Abstract: This paper designed an extended multiplication-accumulator unit, DSPMAC, to achieve calculation accelerating. Based on or1200 multiplication-accumulator unit, using RISC technology and parallel operation to exploit the reserved bits in 32-bit instruction, the design tried to achieve accelerating of continuous multiplication-accumulator operations with less increase of resource occupation and some cost of power andtemperature. According to the testing results, DSPMAC unit has achieved the purpose.Key words: DSP multiplication-accumulator (DSPMAC); RISC; speed; power consumption; temperature
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