EXHIBIT 23.1

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


We consent to the incorporation by reference in the Registration Statement on
Form S-8 pertaining to the 1998 Employee Stock Purchase Plan, of our report
dated April 20, 2001, with respect to the consolidated financial statements and
schedule of Applied Micro Circuits Corporation, included in its Annual Report on
Form 10-K for the fiscal year ended March 31, 2001, filed with the Securities
and Exchange Commission.

/s/ Ernst & Young LLP

ERNST & YOUNG LLP

San Diego, California
October 17, 2001