B.9. INTEST wrapper signals

Table B.8 describes the ARM946E-S INTEST wrapper signals.

Table B.8. INTEST wrapper signals

Name

Direction

Description

INnotEXTEST

Input

Selects between INTEST and EXTEST mode of the INTEST wrapper scan chain.

SI

Input

Serial input data for the INTEST wrapper scan chain.

SO

Output

Serial output data from the INTEST wrapper scan chain.

SCANEN

Input

Enables scanning of data through the INTEST wrapper scan chain.

TESTEN

Input

Selects the INTEST wrapper scan chain as the source for ARM946E-S inputs.

SERIALEN

Input

Enables the INTEST wrapper BIST activation mode where the scan chain applies serialized ARM instructions to the ARM946E-S to activate BIST test of the tightly-coupled SRAM.

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