Exhibit 23.1

             CONSENT OF DELOITTE & TOUCHE LLP, INDEPENDENT AUDITORS

We consent to the  incorporation  by  reference in this  Amendment  No. 1 to the
Registration Statement No. 333-40508 on Form S-8 of our report dated January 17,
2000 on the consolidated financial statements and schedule of PMC-Sierra,  Inc.,
included in the Annual  Report  (Form  10-K/A) for the year ended  December  26,
1999,  and of our report dated January 17, 2000 (July 11, 2000 as to Notes 2 and
4) on the consolidated  financial  statements of PMC-Sierra,  Inc. for the years
ended  December  31,  1999,  1998 and 1997  included  in the  Amendment  No.1 to
Registration Statement No. 333-41878 of PMC-Sierra, Inc. on Form S-4.

/s/DELOITTE & TOUCHE LLP

Vancouver, British Columbia, Canada
August 22, 2000