Directors shall make reasonable efforts to schedule
its meetings at times that the Philips nominee can attend, and in any event
shall give Philips at least 14 days' notice prior to the date of any meeting of
the Board of Directors.

       (d)   The Company's Board of Directors shall meet at least one time
during each calendar quarter.

       (e)   The Company shall deliver to each director, as soon as practical
following the end of each calendar quarter, but in any event not later than
sixty (60) days following the end of such quarter, an unaudited balance sheet
and an unaudited profit or loss statement of the Company for the prior quarter.
The Company shall similarly deliver annual financial reports when available, and
if such reports are audited, shall deliver copies of the audited financial
statements. The Company understands that Philips will treat all information
delivered pursuant to this section 4.1(e) as confidential and not disclose such
information to any third party unless required by law or court order.

4.2    Philips Right of First Refusal. The Company hereby grants to Philips a
       -------------------------------
right of first refusal to purchase Philips' pro rata share (the "Philips
Percentage") of any New Securities (as defined below) which the Company may from
time to time propose to sell and issue at the same price per share (even if the
price is zero) as such shares are offered to any other entity.  The "Philips
Percentage," for purposes of this right of first refusal, is initially the
ratio of the total number of Shares purchased by Philips pursuant to this
Agreement and shall be adjusted as provided herein.  This right of first refusal
shall be subject to the following provisions:

       (a)   "New Securities" shall mean any capital stock of the Company,
whether or not now authorized; provided, however, that the term "New Securities"
shall not include (i) up to 550,000 shares of the Company's Common Stock issued
to employees, consultants, directors and officers of the Company (other than Dan
Wilnai or Peretz Tzarnotzky) pursuant to equity incentive plans and arrangements
approved by the Board of Directors and (ii) securities issued in connection with
any stock split, stock dividend or recapitalization of the Company, and ,
provided further, that the Philips Percentage shall be reduced to adjust for the
dilutive effect of shares of capital stock issued pursuant to subsection (i)
hereof upon the date of issuance thereof. The Philips Percentage shall not be
adjusted upward if the Company repurchases outstanding capital stock or capital
stock is contributed to the Company.

       (b)   In the event that the Company proposes to undertake an issuance of
New Securities, the Company shall give Philips written notice of its intention,
describing the type of New Securities, the price and the general terms upon
which the Company proposes to issue the same. Philips shall have 45 days from
the date of any such notice to agree to purchase any amount of New Securities up
to the Philips Percentage for the price and upon the general terms specified in
the notice by giving written notice to the Company and starting therein the
quantity of New Securities to be purchased.

                                      -4-
<PAGE>

     (c)  To the extent that Philips does not exercise full its right of first
refusal within said 45-day period, the Company shall have 90 days thereafter to
sell the New Securities with respect to which Philips' option was not exercised
at the price and upon the terms specified in the Company's notice.  In the event
the Company has not sold the New Securities, without first offering such
securities to Philips in the manner provided above. To the extent that Philips
does not exercise its right of first refusal granted herein, the Philips
Percentage shall thereafter be adjusted downward to that number calculated by
dividing (i) the number of shares of capital stock of the Company then held by
Philips by (ii) the number of shares of capital stock of the Company outstanding
immediately after the sale of the New Securites.

     (d)  Philips shall receive, within ten days of receipt of its written
request therefor by the Company, a statement as to the current Philips
Percentage and the means of calculating the same.

  4.3 Nondisclosure. The Company agrees that it will not make any announcement
      -------------
to the press or general public of the existence or terms of this agreement
without the prior written consent of Philips unless required by law or court
order.  Notwithstanding the foregoing sentence, the Company and Philips will
cooperate to publish a joint press release regarding this Agreement at an agreed
upon future date.

  4.4 Termination.  The covenants of the Company granted pursuant to this
      -----------
Section 4 shall terminate and be of no further force or effect (a) immediately
prior to the closing of a firmly underwritten public offering of the Company's
capital stock pursuant to a registration statement under the Securities Act with
aggregate proceeds to the Company in excess of $5,000,000 or (b) if the shares
of the Company's Common Stock owned by Philips cease to represent at least 15%
of the outstanding Common Stock of the Company (calculated, with respect to any
outstanding Preferred Stock, on as-if-converted basis) (a "Philips Withdrawal").

                                   SECTION 5

      Philips hereby covenants and agrees as follows:

   5.1 Most Favored Customer Pricing.  Philips agrees to sell to the Company all
       -----------------------------
the microcontroller products the Company reasonably requires for integration
into the Company's products at the lowest price Philips sells each such product
to any of its third-party customers.  In addition, Philips agrees to sell to the
Company microcontroller products for resale without integration into the
Company's products at the same price that Philips sells each such product under
its standard distributorship arrangements for such products.

    5.2  Marketing and Sale of the Company's Products.
         --------------------------------------------
Philips agrees to promote and market aggressively the Company's
ACCESS.bus.products, including but not limited to advertising, seminars and
trade shows. Philips also agrees to train and motivate its sales force to sell
the Company's ACCESS.bus products.

                                      -5-
<PAGE>

       5.3   Redemption
             ----------

             (a) During the period commencing one year after the date of this
       Agreement and ending four years after the date of this Agreement, the
       Company may, at any time during such period that it may lawfully do so,
       at the option of the Board of Directors, redeem in whole or in part (but
       not less than 100,000 Shares, unless Phillips shall then own less than
       100,000 Shares) the Shares by paying in cash therefor a sum per Share
       equal to the Redemption Price (as defined in Section 5.3(b) below).

             (b) At least 30 but no more than 60 days prior to the date fixed
       for any redemption of the Shares (the "Redemption Date"), written notice
       shall be mailed, first class postage prepaid, to Philips, notifying
       Philips of the redemption to be effected, specifying the number of shares
       to be redeemed from Philips, the Redemption Date, the Redemption Price,
       the place at which payment may be obtained and calling upon Philips to
       surrender to the Company, in the manner and at the place designated, its
       certificate or certificates representing the Shares to be redeemed (the
       "Redemption Notice"). The "Redemption Price" shall be the amount
       calculated to be the fair market value per Share, such calculation to be
       determined by an independent financial advisor acceptable to Philips and
       the Company and calculated based on an evaluation of price/earnings
       ratios for comparable companies with appropriate discounts for any
       special circumstances applicable to the Company, such as the lack of a
       public market for the Shares. Except as provided in subsection (c)
       hereof, on or after the Redemption Date, in the event of a redemption,
       Philips shall surrender to the Co, applicable the certificate or
       certificates representing the Shares to be redeemed, in the manner and at
       the place designated in the Redemption Notice, and thereupon the
       Redemption Price of such Shares shall be payable to the order of the
       person whose name appears on such certificate or certificates as the
       owner thereof and each surrendered certificate shall be canceled. In the
       event less than all the Shares represented by any such certificate are
       redeemed, a new certificate shall be issued representing the unredeemed
       Shares.

             (c) From and after the Redemption Date, unless there shall have
       been a default in payment of the Redemption Price, all rights of Philips
       under this Agreement (except the right to receive the Redemption Price
       without interest upon surrender of Philips' certificate or certificates)
       shall cease with respect to such redeemed Shares, and such Shares shall
       not thereafter be transferred on the books of the Company or be deemed to
       be outstanding for any purpose whatsoever.

       5.4   Company Right of First Refusal. Philips hereby grants to the
             ------------------------------
Company a right of first refusal to purchase any securities of the Company owned
or controlled by Philips' which Philips may from time to time propose to sell or
transfer. This right of first refusal shall be subject to the following
provisions:

            (a) This right of first refusal shall not apply to any transfers
       among Philips affiliated companies.

                                      -6-

<PAGE>

               (b)   In the event the Phillips proposes to sell or transfer any
     securities of the Company owned or controlled by Philips, Philips shall
     give the Company written notice of its intention, describing the sale of
     such securities, the price and the general terms upon which Philips
     proposes to sell or transfer the same. The Company shall have 45 days from
     the date of any such notice to agree to purchase any amount of such
     securities for the price and upon the general terms specified in the notice
     by giving written notice to Philips and stating therein the quantity of
     Company securities to be purchased.

              (c)    To the extent that the Company does not exercises in full
     its right of first refusal within said 45-day, philips shall have 90 days
     thereafter to sell such Company securities with respect to which the
     Company's option was not exercised at the price and upon the terms
     specified in Philips' notice. In the event that Philips has not sold such
     Company securities within said 90-day period, Philips shall not thereafter
     sell or transfer any such Company securities without first offering such
     securities to the Company in the manner provided above.

              (d)    The right of first refusal granted to the Company in this
     Section 5.4 shall terminate and be of no further force or effect
     immediately prior to the closing of a firmly underwritten public offering
     of the Company's capital stock pursuant to a registration statement under
     the Securities Act with aggregate proceeds to the Company in excess of
     $5,000,000.

     5.5      Market Standoff Agreement.  Philips agrees, if requested by the
              -------------------------
Company or any underwriter of the Company's securities in a firmly underwritten
initial public offering of the Company's securities, not to, directly or
indirectly, sell, offer to sell, grant any option for the sale of, grant a
security interest in, pledge, hypothecate or otherwise dispose of, any shares of
Common Stock of the Company, or any other shares of capital stock of the Company
convertible into or exchangeable for shares of such Common Stock, or any
options, warrants or other rights to acquire shares of such Common Stock, or any
interest in such shares or rights, for a period of 180 days after the date of
the final Prospectus for such initial public offering without the prior written
consent of the Company and any such underwriter; provided that all directors and
officers of the Company enter into a market standoff agreement on substantially
the same terms as contained herein.

      5.6     Nondisclosure.
              -------------

              (a)  Philips agrees that it will not make any announcement to the
      press or general public of the existence or terms of this agreement
      without the prior written consent of the Company unless required by law or
      court order. Notwithstanding the foregoing sentence, Philips and the
      Company will cooperate to publish a joint press release regarding this
      Agreement at an agreed upon future date.

                                      -7-

<PAGE>

          (b)  Philips will treat all information delivered pursuant to Section
     4.1(e) hereof as confidential and not disclose such information to any
     third party unless required by law or court order.

     5.7  Termination.  The covenant of Philips pursuant to Section 5.1 shall
          -----------
     terminate:

          (a)  unless the Company shall have exercised its redemption right
     pursuant to Section 5.3 hereof, in the event of a Philips Withdrawal, on
     the date four years subsequent to the date of this Agreement; or

          (b)  in the event that the Company shall exercise its redemption right
     pursuant to Section 5.3 hereof, on the Redemption Date.

     The covenant of Philips pursuant to Section 5.2 shall terminate:

          (c)  unless the Company shall have exercised its redemption right
     pursuant to Section 5.3 hereof, if a Philips Withdrawal shall occur, on the
     date of such event; or

          (d)  in the event that the Company shall exercise its redemption right
     pursuant to Section 5.3 hereof, on the Redemption Date.

     The covenants of Philips pursuant to Sections 5.4 and 5.5 shall terminate
and be of no further force or effect at such time as Philips ceases to be a
shareholder of the Company.

                                   SECTION 6

     6.1  Waivers and Amendments.  This Agreement may be waived or amended only
          ----------------------
with the written consent of Philips and the Company, and any such amendment or
waiver shall be binding upon the Company and Philips.

     6.2  Legends.  Each certificate representing the Shares shall be endorsed
          -------
with the following legends ( in addition to any legend required by applicable
state securities laws):
     THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
     UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), AND
     MAY NOT BE SOLD, TRANSFERRED, ASSIGNED OR HYPOTHECATED UNLESS THERE IS AN
     EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT COVERING SUCH
     SECURITIES, THE SALE IS MADE IN ACCORDANCE WITH RULE 144 OR ITS SUCCESSOR
     RULE UNDER THE SECURITIES ACT, OR THE COMPANY RECEIVES AN OPINION OF
     COUNSEL SATISFACTORY TO THE COMPANY THAT AN EXEMPTION FROM SUCH
     REGISTRATION IS AVAILABLE.

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO A MARKET
     STANDOFF AGREEMENT PROHIBITING, UNDER CERTAIN CONDITIONS, THEIR SALE UNTIL
     A PERIOD OF 180 DAYS HAS ELAPSED

                                      -8-

<PAGE>

     AFTER THE DATE OF THE FINAL PROSPECTUS FOR THE INITIAL PUBLIC OFFERING OF
     THE ISSUER'S COMMON STOCK IN A FIRMLY UNDERWRITTEN OFFERING. A COPY OF THE
     AGREEMENT CONTAINING THE MARKET STANDOFF AGREEMENT IS AVAILABLE FOR REVIEW
     AND COPYING WITHOUT CHARGE AT THE ISSUER'S OFFICES.

The Company need not register a transfer of the Shares unless the conditions
specified in the foregoing legends are satisfied, and the Company may instruct
its transfer agent not to register the transfer of any of the Shares unless the
conditions specified in the foregoing legends are satisfied.

     6.3  Governing Law.  This Agreement shall be governed in all respects by
          -------------
the laws of the State of California as such laws are applied to agreements
solely between California residents entered into and to be performed entirely
within California.

     6.4  Survival.  The representations, warranties, covenants and agreements
          --------
made in this Agreement shall survive any investigation made by the Company or
Philips.

     6.5  Successors and Assigns.  The provisions of this Agreement shall inure
          ----------------------
to the benefit of, and be binding upon, the successors, assigns, heirs,
executors and administrators of the parties to this Agreement (specifically
including any successor in interest to Philips in the Shares).

     6.6  Entire Agreement.  This Agreement constitutes the full and entire
          ----------------
understanding and agreement between the parties with regard to the subject
matter thereof.

     6.7  Notices, etc.  All notices and other communications required or
          ------------
permitted under this Agreement shall be effective upon receipt and shall be in
writing and may be delivered in person, by telecopy, overnight delivery service
or U.S. mail, in which event it may be mailed by first-class, certified or
registered, postage prepaid, address to the Company or Philips, as the case may
be, at their respective addresses set forth at the beginning of this Agreement
or at such other address as the Company or Philips shall have furnished to the
other party in writing.

     6.8  Counterparts.  This Agreement may be executed in one or more
          ------------
counterparts, each of which shall be deemed an original, and all of which
together shall constitute one and the same instrument.

                                      -9-

<PAGE>

     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first above written.

COMPUTER ACCESS TECHNOLOGY CORPORATION

By:         /s/  Dan Wilnai
       ---------------------------

Title:           President
       ---------------------------

PHILIPS SEMICONDUCTORS,
      A DIVISION OF PHILIPS ELECTRONICS NORTH AMERICA CORPORATION

By:    /s/  (Signature illegible)
       ---------------------------

Title:         V-P & CFO
       --------------------------

                                     -10-

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