Hierarchical VLSI Fault Tracing by Successive CircuitExtraction from CAD Layout Data in the CAD-Linked EB TestSystem

  • Authors:
  • Katsuyoshi Miura;Koji Nakamae;Hiromu Fujioka

  • Affiliations:
  • Department of Information Systems Engineering, Faculty of Engineering, Osaka University, Yamada-Oka 2-1, Suita, Osaka, 565 Japan. E-mail: miura@ise.eng.osaka-u.ac.jp, nakamae@ise.eng.osaka-u.ac.j ...;Department of Information Systems Engineering, Faculty of Engineering, Osaka University, Yamada-Oka 2-1, Suita, Osaka, 565 Japan. E-mail: miura@ise.eng.osaka-u.ac.jp, nakamae@ise.eng.osaka-u.ac.j ...;Department of Information Systems Engineering, Faculty of Engineering, Osaka University, Yamada-Oka 2-1, Suita, Osaka, 565 Japan. E-mail: miura@ise.eng.osaka-u.ac.jp, nakamae@ise.eng.osaka-u.ac.j ...

  • Venue:
  • Journal of Electronic Testing: Theory and Applications
  • Year:
  • 1997

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Abstract

A hierarchical VLSI fault tracing method is proposed which isapplicable to the case where only CAD layout data is available in theCAD-linked electron beam test system. The CAD layout data is assumedto be hierarchically structured. The method uses the expansion of apreviously proposed integrated algorithm which combines atransistor-level fault tracing algorithm and a successive circuitextraction from a non-hierarchically or a flat structured CAD layoutdata. The method allows us to trace a fault hierarchically from thetop level cell to the lowest primitive cell and from the primitivecell to the transistor-level circuit in a consistent mannerindependent of circuit functions even when the cell data and thetransistor-level circuit data exist in a level as a mixture. Anapplication of the method to a hierarchically structured CMOS modellayout with about 600 transistors shows its validity.