PM5348 datasheet(41/238 Pages) PMC

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PM5348 S/UNI-DUAL

DATA SHEET

PMC-950919

ISSUE 7

SATURN USER NETWORK INTERFACE

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

Pin Name

Type

No.

Function

A[0]

A[1]

A[2]

A[3]

A[4]

A[5]

A[6]

A[7]

Input

The address bus A[8:0] selects specific

registers during S/UNI-DUAL register

accesses.

A[8]/TRS

The test register select (TRS) signal selects

between normal and test mode register

accesses. TRS is high during test mode

mode register accesses.

RSTB

Input

The active low reset (RSTB) signal provides

an asynchronous S/UNI-DUAL reset. RSTB

is a Schmitt triggered input with an integral

pull up resistor.

ALE

Input

The address latch enable (ALE) is active

high and latches the address bus A[8:0]

when low. When ALE is high, the internal

address latches are transparent. It allows

the S/UNI-DUAL to interface to a multiplexed

address/data bus. ALE has an integral pull

up resistor.

INTB

Open-

Drain

Output

125

The active low interrupt (INTB) signal goes

low when a S/UNI-DUAL interrupt source is

active, and that source is unmasked. The

S/UNI-DUAL may be enabled to report many

alarms or events via interrupts. INTB

returns tristate when the interrupt is

acknowledged via an appropriate register

access.

PM5348 Datasheet(PDF) 41 Page - PMC-Sierra, Inc

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