Adjacent-state monitoring based fine-grained power-gating scheme for a low-power asynchronous pipelined system

Takao Kawano, Naoya Onizawa, Atsushi Matsumoto, Takahiro Hanyu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

A new gate-level power-gating scheme with a small power-gating controller is proposed for greedily power-aware asynchronous pipelined system. The power supply of each standby stage consisting of a combinational block and a pipeline latch can be cut off by a sleep transistor, because a condition of an asynchronous operation is always monitored by using signal conditions in adjacent stages, which completely eliminates wasted power dissipation in standby stages. Since sleep-transistor control signals in each stage are simply generated by just modifying asynchronous control signals in its adjacent stage, the power-gating controller can be realized by inserting a few basic logic gates. The efficiency of the proposed scheme is demonstrated by using HSPICE simulation. The leakage power dissipation of the asynchronous circuit using the proposed method is reduced to 11.8% in comparison with that of the asynchronous one using a conventional power-gating method.

Original languageEnglish
Title of host publication2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011
Pages2067-2070
Number of pages4
DOIs
Publication statusPublished - 2011 Aug 2
Event2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011 - Rio de Janeiro, Brazil
Duration: 2011 May 152011 May 18

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Other

Other2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011
CountryBrazil
CityRio de Janeiro
Period11/5/1511/5/18

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Kawano, T., Onizawa, N., Matsumoto, A., & Hanyu, T. (2011). Adjacent-state monitoring based fine-grained power-gating scheme for a low-power asynchronous pipelined system. In 2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011 (pp. 2067-2070). [5938004] (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2011.5938004