A Fixed-Point DSP (MDSP) Chip for Portable Multimedia

Soohwan ONG  Myung H. SUNWOO  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E82-A   No.6   pp.939-944
Publication Date: 1999/06/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section of Papers Selected from 1998 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC '98))
Category: 
Keyword: 
SIMD,  vector processing,  parallel architecture,  video signal processing,  digital signal processing,  

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Summary: 
Existing multimedia processors having millions of transistors are not suitable for portable multimedia services and existing fixed-point DSP chips having fixed data formats are not appropriate for multimedia applications. This paper proposes a multimedia fixed-point DSP (MDSP) chip for portable multimedia services and its chip implementation. MDSP employs parallel processing techniques, such as SIMD, vector processing, and DSP techniques. MDSP can handle 8-, 16-, 32- or 40-bit data and can perform two MAC operations in parallel. In addition, MDSP can complete two vector operations with two data movements in a cycle. With these features, MDSP can handle both 2-D video signal processing and 1-D signal processing. The prototype MDSP chip has 68,831 gates, has been fabricated, and is running at 30 MHz.