Title: Online Test Vector Insertion: A Concurrent Built-In Self-Testing (CBIST) Approach for Asynchronous Logic
Language: English
Authors: Maier, Jürgen  
Steininger, Andreas  
Issue Date: 2014
Maier, J., & Steininger, A. (2014). Online Test Vector Insertion: A Concurrent Built-In Self-Testing (CBIST) Approach for Asynchronous Logic. In 17th International Symposium on Design and Diagnostics of Electronic Circuits Systems / Pleskacz, Witold; Renovell, Michel; Kasprowicz, Dominik; Sekanina, Lukáš; Bernard, Serge. Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/DDECS.2014.6868759
Complementing concurrent checking with online testing is crucial for preventing fault accumulation in fault-tolerant systems with long mission times. While implementing a non-intrusive online test is cumbersome in a synchronous environment, this task becomes even more challenging in asynchronous designs. The latter receive increasing attention, mainly due to their elastic timing behaviour; however the issues related with their testing remain a key obstacle for their wide adoption. In this paper we present a novel approach for testing of asynchronous circuits that leverages the redundancy present in the conventional 4-phase protocol for implementing a fully transparent and fully concurrent test procedure. The key idea is to use the protocol's unproductive NULL phase for processing test vectors, thus effectively interleaving the incoming 4-phase data stream with a test data stream in a 2-phase fashion. We present implementation templates for the fundamental building blocks required and give a proof-of-concept by an example application that also serves as a platform for evaluating the overheads of our solution which turn out to be moderate.
Keywords: Asynchronous Logic
URI: https://resolver.obvsg.at/urn:nbn:at:at-ubtuw:3-9942
Library ID: AC15661832
ISBN: 9781479945580
Organisation: E191 - Institut für Computer Engineering 
Publication Type: Inproceedings
Appears in Collections:Conference Paper

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