A Novel Technique to Design Energy-Efficient Contexts for Reconfigurable Logic Devices

Hiroshi SHINOHARA  Hideaki MONJI  Masahiro IIDA  Toshinori SUEYOSHI  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E90-D   No.12   pp.1986-1989
Publication Date: 2007/12/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e90-d.12.1986
Print ISSN: 0916-8532
Type of Manuscript: Special Section LETTER (Special Section on Reconfigurable Systems)
Category: 
Keyword: 
low power technique,  resource sharing,  dynamically reconfigurable logic,  

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Summary: 
High power consumption is a constraining factor for the growth of programmable logic devices. We propose two techniques in order to reduce power consumption. The first is a technique for creating contexts. This technique uses data-dependent circuits and wire sharing between contexts. The second is a technique for switching the contexts. In this paper, we evaluate the capability of the two techniques to reduce power consumption using a multi-context logic device. As a result, as compared with the original circuit, our multi-context circuits reduced the power consumption by 9.1% on an average and by a maximum of 19.0%. Furthermore, applying our resource sharing technique to these circuits, we achieved a reduction of 10.6% on an average and a maximum reduction of 18.8%.