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Optimization techniques for asynchronous circuit design

Research Project

Project/Area Number 23300020
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Computer system/Network
Research InstitutionNational Institute of Informatics

Principal Investigator

YONEDA Tomohiro  国立情報学研究所, アーキテクチャ科学研究系, 教授 (30182851)

Project Period (FY) 2011-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords非同期式回路 / 最適化 / 遅延値決定 / 配置最適化 / 設計容易化 / 遷移型制御 / 束データ方式 / 遷移型制御回路 / マルチクロックフリップフロップ / 非同期式ネットワークオンチップルータ / マッチドディレイの最適化 / レイアウトの最適化 / パス遅延情報 / レイアウトのグルーピング
Outline of Final Research Achievements

Asynchronous circuits are circuits that do not need any global clock systems. Thus, they have the potential for solving a number of problems, such as clock skew problems, related to global clock systems in the synchronous circuit design. On the other hand, for practice use of asynchronous circuits, various optimization techniques specific to asynchronous circuit design are indispensable. For this purpose, we have developed (1) a tool to determine near-optimal delay values for matched delay elements that are needed for local-handshaking in the bundled-data asynchronous circuits, (2) a tool to generate scripts given to commercial Place & Route CAD tools for packing primitive registers and other instances specified by users, in order to minimize delays that affect the system performance, (3) an idea to implement transition signaling asynchronous circuits very easily using a new type of flip-flops that have multiple-clock inputs and are multiple-edge sensitive.

Report

(4 results)
  • 2014 Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (5 results)

All 2014 2011 Other

All Presentation (5 results)

  • [Presentation] An NoC-based Evaluation Platform for Safety-Critical Automotive Applications2014

    • Author(s)
      Tomohiro Yoneda, Masashi Imai, Hiroshi Saito, Takahiro Hanyu, Kenji Kise, Yuichi Nakamura
    • Organizer
      APCCAS2014
    • Place of Presentation
      ANAインターコンチネンタル石垣リゾート( 沖縄県石垣市)
    • Year and Date
      2014-11-17 – 2014-11-20
    • Related Report
      2013 Annual Research Report
  • [Presentation] Multiple-Clock Multiple-Edge-Triggered Multiple-Bit Flip-flops for Two-Phase Handshaking Asynchronous Circuits2014

    • Author(s)
      Masashi Imai, Tomohiro Yoneda
    • Organizer
      ISCAS2014
    • Place of Presentation
      オーストラリア,メルボルン
    • Year and Date
      2014-06-01 – 2014-06-04
    • Related Report
      2013 Annual Research Report
  • [Presentation] Dependability Techniques for Networks on Chips2011

    • Author(s)
      T.Yoneda
    • Organizer
      IFIP WG 10.4 60^<th> meeting
    • Place of Presentation
      Taoyuan, Taiwan(招待講演)
    • Year and Date
      2011-07-02
    • Related Report
      2011 Annual Research Report
  • [Presentation] Asynchronous Network-on-Chip and its potential2011

    • Author(s)
      T.Yoneda
    • Organizer
      The 11th International Conference on Application of Concurrency to System Design
    • Place of Presentation
      Newcastle upon Tyne, UK(招待講演)
    • Year and Date
      2011-06-22
    • Related Report
      2011 Annual Research Report
  • [Presentation] A Floorplan Method for SDI-model-based Asynchronous Circuits to Achieve High Robustness against Delay Variations

    • Author(s)
      Masashi Imai, Tomohiro Yoneda
    • Organizer
      IEEE/ACM Workshop on CAD for Multi-Synchronous and Asynchronous Circuits and Systems 2012
    • Place of Presentation
      San Jose, CA, USA
    • Related Report
      2012 Annual Research Report

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Published: 2011-04-06   Modified: 2019-07-29  

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