MULTIPLY-ACCUMULATE (MAC) UNIT FOR SINGLE-INSTRUCTION/MULTIPLE-DATA (SIMD) INSTRUCTION

摘要

PROBLEM TO BE SOLVED: To provide a multiply-accumulate (MAC) architecture of high-performance and low-power consumption when using DSP for wireless/portable equipment products.;SOLUTION: A tightly coupled dual 16-bit multiply-accumulate (MAC) unit for performing single-instruction/multiple-data (SIMD) operations may forward an intermediate result to another operation in a pipeline to resolve an accumulating dependency penalty. The MAC unit may also be used to perform 32-bit×32-bit operations.;COPYRIGHT: (C)2008,JPO&INPIT