Nine-Coded Compression Technique with Application to Reduced Pin-Count Testing and Flexible On-Chip Decompression

  • Authors:
  • Mohammad Tehranipour;Mehrdad Nourani;Krishnendu Chakrabarty

  • Affiliations:
  • -;-;-

  • Venue:
  • Proceedings of the conference on Design, automation and test in Europe - Volume 2
  • Year:
  • 2004

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Abstract

This paper presents a new test data compression technique based on a compression code that uses exactly nine code-words. In spite of its simplicity, it provides significant reduction intest data volume and test application time. In addition, the decompression logic is very small and independent of the precomputed test data set. Our technique leaves many don't-care bitsunchanged in the compressed test set, and these bits can be filled randomly to detect non-modeled faults. The proposed technique can be efficiently adopted for single- or multiple-scan chain designs to reduce test application time and pin requirement. Experimentalresults for ISCAS'89 benchmarks illustrate the flexibility and efficiency of the proposed technique.