An open-source based DSP with enhanced multimedia-processing capacity for embedded applications
Songping Mai; Kun Yang; Wenli Lan; Chun Zhang; Zhihua Wang
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Volume , Issue , 0-0 0 Page(s):4 pp. - 942
Digital Object Identifier   10.1109/ISCAS.2006.1692741
Summary:This paper proposes an open-source based 32-bit digital signal processor (DSP) suitable for embedded multimedia processing applications. The DSP is a MIPS-based scalar RISC with Harvard micro architecture, 5-stage integer pipeline and enhanced multimedia-processing capacity. It features a data path including non-aligned data access mechanism, two-dimensional DMA function and separated embedded instruction and data memories. This special architecture greatly promotes execution efficiency of boundary-crossed and block data access operations often found in multimedia processing. The processor achieves 80-MIPS performance with typical power dissipation of 88 mW. The prototype has been fabricated using UMC 0.18mum n-well 1P6M standard CMOS technology

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