Delay Fault Diagnosis for Non-Robust Test

  • Authors:
  • Vishal J. Mehta;Malgorzata Marek-Sadowska;Zhiyuan Wang;Kun-Han Tsai;Janusz Rajski

  • Affiliations:
  • UC, Santa Barbara,CA;UC, Santa Barbara,CA;Cisco Systems Inc., San Jose, CA;Mentor Graphics Corporation, Wilsonville, OR;Mentor Graphics Corporation, Wilsonville, OR

  • Venue:
  • ISQED '06 Proceedings of the 7th International Symposium on Quality Electronic Design
  • Year:
  • 2006

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Abstract

defects and parameter variations often cause design timing failures. It is essential that those errors be correctly and quickly diagnosed. The existing delay-fault diagnosis algorithms cannot identify the delay faults that require nonrobust tests, because they ignore non-robust propagation conditions while emulating the failure analyzer's behavior. We propose a novel approach to perform delay-fault diagnosis for robust and non-robust tests. The experimental results show that our approach can diagnose delay faults with good resolution. It is stable with respect to delay variations that the failure analyzer might experience.