Practical Scan Test Generation and Application for Embedded FIFOs

  • Authors:
  • Jeff Rearick

  • Affiliations:
  • -

  • Venue:
  • ITC '99 Proceedings of the 1999 IEEE International Test Conference
  • Year:
  • 1999

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Abstract

This paper describes a method for testing non-scanned embedded latch-based FIFOs on an otherwise full-scan chip by using the scan registers thatsurround the FIFO and sharing the test applicationtime with the other ASIC scan tests. The techniqueof excising the FIFOs from the ASIC to allow separate and effective test generation for each is explained, as is the process used to merge the two testsback together for efficient test application. Resultsare presented for three example ASICs which indicate that the method is both efficient and thorough.