PM8621 datasheet(30/184 Pages) PMC

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NSE-8G™ Standard Product Data Sheet

Preliminary

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

Document ID: PMC-2010850, Issue 1

Pad Name

Type

Pin No.

Function

ALE

Input

AL30

Address Latch Enable. The address latch enable signal

(ALE) is active high and latches the address bus

(A[11:0]) when it is set low. The internal address latches

are transparent when ALE is set high. ALE allows the

NSE-8G to interface to a multiplexed address/data bus.

ALE has an integral pull up resistor.

INTB

Open Drain

Output

AN30

Interrupt Request Bar. The active low interrupt enable

signal (INTB) output goes low when an NSE-8G interrupt

source is active and that source is unmasked. INTB

returns high when the interrupt is acknowledged via an

appropriate register access. INTB is an open drain

output.

JTAG Port (5 Balls)

TCK

Input

B14

Test Clock. The JTAG test clock signal (TCK) provides

timing for test operations that are carried out using the

IEEE P1149.1 test access port.

TMS

Input

B13

Test Mode Select. The JTAG test mode select signal

(TMS) controls the test 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

C12

Test Data Input. The JTAG test data input signal (TDI)

carries test data into the NSE-8G 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

Tri-state

C11

Test Data Output. TheJTAG test data output signal

(TDO) carries test data out of the NSE-8G 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

D14

Test Reset Bar. The active low JTAG test reset signal

(TRSTB) provides an asynchronous NSE-8G 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 TRSTB is not being used, it must be

connected to the RSTB input.

PM8621 Datasheet(PDF) 30 Page - PMC-Sierra, Inc

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