Presentation 2011-01-17
A Heuristic Method using CODCs for Extraction of Maximum Observability Don't Care Set
Taiga TAKATA, Yusuke MATSUNAGA,
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Abstract(in English) Sets of observability don't cares (ODCs) can be employed for multi-level logic optimization or propagation analysis of pulses assumed to be caused by soft errors. Larger set of ODCs is required to maximize the space of logic optimization or analyze pulse propagations more accurately. However, computing the maximum set of ODCs (MODC) consumes linear time for the square of a circuit scale. On the other hand, a set of compatible sets of ODCs (CODC) is known as a set of subsets of MODC which can be calculated in linear time for a circuit scale. CODC depends on a priority order for nodes which is determined during CODC computation. This paper shows a method to compute an approximate MODC for each node in linear time for a circuit scale. The method calculates several CODCs with variant priority orders, and calculates the union of CODCs as an approximate MODC. In experiments to estimate soft error rate of combinational circuits, the estimated soft error rate based on the approximate MODCs is only 3.4% larger than the exact soft error rate. Some improvements, however, are required for the proposed method to run in short run-time.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Logic optimization / soft error / SEU / don't care / CODC
Paper # VLD2010-91,CPSY2010-46,RECONF2010-60
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Committee RECONF
Conference Date 2011/1/10(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Heuristic Method using CODCs for Extraction of Maximum Observability Don't Care Set
Sub Title (in English)
Keyword(1) Logic optimization
Keyword(2) soft error
Keyword(3) SEU
Keyword(4) don't care
Keyword(5) CODC
1st Author's Name Taiga TAKATA
1st Author's Affiliation Faculty of Information Science and Electrical Engineering, Kyushu University()
2nd Author's Name Yusuke MATSUNAGA
2nd Author's Affiliation Faculty of Information Science and Electrical Engineering, Kyushu University
Date 2011-01-17
Paper # VLD2010-91,CPSY2010-46,RECONF2010-60
Volume (vol) vol.110
Number (no) 362
Page pp.pp.-
#Pages 6
Date of Issue