Critical hazard free test generation for asynchronous circuits

  • Authors:
  • A. Khoche;E. Brunvand

  • Affiliations:
  • -;-

  • Venue:
  • VTS '97 Proceedings of the 15th IEEE VLSI Test Symposium
  • Year:
  • 1997

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Abstract

We describe a technique to generate critical hazard-free tests for self-timed control circuits built using a macro-module library, in a partial scan based DFT environment. We propose a six-valued algebra to generate these tests which are guaranteed to be critical hazard free under an unbounded delay model. This algebra has been incorporated in a D-algorithm based automatic test pattern generator.