Soft-Core Processor Architecture for Embedded System Design

Eko Fajar NURPRASETYO  Akihiko INOUE  Hiroyuki TOMIYAMA  Hiroto YASUURA  

IEICE TRANSACTIONS on Electronics   Vol.E81-C   No.9   pp.1416-1423
Publication Date: 1998/09/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Novel VLSI Processor Architectures)
scalable processor,  datapath width,  memory,  

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In the design of an embedded system, an architecture of core processor strongly affects the performance and cost of the total system. This paper discusses a scalable processor architecture, called soft-core processor, which can be tuned for a target system. System designers can optimize several design parameters such as the datapath width and instruction set, and generate customized processors for their application. Design of Bung-DLX as a prototype of soft-core processor is presented in this paper. An experiment of system design using our processor has shown that the optimized processor chip area halves when the critical path delay is reduced to one third of the original one.