PM6341 datasheet(51/272 Pages) PMC

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PM6341 E1XC

DATA SHEET

PMC-910419

ISSUE 8

E1 FRAMER/TRANSCEIVER

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

Pin No.

Pin Name

Type

PQFP

PLCC

Function

INTB

Output

Active low open-drain Interrupt signal

(INTB). This signal goes low when an

unmasked interrupt event is detected

on any of the internal interrupt

sources, including the internal HDLC

transceiver. Note that INTB will

remain low until all active, unmasked

interrupt sources are acknowledged at

their source.

CSB

Input

Active low chip select (CSB). This

signal must be low to enable E1XC

being used, CSB must be tied high. If

CSB is not required (i.e. register

accesses are controlled using the

RDB and WRB signals only), CSB

must be connected to an inverted

version of the RSTB input. In any

case, CSB must be high at least once

after a powerup in order to clear

internal test modes.

D[0]

D[1]

D[2]

D[3]

D[4]

D[5]

D[6]

D[7]

I/O

Bidirectional data bus (D[7:0]). This

bus is used during E1XC read and

write accesses.

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