multiplier-accumulator

multiplier-accumulator

A general-purpose floating point processor that multiplies and accumulates the results of the multiplication. Newer versions also perform division and square roots.
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Multiplier and adder unit of Multiplier-Accumulator (MAC) control unit is the main building block in high end processors such as DSP, FPGA's etc .
A Review of Different Type of Multipliers and Multiplier-Accumulator Unit, International Journal of Emerging Trends and Technology in Computer Science, 2(4): 364-368.
Its key features include: Support for four 32x32-bit multiplier-accumulators (MACs) per cycle with 72-bit accumulators, more than double the performance of other audio DSPs for computationally intensive functions such as fast Fourier transform (FFT) and finite impulse response (FIR), Support for eight 32x16-bit MACs per cycle under specified conditions, Four very long instruction word (VLIW) slot architecture capable of issuing two 64-bit loads per cycle, Optional vector floating-point unit available, providing up to four single-precision IEEE floating-point MACs per cycle, Software compatible with the existing HiFi DSP family consisting of over 140 HiFi-optimized audio and voice codecs and audio enhancement software packages.