Exhibit 31.2
CERTIFICATION OF CHIEF FINANCIAL OFFICER
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, Robert G. Gargus, Senior Vice President and Chief Financial Officer, certify that:
1. I have reviewed this Quarterly Report on Form 10-Q/A of Applied Micro Circuits Corporation; and
2. Based on my knowledge, this 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 report.
| /S/ ROBERT G. GARGUS |
Robert G. Gargus, Senior Vice President and Chief Financial Officer |
Dated: September 4, 2009