Semi-modular Latch Chains for Asynchronous Circuit Design

  • Authors:
  • N. Starodoubtsev;A. V. Bystrov;Alexandre Yakovlev

  • Affiliations:
  • -;-;-

  • Venue:
  • PATMOS '00 Proceedings of the 10th International Workshop on Integrated Circuit Design, Power and Timing Modeling, Optimization and Simulation
  • Year:
  • 2000

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Abstract

A structural discipline for constructing speed-independent (hazard-free) circuits based on canonical chains of set-dominant and reset-dominant latches is proposed. The method can be applied to decompose complex asymmetric C-gate generated by logic synthesis from Signal Transition Graphs, and to map them into a restricted gate array ASIC library, such as IBM SA-12E that consists of logic gates with maximum four inputs and includes AO12, AOI12, OA12 and OAI12. The method is illustrated by new implementations of practically useful asynchronous circuits: a toggle element and an edge-triggered latch controller.