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The Micro-architecture Design for MAC in DSP

Usually we need to design a complex multiplier/accumulator (MAC) for a digital signal processor, and we have to implement many functions for the MAC in the DSP design. Not only we need to deal with the usual signed and unsigned numbers simultaneously, but solve the rounding, saturation, fraction and integer mode multiplication simultaneously. So it's difficult to find a high performance but low cost solution. This paper gives analysis for a general specification of the complicated multiply accumulation cell, and then presents a dedicated solution for a kind of complicated multiplier/accumulator. It's a high performance but low cost solution for MAC.