Built-in self-test control network

Details Built-in self-test control network Built-in self-test control network

1993-06-23

1996-10-29

Beausoliel, Jr., Robert W.

Excavating

371 223, 371 224, G01R 3128

Patent

active

055703747

ABSTRACT:
Control of the self-testing of a plurality of elements (12.sub.1 -12.sub.m), each having a Built-In, Self-Test (BIST) capability, and arranged in one or more groups (14.sub.1 -14.sub.n), is carried out by a network (16) of one or more standard BIST resource interface controllers (SBRICs 18.sub.1 -18.sub.n). Each SBRIC in the network controls the self-testing of the elements in a separate one of the groups in sequence by broadcasting a test command to the elements in parallel which, in response, generate test signatures stored by the SBRIC. The SBRICs in the network are coupled in series in daisy chain fashion to enable the test signatures stored by the SBRICs to be concatenated for easy retrieval by shifting out the test signatures therefrom, using a technique such as boundary scan.

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patent: 5488615 (1996-01-01), Kunoff et al.

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