Checker No-Harm Alarm Robustness

Authors:
Daniele Rossi;Martin x. Martin Omana;Cecilia Metra;Andrea Pagni
Affiliations:
D.E.I.S. University of Bologna, Italy;D.E.I.S. University of Bologna, Italy;D.E.I.S. University of Bologna, Italy;STMicroelectronics, Italy
Venue:
IOLTS '06 Proceedings of the 12th IEEE International Symposium on On-Line Testing
Year:
2006

Citing 0
Cited 2

Checkers' No-Harm Alarms and Design Approaches to Tolerate Them

Journal of Electronic Testing: Theory and Applications
False Error Vulnerability Study of On-line Soft Error Detection Mechanisms

Journal of Electronic Testing: Theory and Applications

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Abstract

In this paper we evaluate the probability that a transient fault (TF), multiple or single, affecting a checker of a self-checking circuit, gives rise to an unnecessary error indication (no-harm alarm). A new property (noharm alarm robustness) has been defined that, in case of a fault affecting a self-checking circuit (SCC), guarantees that we can determine whether the fault is affecting the functional block, or the checker itself, and whether such a fault is a transient or a permanent fault. Finally, we propose a possible solution implementing the defined property. Its behavior has been verified by means of HSpice simulations, and we evaluate its cost in terms of area overhead and introduced delay.