New High Speed CMOS Self-Checking Voter

Authors:
Jose Manuel Cazeaux;Daniele Rossi;Cecilia Metra
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
Venue:
IOLTS '04 Proceedings of the International On-Line Testing Symposium, 10th IEEE
Year:
2004

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Self-Checking Voter for High Speed TMR Systems

Journal of Electronic Testing: Theory and Applications
Dependable ≠ unaffordable

Proceedings of the 1st workshop on Architectural and system support for improving software dependability

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Abstract

Faults possibly affecting voters of TMR systems, employedin high reliability applications, can make them providethe fan-out logic with incorrect data, hence making theadoption of the TMR technique useless. In this paper we instantiatethe need for self-checking voters and we proposea new self-checking voting scheme that, compared to alternateself-checking solutions, features the advantage of beingfaster, while requiring comparable power consumption.This is achieved at the cost of a small increase in area overhead.