Hierarchical test circuit structure for chips with multiple...

Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital logic testing

Reexamination Certificate

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C716S030000

Reexamination Certificate

active

06886121

ABSTRACT:
A hierarchical test control network for an integrated circuit includes a top-level test control circuit block having a chip access port (CAP) controller. The hierarchical test control network also has multiple lower-level test control circuit blocks connected to the top-level test control circuit block in a hierarchical structure. Each of the lower-level test control circuit blocks are a socket access port (SAP) controller. Test operation is transferred downward and upwards within said hierarchical structure.

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