2003 IEEE International Conference on Computer Design (ICCD'03)
Automatic Generation of Critical-Path Tests for a Partial-Scan Microprocessor
San Jose, California
October 13-October 15
ISBN: 0-7695-2025-1
We present our experiences generating scan-based critical-path tests for the partial-scan Alpha 21364 microprocessor, including the effects of crosstalk and multiple-inputs switching on path delay. Insufficient scan penetration made this difficult[1], but a new ATPG algorithm increased our coverage. Comparison with actual silicon shows interesting results; we explain them with statistical analysis, factoring the effect of statistical process variation into the effects of crosstalk and multiple-input switching on delay. Finally, we draw conclusions about how to help make future designs amenable to speed testing.
Citation:
Joel Grodstein, Dilip Bhavsar, Vijay Bettada, Richard Davies, "Automatic Generation of Critical-Path Tests for a Partial-Scan Microprocessor," iccd, pp.180, 2003 IEEE International Conference on Computer Design (ICCD'03), 2003