Analysis of Test Application Time for Test Data Compression Methods Based on Compression Codes

  • Authors:
  • Anshuman Chandra;Krishnendu Chakrabarty

  • Affiliations:
  • Synopsys, Inc., 700 E. Middlefield Rd., Mountain View, CA 94043, USA. anshuman@synopsys.com;Department of Electrical and Computer Engineering, Duke University, 130 Hudson Hall, Box 90291, Durham, NC 27708, USA

  • Venue:
  • Journal of Electronic Testing: Theory and Applications
  • Year:
  • 2004

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Abstract

We present an analysis of test application time for test data compression techniques that are used for reducing test data volume and testing time in system-on-a-chip (SOC) designs. These techniques are based on data compression codes and on-chip decompression. The compression/decompression scheme decreases test data volume and the amount of data that has to be transported from the tester to the SOC. We show via analysis as well as through experiments that the proposed scheme reduces testing time and allows the use of a slower tester. Results on test application time for the ISCAS'89 circuits are obtained using an ATE testbench developed in VHDL to emulate ATE functionality.