PM7384 datasheet(39/358 Pages) PMC

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PM7384 FREEDM-84P672

DATA SHEET

PMC-1990445

ISSUE 5

FRAME ENGINE AND DATA LINK MANAGER 84P672

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

Pin Name

Type

No.

Function

TDO

Tristate

Output

The test data output signal (TDO) carries test

data out of the FREEDM-84P672 via the IEEE

P1149.1 test access port. TDO is updated on the

falling edge of TCK. TDO is a tristate output

which is inactive except when scanning of data is

in progress.

TRSTB

Input

The active low test reset signal (TRSTB) provides

an asynchronous FREEDM-84P672 test access

port reset via the IEEE P1149.1 test access port.

TRSTB is an asynchronous input with an integral

pull up resistor.

Note that when TRSTB is not being used, it must

be connected to the RSTB input.

NC1-152

Open

These pins must be left unconnected.

Table 5 – Production Test Interface Signals (31)

Pin Name

Type

No.

Function

TA[0]

TA[1]

TA[2]

TA[3]

TA[4]

TA[5]

TA[6]

TA[7]

TA[8]

TA[9]

TA[10]

TA[11]

Input

The test mode address bus (TA[11:0]) selects

specific registers during production test

(PMCTEST set high) read and write accesses.

In normal operation (PMCTEST set low), these

signals should be grounded.

TA[12]/TR

Input

The test register select signal (TA[12]/TRS)

selects between normal and test mode register

accesses during production test (PMCTEST set

high). TRS is set high to select test registers

and is set low to select normal registers. In

normal operation (PMCTEST set low), this

signal should be grounded.

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