A routing approach to reduce glitches in low power FPGAS

Quang Dinh, Deming Chen, Martin D. F. Wong

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

8 Citations (Scopus)


Glitches (spurious transitions) are common in electronic circuits. In this paper we present a novel approach to reduce dynamic power in FPGAs by reducing glitches during the routing step. This approach involves finding alternative routes for early-arriving signals, so that signal arrival times at LUTs are aligned and no glitches are generated. This approach does not require additional circuitry to balance signals as done in previous work, but uses the available programmable routing resources instead. We develop an efficient algorithm to find routes with target delays. Based on this algorithm, we then build a glitch-aware router, named GlitchReroute, aiming at reducing dynamic power. To the best of our knowledge, this is the first glitch-aware routing algorithm for FPGAs. Experiments show that an average of 23% reduction in glitch power is achieved, which translates into a 9.8% reduction in dynamic power, compared to the glitch-unaware VPR router.

Original languageEnglish
Title of host publicationISPD '09
Subtitle of host publicationProceedings of the 2009 International Symposium on Physical Design, ISPD'09
PublisherAssociation for Computing Machinery (ACM)
Number of pages7
ISBN (Print)9781605584492
Publication statusPublished - 29 Mar 2009
Event18th International Symposium on Physical Design, ISPD 2009 - San Diego, United States
Duration: 29 Mar 20091 Apr 2009
https://dl.acm.org/doi/proceedings/10.1145/1514932 (Conference proceedings)

Publication series

NameProceedings of the International Symposium on Physical Design, ISPD


Symposium18th International Symposium on Physical Design, ISPD 2009
Country/TerritoryUnited States
CitySan Diego
Internet address

Scopus Subject Areas

  • Electrical and Electronic Engineering

User-Defined Keywords

  • FPGAs
  • Low Power
  • Glitch Reduction
  • Path Balancing
  • Routing.


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