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13th Asian Test Symposium (2004)
Kenting, Taiwan
Nov. 15, 2004 to Nov. 17, 2004
ISSN: 1081-7735
ISBN: 0-7695-2235-1
pp: 20-23
Aristides Efthymiou , University of Manchester
John Bainbridge , University of Manchester
Douglas A. Edwards , University of Manchester
Asynchronous circuits offer great potential for solving the interconnect problems faced by system-on-chip designers, but their adoption has been held back by a lack of methodology and support for fabrication testing of such circuits. This paper addresses this problem using a partial scan approach which achieves a test coverage of 99.5% on the CHAIN network-on-chip interconnect fabric which is used as an example. Test patterns are generated by a custom program automatically, given the topology of the interconnect. In comparison to standard, asynchronous, full-scan LSSD methods, area savings in the order of 50% are noted.

A. Efthymiou, D. A. Edwards and J. Bainbridge, "Adding Testability to an Asynchronous Interconnect for GALS SoC," 13th Asian Test Symposium(ATS), Kenting, Taiwan, 2004, pp. 20-23.
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