EXHIBIT 23.1

              CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

We consent to the incorporation by reference in the Registration Statements on 
Form S-8 No. 333-40905 pertaining to the 1997 Employee Stock Purchase Plan and 
No. 333-47185 pertaining to the 1982 Employee Incentive Stock Option Plan, the 
1992 Employee Stock Option Plan and the 1997 Directors' Stock Option Plan of 
Applied Micro Circuits Corporation of our report dated April 21, 1998, with 
respect to the consolidated financial statements, as amended, and schedule of 
Applied Micro Circuits Corporation included in this Form 10-K/A.

                                      ERNST & YOUNG LLP

San Diego, California
October 14, 1998