DMCA
A Highly Regular Multi-Phase Reseeding Technique for Scan-based BIST†
BibTeX
@MISC{Kalligeros_ahighly,
author = {E. Kalligeros and X. Kavousianos and D. Nikolos},
title = {A Highly Regular Multi-Phase Reseeding Technique for Scan-based BIST†},
year = {}
}
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Abstract
In this paper a novel reseeding architecture for scan-based BIST, which uses an LFSR as TPG, is proposed. Multiple cells of the LFSR are utilized as sources for feeding the scan chain in different test phases. The LFSR generates the same state sequence in all phases, keeping that way the implementation cost low. Also, a dynamic reseeding scheme is adopted for further reducing the required hardware overhead. A seed-selection algorithm is moreover presented that, taking advantage of the multi-phase architecture, manages to reduce the number of the required seeds for achieving complete (100 %) fault coverage. Experimental results demonstrate the superiority of the proposed LFSR reseeding approach over the already known reseeding techniques.
Keyphrases
scan-based bist highly regular multi-phase reseeding technique experimental result novel reseeding architecture state sequence dynamic reseeding scheme seed-selection algorithm implementation cost required hardware overhead fault coverage multi-phase architecture scan chain different test phase multiple cell required seed
