Lookup NU author(s): Professor David Kinniment,
Dr Oleg Maevsky,
Dr Alex Bystrov,
Dr Gordon Russell,
Professor Alex Yakovlev
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This paper describes the use of digitally set delay lines in conjunction with MUTEX time comparison circuits, to measure on-chip signal path timing differences to accuracies of better than 10ps. Three methods of time measurement are described. The first, which uses parallel MUTEXs with a tapped delay line, is analogous to a flash AID converter. The second one is similar to a successive approximation method. Both are fast, and efficient, but the second requires less hardware for a large number of bits. The third technique uses a MUTEX to amplify small time differences to a measurable size. Applications for these techniques include adaptive synchronization and input tests, such as data set-up time conditions that currently require the use of very expensive test hardware. We describe an on-chip method of testing these conditions, using uncorrelated signals whose statistics are known, and accurately selecting the conditions to be tested on-chip. (8 References).
Author(s): Kinniment DJ, Maevsky OV, Bystrov A, Russell G, Yakovlev A
Publication type: Conference Proceedings (inc. Abstract)
Conference Name: 8th International Symposium on Asynchronous Circuits and Systems (ASYNC 2002)
Year of Conference: 2002
Publisher: IEEE Computer Society
Notes: Los Alamitos, CA, USA.
Proceedings Eighth International Symposium on Asynchronous Circuits and Systems. Manchester, UK. IEEE Comput. Soc. Tech. Committee on VLSI. 8-11 April 2002.
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