Accumulator Registers - Accumulator Registers - AM027

Accumulator registers are used to store the results of the vector data path and are 512-bit wide, they can be viewed as sixteen lanes of 32-bit data or eight lanes of 64-bit data. The main reason to have wider accumulator registers is to have high precision multiplication and accumulate over those results without bit overflows. The accumulator registers are prefixed with bm. Two of them are aliased to form a 1024-bit register prefixed with cm, and two cm can be aliased to form a 2048-bit register prefixed with dm.