Digital Signal Processor: An Overview of the Silicon Very- Large-Scale-Integration Implementation

A single-chip integrated circuit has been developed as a stand-alone part for digital signal processing. This device known as a digital signal processor (DSP) functions as a special-purpose microcomputer whose instruction set, arithmetic functions, and addressing capability are optimized for real-time signal processing. The primary sections of the DSP are a read only memory (ROM), a random access memory (RAM), an address arithmetic unit (AAU), an arithmetic unit (AU), a system controller, and appropriate input/output (i/o) circuitry. The R M is organized as 1024 words by 16-bits per-word memory for O storing the system programs and fixed data. The RAM is organized as 128 words by 20 bits per word and is used for storage of variable data and temporary results. The AAU generates the addresses for the RAM 1441 DESIGN STAGE FABRICATION STAGE Fig. 1--Integrated circuit implementation process.