A robust edge encoding technique for energy-efficient multi-cycle interconnect

In this paper, we propose a new edge encoding technique to reduce the energy consumption in multi-cycle interconnects. Both average and worst-case energy are reduced by desynchronizing the edges of rising and falling transitions. In a 1.2V 65nm CMOS technology, the approach achieves up to 31% energy...

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Bibliographic Details
Published in:	ISLPED '07 : proceedings of the International Symposium on Low Power Electronics and Design : Portland, Oregon, USA, August 27-29, 2007 pp. 68 - 73
Main Authors:	Jae-sun Seo, Sylvester, D, Blaauw, D, Kaul, H, Krishnamurthy, R
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01.08.2007
Subjects:	Algorithm design and analysis Circuits Clustering algorithms CMOS technology Delay estimation Encoding Energy efficiency interconnect multi-cycle interconnect repeaters Robustness Timing
Online Access:	Get full text
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Summary:	In this paper, we propose a new edge encoding technique to reduce the energy consumption in multi-cycle interconnects. Both average and worst-case energy are reduced by desynchronizing the edges of rising and falling transitions. In a 1.2V 65nm CMOS technology, the approach achieves up to 31% energy reduction with no latency overhead over optimally designed conventional busses due to coupling capacitance reductions. The technique further reduces energy consumption by 38% with iso-throughput at the expense of one-cycle latency. Energy savings are shown to be more robust to process variations than previous techniques.
DOI:	10.1145/1283780.1283796