BIST-Based Diagnosis of FPGA Interconnect

  • Authors:
  • Charles Stroud;Jeremy Nall;Matthew Lashinsky;Miron Abramovici

  • Affiliations:
  • -;-;-;-

  • Venue:
  • ITC '02 Proceedings of the 2002 IEEE International Test Conference
  • Year:
  • 2002

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Abstract

We present a Built-In Self-Test (BIST)-based diagnostic approach for the programmable interconnect resources in Field Programmable Gate Arrays (FPGAs) that can be used for either on-line or off-line testing. The technique was originally intended for on-line diagnosis of faultyinterconnect to support fault-tolerant applications. However, the technique has been proven to be an excellent approach for off-line testing and diagnosis as well, providing high-resolutiondiagnostics with the ability to identify the faulty wire segment or programmable switch. We have implemented this BIST-based diagnostic approach on the ORCA series FPGA and present the results of testing and diagnosing known defective FPGAs.1