Non-Intrusive BIST for Systems-on-a-Chip

  • Authors:
  • Silvia CHIUSANO;PAOLO PRINETTO;HANS-JOACHIM WUNDERLICH

  • Affiliations:
  • -;-;-

  • Venue:
  • ITC '00 Proceedings of the 2000 IEEE International Test Conference
  • Year:
  • 2000

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Abstract

The term "functional BIST" describes a test method tocontrol functional modules so that they generate a deterministictest set, which targets structural faults withinother parts of the system. It is a promising solution forself-testing complex digital systems at reduced costs interms of area overhead and performance degradation.While previous work mainly investigated the use of functional modules for generating pseudo-random andpseudo-exhaustive test patterns, the present paper shows that a variety of modules can also be used as adeterministic test pattern generator via an appropriatereseeding strategy. This method enables a BIST techniquethat does not introduce additional hardware like testpoints and test registers into combinational and pipelinedmodules under test. The experimental results prove thatthe reseeding method works for accumulator basedstructures, multipliers, or encryption modules as efficiently as for the classic linear feedback shift registers,and some times even better.