Testing the Local Interconnect Resources of SRAM-Based FPGA's

  • Authors:
  • M. Renovell;J. M. Portal;J. Figueras;Y. Zorian

  • Affiliations:
  • LIRMM-UM2, 161 Rue Ada, 34392 Montpellier Cedex, France. renovell@lirmm.fr;LIRMM-UM2, 161 Rue Ada, 34392 Montpellier Cedex, France;UPC Diagonal, 647 Barcelona, Spain. figueras@eel.upc.es;Logic Vision Inc., 101 Metro Drive San Jose CA 95110, USA. zorian@lvision.com

  • Venue:
  • Journal of Electronic Testing: Theory and Applications - Special Issue on the 7th ASIAN TEST SYMPOSIUM, ATS-98
  • Year:
  • 2000

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Abstract

This paper addresses the problem of testing the configurable modules used in the local interconnect of SRAM-based FPGAs. First, it is demonstrated that a n address bit Configurable Interface Multiplexer requires N = 2n test configurations considering a stuck-at as well as a functional fault model. Second, a logic cell with a set of k input Configurable Interface Modules with n address bits is analyzed and it is proven that the set of CIMs can be tested in parallel making the number of required test configurations equal to N = 2n. Third, it is shown that the complete circuit i.e. a m × m array of sets of k Configurable Interface Multiplexers with n address bits can be tested with only N = 2n test configurations using the XOR tree and shift register structures.