Mixed-Mode BIST Using Embedded Processors

  • Authors:
  • Sybille Hellebrand;Hans-Joachim Wunderlich;Andre Hertwig

  • Affiliations:
  • Division of Computer Architecture, University of Stuttgart, Breitwiesenstr. 20-22, 70565 Stuttgart, Germany.;Division of Computer Architecture, University of Stuttgart, Breitwiesenstr. 20-22, 70565 Stuttgart, Germany.;Division of Computer Architecture, University of Stuttgart, Breitwiesenstr. 20-22, 70565 Stuttgart, Germany.

  • Venue:
  • Journal of Electronic Testing: Theory and Applications - Special issue on On-line testing
  • Year:
  • 1998

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Abstract

In complex systems, embedded processors may be used torun software routines for test pattern generation and responseevaluation. For system components which are not completelyrandom pattern testable, the test programs have to generatedeterministic patterns after random testing. Usually the randomtest part of the program requires long run times whereas thepart for deterministic testing has high memory requirements.In this paper it is shown that an appropriate selection of therandom pattern test method can significantly reduce the memoryrequirements of the deterministic part. A new, highly efficientscheme for software-based random pattern testing is proposed,and it is shown how to extend the scheme for deterministic testpattern generation. The entire test scheme may also be used forimplementing a scan based BIST in hardware.