Architectural optimization for low-power nonpipelined asynchronous systems

  • Authors:
  • Luis A. Plana;Steven M. Nowick

  • Affiliations:
  • Department of Computer Science, Columbia University, New York NY;Department of Computer Science, Columbia University, New York NY

  • Venue:
  • IEEE Transactions on Very Large Scale Integration (VLSI) Systems
  • Year:
  • 1998

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Abstract

This paper presents an architectural optimization for low-power asynchronous systems. The optimization is targeted to nonpipelined computation. In particular, two new sequencing controllers are introduced, which significantly increase the throughput of the entire system. Data hazards may result in existing datapaths, when the new sequencers are used. To insure correct operation, new interlock mechanisms are introduced, for both dual-rail and single-rail implementations. The resulting increase in throughput can be traded for substantial system-wide power savings through application of voltage scaling. SPICE simulations show energy reduction by up to a factor of 2.4.