PM7367 datasheet(38/323 Pages) PMC

38 / 323 page

PM7367 FREEDM-32P32

DATA SHEET

PMC-1991499

ISSUE 2

FRAME ENGINE AND DATA LINK MANAGER

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

Pin Name

Type

No.

Function

TDO

Tristate

Output

The test data output signal (TDO) carries test

data out of the FREEDM-32P32 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

The active low test reset signal (TRSTB) provides

an asynchronous FREEDM-32P32 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.

VBIAS[3:1] Input

B19

W19

The bias signals (VBIAS[3:1]) provide 5 Volt bias

to input and I/O pads to allow the FREEDM-

32P32 to tolerate connections to 5 Volt devices.

To avoid damage to the device, the VBIAS[3:1]

signals must be connected together externally

and must at all times be kept at a voltage that is

equal to or higher than the VDD[28:1] power

supplies. In a 3.3V operating environment,

VBIAS[3:1] and VDD[28:1] may be connected

together. In a 5V operating environment,

VBIAS[3:1] should be powered up to 5V before

VDD[28:1] are powered up to 3.3V.

EN5V

Input

The 5 Volt PCI signalling enable signal (EN5V)

causes the PCI Host Interface Signals to operate

in the 5V PCI signalling environment when set

high and the 3.3V PCI signalling environment

when set low. EN5V is an asynchronous input

with an integral pull up resistor.

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