A mixed-mode BIST scheme based on folding compression
In this paper a new scheme for mixed mode scan-based BIST is presented with complete fault coverage, and some new concepts of folding set and computing are introduced. This scheme applies single feedback polynomial of LFSR for generating pseudo-random patterns, as well as for compressing and extending seeds of folding sets and an LFSR, where we encode seed of folding set as an initial seed of LFSR. Moreover these new techniques are 100% compatible with scan design. Experimental results show that the proposed scheme outperforms previously published approaches based on the reseeding of LFSRS.
bist folding set lfsr encoding seed random pattern testing