A Novel Functional Test Generation Method for Processors using Commercial ATPG

  • Authors:
  • Raghuram S. Tupuri;Jacob A. Abraham

  • Affiliations:
  • -;-

  • Venue:
  • ITC '97 Proceedings of the 1997 IEEE International Test Conference
  • Year:
  • 1997

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Abstract

As the sizes of general and special purpose processorsincrease rapidly, generating high quality manufacturingtests for them is becoming a serious problem in industry.This paper describes a novel method for hierarchicalfunctional test generation for processors which targetsone embedded module at a time and uses commercialATPG tools to derive tests for faults within the module.Applying the technique to benchmark processor designs,we were able to obtain test efficiencies for the embeddedmodules of the processors which were extremely close towhat the commercial ATPG could do with completeaccess to the module. The hierarchical approach usedproduced this result, using the same commercial tool,but required a CPU time several orders of magnitudeless than when using a conventional, flat view of thecircuit.