Dynamic fault dictionaries and two-stage fault isolation

  • Authors:
  • Paul G. Ryan;W. Kent Fuchs

  • Affiliations:
  • Intel Corporation, Santa Clara, CA;School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN

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

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Abstract

This paper presents dynamic two-stage fault isolation for sequential random logic very large scale integrated (VLSI) circuits, and introduces limited and dynamic fault dictionaries. In the first stage of the dynamic process, a limited fault dictionary identifies candidate faults, which are further distinguished in the second stage by a dictionary generated dynamically for the candidate faults and a subset of the test vectors. This provides high resolution but avoids the costs of full static dictionaries. Two-stage fault isolation is evaluated for benchmark circuits and on defects in industrial circuits.