Coarse floating point accumulator circuit, and mac processing pipelines including same

Abstract

An integrated circuit including a multiplier-accumulator circuit pipeline including a plurality of MAC circuits. Each MAC circuit includes: (A) a multiplier circuit to multiply first input data and filter weight data to generate and output first product data having a floating point data format, and (B) a coarse floating point accumulator circuit including: (1) an alignment shift circuit to shift at least one field of the first product data and generate shifted first product data, and (2) fixed point addition circuitry, coupled to the alignment shift circuit, to add second input data and the shifted first product data using the fixed point addition circuitry. The plurality of MAC circuits of the multiplier-accumulator circuit execution pipeline, in operation, each perform a plurality of multiply operations and accumulate operations to process the first input data and generate processed data therefrom.