On a design of crossroad switches for low-power on-chip communication architectures

Jih G. Shen*, Kuei Chung Chang, Tien-Fu Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

As the number of cores on a chip increases, power consumed by the communication structures takes significant portion of the overall power-budget. We first propose a novel 2-D segmented interconnect architecture, which uses crossroad switches to dynamically construct a dedicated communication path between any two cores. We then present two application-specific bus operation schemes (Normal mode and lease line mode). Each switch may operate with a "lease line", which can dynamically offer a dedicated path between two highly-communicative cores for a specific period according to the application characteristics. Finally, we present a concept of wrappers to help designers use our crossroad architecture as communication backbone. We take the JPEG and MPEG4 reference codes as our case studies and experimental results show the power consumptions can be saved if we dynamically control NoC switches when the behavior of the embedded software is well-known.

Original languageEnglish
Title of host publicationISCAS 2006
Subtitle of host publication2006 IEEE International Symposium on Circuits and Systems, Proceedings
Pages477-480
Number of pages4
DOIs
StatePublished - 1 Dec 2006
EventISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems - Kos, Greece
Duration: 21 May 200624 May 2006

Publication series

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

Conference

ConferenceISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems
CountryGreece
CityKos
Period21/05/0624/05/06

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