Adaptec 2002 Annual Report Download - page 88

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I, Alan F. Krock, certify that:
1. I have reviewed this annual report on Form 10−K of PMC−Sierra, Inc.;
2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or
omit to state a material fact necessary to make the statements made, in light of the circumstances under
which such statements were made, not misleading with respect to the period covered by this annual report;
3. Based on my knowledge, the financial statements, and other financial information included in this annual
report, fairly present in all material respects the financial condition, results of operations and cash
flows of the registrant as of, and for, the periods presented in this annual report;
4. The registrant's other certifying officers and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Exchange Act Rules 13a−14 and 15d−14) for the registrant
and have:
a) designed such disclosure controls and procedures to ensure that material
information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities,
particularly during the period in which this annual report is being
prepared;
b) evaluated the effectiveness of the registrant's disclosure controls and
procedures as of a date within 90 days prior to the filing date of this
annual report (the "Evaluation Date"); and
c) presented in this annual report our conclusions about the effectiveness
of the disclosure controls and procedures based on our evaluation as of the
Evaluation Date;
5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to
the registrant's auditors and the audit committee of registrant's board of directors (or persons performing
the equivalent functions):
a) all significant deficiencies in the design or operation of internal
controls which could adversely affect the registrant's ability to record,
process, summarize and report financial data and have identified for the
registrant's auditors any material weaknesses in internal controls; and
b) any fraud, whether or not material, that involves management or other
employees who have a significant role in the registrant's internal
controls; and
6. The registrant's other certifying officers and I have indicated in this annual report whether there were
significant changes in internal controls or in other factors that could significantly affect internal
controls subsequent to the date of our most recent evaluation, including any corrective actions with regard
to significant deficiencies and material weaknesses.
Date: March 27, 2003 /s/ Alan F. Krock
−−−−−−−−−−−−−− −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
Alan F. Krock
Vice President, Finance
Chief Financial Officer and
Principal Accounting Officer
87