PM7347 datasheet(49/341 Pages) PMC

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S/UNI®-JET Data Sheet

Released

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

Document ID: PMC-1990267, Issue 3

Pin Name

Type

No.

Function

WRB

Input

The Active low Write Strobe (WRB) signal is pulsed low

to enable a S/UNI-JET register write access. The D[7:0]

bus is clocked into the addressed register on the rising

edge of WRB while CSB is low.

RDB

Input

The Active low Read Enable (RDB) signal is pulsed low

to enable a S/UNI-JET register read access. The S/UNI-

JET drives the D[7:0] bus with the contents of the

addressed register while RDB and CSB are both low.

D[7]

D[6]

D[5]

D[4]

D[3]

D[2]

D[1]

D[0]

I/O

D12

C13

A14

B14

D13

C14

A15

B15

The Bi-directional Data Bus (D[7:0]) is used during

S/UNI-JET register read and write accesses.

A[10]

A[9]

A[8]

A[7]

A[6]

A[5]

A[4]

A[3]

A[2]

A[1]

A[0]

Input

B10

C10

A11

B11

C11

D11

A12

B12

C12

B13

The Address Bus (A[10:0]) selects specific registers

during S/UNI-JET register accesses.

RSTB

Input

The Active low Reset (RSTB) signal is set low to

asynchronously reset the S/UNI-JET. RSTB is a Schmitt-

trigger input with an integral pull-up resistor.

ALE

Input

The Address Latch Enable (ALE) is active-high and

latches the address bus A[10:0] when low. When ALE is

high, the internal address latches are transparent. It

allows the S/UNI-JET to interface to a multiplexed

address/data bus. ALE has an integral pull-up resistor.

INTB

Output

The Active low Open-Drain Interrupt (INTB) signal goes

low when an unmasked interrupt event is detected on

any of the internal interrupt sources. Note: The INTB will

remain low until all active, unmasked interrupt sources

are acknowledged at their source.

TCK

Input

The Test Clock (TCK) signal provides timing for test

operations that can be carried out using the IEEE

P1149.1 test access port.

TMS

Input

The Test Mode Select (TMS) 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

The Test Data Input (TDI) signal carries test data into the

S/UNI-JET via the IEEE P1149.1 test access port. TDI is

sampled on the rising edge of TCK. TDI has an integral

pull up resistor.

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