Logic built in self test circuitry for use in an integrated circuit with scan chains

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United States of America Patent

PATENT NO 10746794
APP PUB NO 20170192057A1
SERIAL NO

15180281

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Abstract

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Aspects include a method for logic built-in self-testing (LBIST) for use in an integrated circuit with scan chains. The method includes programming a product control generator and a pattern generator with an LBIST pattern comprising at least a number of loops. The LBIST pattern is executed by generating scan-in test values for scan chains with the pattern generator and controlling at least one test parameter with the product control generator. Scan-out responses are collected from the scan chains in a signature register, and a start request is received from a chip tester. The LBIST is started in response to the start request. Test summary data is reported to the chip tester before the whole number of loops has been executed.

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Patent Owner(s)

  • IBM CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bhamidipati, Satya R S Akividu, IN 7 5
Gopalakrishnasetty, Raghu G Bangalore, IN 20 32
Kusko, Mary P Poughkeepsie, US 78 381
Lichtenau, Cedric Boeblingen, DE 119 280

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