내장형 시스템에 적합한 32 비트 RISC/DSP 마이크로프로세서에 관한 연구

A Study on the 32 bit RISC/DSP Microprocessor Appropriate for Embedded Systems

We have designed a 32-bit RISC microprocessor with 16/32-bit fixed-point DSP functionality. This processor, called YRD-5, combines both general-purpose microprocessor and digital signal processor (DSP) functionality using the reduced instruction set computer (RISC) design principles. It has functional units for arithmetic operation, digital signal processing (DSP) and memory access. They operate in parallel in order to remove stall cycles after DSP and load/store instructions with one or more issue latency cycles. High performance was achieved with these parallel functional units while adopting a sophisticated 5-stage pipeline structure and an improved DSP unit.