ADSP-2191 is a DSP microprocessor developed by Analog Devices, with a 6.25ns instruction cycle time (internal), which can operate continuously at up to 160MIPS, is compatible with the ADSP-218x family code, and has single-cycle instruction execution, up to 16M words of addressable memory space, dual-purpose program memory for instruction and data storage, fully transparent instruction cache, unified memory space, independent ALU, multiplier/accumulator, bucket shifter calculation unit, two sets of calculation units and DAG registers Single-cycle environment switching, parallel execution of calculation and memory instructions, pipeline structure supports efficient code execution, register file calculation has all unconditional, no parallel calculation instructions, powerful program sequencer provides zero-cost loop and conditional instruction execution, and structure enhancement for compiled C code efficiency.