PMC-Sierra PM5349 manual Jtag Test Access Port TAP Signals Pin Name Type Function

Models: PM5349

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PMC-Sierra, Inc.

S/UNI-QUAD

DATASHEET

PM5349 S/UNI-QUAD

PMC-971239

ISSUE 6

SATURN USER NETWORK INTERFACE (155-QUAD)

 

 

 

9.4JTAG Test Access Port (TAP) Signals

Pin Name

Type

Pin

Function

 

 

No.

 

 

 

 

 

TCK

Input

B8

The test clock (TCK) signal provides timing for test

 

 

 

operations that are carried out using the IEEE

 

 

 

P1149.1 test access port.

 

 

 

 

TMS

Input

B9

The test mode select (TMS) signal controls the test

 

pull-up

 

operations that are carried out using the IEEE

 

 

 

P1149.1 test access port. TMS is sampled on the

 

 

 

rising edge of TCK. TMS has an integral pull-up

 

 

 

resistor.

 

 

 

 

TDI

Input

D10

The test data input (TDI) signal carries test data into

 

pull-up

 

the S/UNI-QUAD via the IEEE P1149.1 test access

 

 

 

port. TDI is sampled on the rising edge of TCK. TDI

 

 

 

has an integral pull-up resistor.

 

 

 

 

TDO

Tristate

A9

The test data output (TDO) signal carries test data

 

 

 

out of the S/UNI-QUAD 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

C9

The active-low test reset (TRSTB) signal provides

 

pull-up

 

an asynchronous S/UNI-QUAD test access port

 

 

 

reset via the IEEE P1149.1 test access port.

 

 

 

TRSTB is a Schmitt triggered input with an integral

 

 

 

pull-up resistor.

 

 

 

Note that when not being used, TRSTB must be

 

 

 

connected to the RSTB input.

 

 

 

 

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

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PMC-Sierra PM5349 manual Jtag Test Access Port TAP Signals Pin Name Type Function