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Efficient test generation with maximal crosstalk-induced noise using unconstrained aggressor excitation

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3 Author(s)
Eggersgluss, S. ; Inst. of Comput. Sci., Univ. of Bremen, Bremen, Germany ; Tille, D. ; Drechsler, R.

The influence of crosstalk noise grows as the feature sizes in modern designs decrease. Crosstalk-induced effects are able to cause major timing violations, especially if multiple aggressors affect certain lines. However, conventional Automatic Test Pattern Generation (ATPG) algorithms for delay test do not consider these effects during test generation. This increases the possibility that chips which passed the testing phase might fail due to crosstalk-induced effects. In this paper, we propose a new efficient ATPG approach for generating delay tests considering crosstalk-induced effects using Boolean Satisfiability (SAT). Previous approaches used a two-step procedure to increase the crosstalk-induced noise. As a result, the search space is highly restricted. In contrast, the proposed approach is able to do test generation and excite multiple aggressors in one step. By this, more aggressor combinations can be found and the generated test potentially induce more crosstalk noise on the victim. In order to maximize the crosstalk-induced effects of the test, an exact branch-and-bound algorithm and a static aggressor ordering heuristic are applied and compared. Experimental results demonstrate the efficiency and effectiveness of the approach.

Published in:

Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on

Date of Conference:

May 30 2010-June 2 2010

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