An Integrated Approach to Behavioral-Level Design-For-Testability Using Value-Range and Variable Testability Techniques

  • Authors:
  • Sandhya Seshadri;Michael S. Hsiao

  • Affiliations:
  • -;-

  • Venue:
  • ITC '99 Proceedings of the 1999 IEEE International Test Conference
  • Year:
  • 1999

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Abstract

This research applies formal data ow analysis and techniques to high-level DFT. Our proposed approach improvestestability of the behavioral-level circuit description (suchas in VHDL) based on propagation of the value ranges ofvariables through the circuit's Control-Data Flow Graph(CDFG). The resulting testable circuit is accomplished viacontrollability and observability computations from thesevalue ranges and insertion of appropriate testability enhancements, while keeping the design area-performanceoverhead to a minimum.