PM5357 datasheet(43/432 Pages) PMC

43 / 432 page

PRODUCTION

S/UNI-622-POS

PMC-Sierra, Inc.

PM5357

S/UNI-622-POS

DATASHEET

PMC-1980911

ISSUE 5

SATURN USER NETWORK INTERFACE (622-POS)

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

9.5

ATM (UTOPIA) and Packet over SONET/SDH (POS) System Interface

Pin Name

Type

No.

Function

POS_

ATMB

Input

Y21

The physical layer select (POS_ATMB) pin selects

between the ATM and Packet over SONET/SDH

modes of operation.

When tied low, the device implements the ATM

physical layer. When tied high, the device

implements the Packet over SONET/SDH physical

layer.

This pin affects SONET/SDH mapping as well as the

pin definitions of the system interface bus and may be

overridden by software in the RUL3 and TUL3

registers.

SYSSEL

Input

AA23

The system interface select (SYSSEL) pin selects

between the 16-bit UTOPIA/POS-PHY Level 2 mode

and the 8-bit UTOPIA/POS-PHY Level 3 mode of the

system side interfaces for both ATM and Packet over

SONET/SDH operation.

When tied low, the 16-bit Level 2 mode is enabled.

When tied high, the 8-bit Level 3 mode is enabled.

This pin setting affects the pin definitions of the

system interface bus and may be overridden by

software in the RUL3 and TUL3 registers.

PM5357 Datasheet(PDF) 43 Page - PMC-Sierra, Inc

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