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Regaining throughput using completion detection for error-resilient, near-threshold logic

TitleRegaining throughput using completion detection for error-resilient, near-threshold logic
Publication TypeConference Paper
Year of Publication2012
AuthorsCrop, J., R. Pawlowski, and P. Y. Chiang
Conference NameProceedings of the 49th Annual Design Automation Conference - DAC '12
Pagination 974-979
Date Published06/2012
PublisherACM Press
Conference LocationSan Francisco, CA
ISBN Number9781450311991
Keywordscompletion detection, error detection, low power, variation tolerance
Abstract

Operating in the near-threshold regime can result in significant energy savings. Unfortunately, the increased timing variation prevents conventional error-detection techniques from properly functioning. This paper introduces two circuit-level timing error detection techniques that aim to increase throughput while operating in the near-threshold voltage regime: current-sensing completion detection and transition-aware completion detection. Each method allows any digital circuit to operate at speeds not limited by the worst-case critical path. Throughput improvements and energy savings are reported for implementations on a 16-bit adder.

DOI10.1145/2228360.2228535