发明名称 |
SIGNATURE COMPRESSION REGISTER INSTABILITY ISOLATION AND STABLE SIGNATURE MASK GENERATION FOR TESTING VLSI CHIPS |
摘要 |
A method for detecting unstable signatures when testing a VLSI chip that includes adding to an LFSR one or more save and restore registers for storing an initial seed consisting of 0s and 1s; loading the initial seed into the one or more save and restoring LFSR registers upon reaching a predetermined number of test loops; performing a signature stability test by loading said initial seed to said LFSR, executing the predetermined number of BIST test loops, and comparing the resulting MISR signature for differences versus a previous signature stored in a MISR save and restore register. |
申请公布号 |
US2014006889(A1) |
申请公布日期 |
2014.01.02 |
申请号 |
US201213534444 |
申请日期 |
2012.06.27 |
申请人 |
MOTIKA FRANCO;KURTULIK RAYMOND J.;PARKER JOHN D.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
MOTIKA FRANCO;KURTULIK RAYMOND J.;PARKER JOHN D. |
分类号 |
G01R31/3177;G06F11/25 |
主分类号 |
G01R31/3177 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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