PM7346 datasheet(73/419 Pages) PMC

73 / 419 page

PM7346 S/UNI-QJET

DATASHEET

PMC-960835

ISSUE 6

SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3

PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND ITS CUSTOMERS’ INTERNAL USE 52

Pin Name

Type

Pin No.

Function

TMS

Input

Test Mode Select (TMS). This signal

controls the test operations that can be

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

Test Data Input (TDI). This signal carries

test data into the S/UNI-QJET 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

Output

Test Data Output (TDO). This signal

carries test data out of the S/UNI-QJET via

the IEEE P1149.1 test access port. TDO

is updated on the falling edge of TCK.

TDO is a tri-state output which is inactive

except when scanning of data is in

progress.

TRSTB

Input

Active low Test Reset (TRSTB). This signal

provides an asynchronous S/UNI-QJET

test access port reset via the IEEE

P1149.1 test access port. TRSTB is a

Schmitt triggered input with an integral pull

up resistor. TRSTB must be asserted

during the power up sequence.

Note that if not used, TRSTB must be

connected to the RSTB input.

BIAS

Input

H20

U17

+5V Bias (BIAS). When tied to +5V, the

BIAS input is used to bias the wells in the

input and I/O pads so that the pads can

tolerate 5V on their inputs without forward

biasing internal ESD protection devices.

When tied to VDD, the inputs and bi-

directional inputs will only tolerate input

levels up to VDD.

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