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Measuring deep metastability

Lookup NU author(s): Professor David Kinniment, Keith Heron, Dr Gordon Russell


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Present measurement techniques do not allow synchronizer reliability to be measured in the region of most interest, that is, beyond the first half cycle of the synchronizer clock. We describe methods of extending the measurement range, in which the number of metastable events generated is increased by four orders of magnitude, and events with long metastable times are selected from the large number of more normal events, The relationship found between input times and the resulting output times is dependent on accurate measurement of input time distributions with deviations of less than 10ps, We show how the distribution of D to Clock times at the input can be characterised in the presence of noise, and how predictions of failure rates for long synchronizer times can be made, Anomalies such as the increased failure rates in a master slave synchronizer produced by the back edge of the clock are measured. © 2006 IEEE.

Publication metadata

Author(s): Kinniment D, Heron K, Russell G

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 12th IEEE International Symposium on Asynchronous Circuits and Systems

Year of Conference: 2006

Pages: 2-11

ISSN: 1522-8681

Publisher: IEEE


DOI: 10.1109/ASYNC.2006.21

Library holdings: Search Newcastle University Library for this item

ISBN: 0769524982