PMC-Sierra, Inc.

PM5349 S/UNI-QUAD

 

S/UNI-QUAD

 

 

 

 

 

 

 

DATASHEET

 

 

 

 

 

 

 

 

 

 

 

 

PMC-971239

ISSUE 6

 

SATURN USER NETWORK INTERFACE (155-QUAD)

 

 

 

 

 

 

Pin Name

Type

Pin

Function

 

 

No.

 

 

 

 

 

A[10]/TRS

Input

A11

The test register select (TRS) signal selects

 

 

 

between normal and test mode register accesses.

 

 

 

TRS is high during test mode register accesses,

 

 

 

and is low during normal mode register accesses.

 

 

 

 

RSTB

Input

B10

The active-low reset (RSTB) signal provides an

 

pull-up

 

asynchronous S/UNI-QUAD reset. RSTB is a

 

 

 

Schmitt triggered input with an integral pull-up

 

 

 

resistor.

 

 

 

 

ALE

Input

C11

The address latch enable (ALE) is active-high and

 

pull-up

 

latches the address bus A[7:0] when low. When

 

 

 

ALE is high, the internal address latches are

 

 

 

transparent. It allows the S/UNI-QUAD to interface

 

 

 

to a multiplexed address/data bus. ALE has an

 

 

 

integral pull-up resistor.

 

 

 

 

INTB

Output

C10

The active-low interrupt (INTB) signal goes low

 

Open-

 

when a S/UNI-QUAD interrupt source is active and

 

drain

 

that source is unmasked. The S/UNI-QUAD may be

 

 

 

enabled to report many alarms or events via

 

 

 

interrupts.

 

 

 

Examples of interrupt sources are loss of signal

 

 

 

(LOS), loss of frame (LOF), line AIS, line remote

 

 

 

defect indication (LRDI) detect, loss of pointer

 

 

 

(LOP), path AIS, path remote defect indication

 

 

 

detect and others.

 

 

 

INTB is tristated when the interrupt is acknowledged

 

 

 

via an appropriate register access. INTB is an open

 

 

 

drain output.

 

 

 

 

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

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PMC-Sierra PM5349 manual Rstb, Ale, Intb