Modular logic built-in self-test for IP cores

  • Authors:
  • Janusz Rajski;Jerzy Tyszer

  • Affiliations:
  • -;-

  • Venue:
  • ITC '98 Proceedings of the 1998 IEEE International Test Conference
  • Year:
  • 1998

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Abstract

The paper presents a new modular logic BIST architecturefor intellectual property (IP) cores and block-orienteddesign methodology. The scheme involves two-step developmentprocess: design and analysis of BIST-ready IPcores and system integration. A BIST-ready core has insertedscan chains, test points, a repeater with phaseshifter to perform serial to parallel conversion of test vectors,and a space-time test-response compactor. It is alsosimulated to determine its fault coverage and signature fora specified configuration of BIST hardware. Particulars ofa method to compute the composite signature for the wholedesign based on signatures representing individual coresare presented altogether with a new technique to expandtest vectors. At the system ASIC level, the paper demonstrateshow multiple cores can be seamlessly integratedand then tested in exactly the same manner as they wereanalyzed by sharing the same BIST controller.