A new framework for designing and analyzing BIST techniques: computation of exact aliasing probability

A coding theory framework is developed for analysis and synthesis of compression techniques in the built-in self test (BIST) environment. Using this framework, exact expressions are derived for the linear feedback shift register aliasing probability. These are shown to be more accurate than earlier ones. Also shown is that there exist compression techniques for which the aliasing probability can be reduced to zero asymptotically. An error model is presented that incorporates the effects of faults on output response. It is shown that the coding theory framework correlates well with this proposed error model. A signature analysis technique is presented, which achieves smaller aliasing probability than other recently proposed schemes.<
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