High-coverage ATPG for datapath circuits with unimplemented blocks

  • Authors:
  • Hyungwon Kim;John P. Hayes

  • Affiliations:
  • -;-

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

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Abstract

Conventional ATPG cannot effectively handle designsemploying IP circuits (cores) whose implementation detailsare either unknown, unavailable, or subject to change. Anew ATPG program RIBTEC for such designs is describedthat employs a functional (behavioral) fault model based ona class of non-exhaustive "universal" test sets. Given acircuit's high-level block structure, RIBTEC constructs auniversal test set for each block from its functionaldescription in such a way that realization-independence ofthe blocks is ensured. Experimental results are presented forrepresentative datapath circuits, which show that RIBTECachieves very high fault coverage and an exceptionally highlevel of realization independence.