Unknown Blocking Scheme for Low Control Data Volume and High Observability

Provided by: edaa
Topic: Hardware
Format: PDF
In this paper, the authors present a new blocking logic to block unknowns for temporal compactors. The proposed blocking logic can reduce data volume required to control the blocking logic and also increase the number of scan cells that are observed by the temporal compactors. Control patterns, which describe values required at the control signals of the blocking logic, are compressed by LFSR reseeding. In this paper, the blocking logic gates for some groups of scan chains that do not capture unknowns are bypassed.

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