PM7341 datasheet(23/413 Pages) PMC

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PRELIMINARY

INVERSE MULTIPLEXING OVER ATM

PM7341 S/UNI-IMA-84

DATASHEET

PMC-2000223

ISSUE 4

INVERSE MULTIPLEXING OVER ATM

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

FEATURES

The PM7341 S/UNI-IMA-84 is a monolithic integrated circuit that implements the

ATM Forum Inverse Multiplexing for ATM (IMA 1.1) protocol with backward

compatibility to IMA 1.0 and the Transmission Convergence (TC) layer function.

The S/UNI-IMA-84 has two line side interface modes that determine the total

number of physical links supported: the Scalable Bandwidth Interconnect (SBI)

bus interface mode and the Clock and Data interface mode.

In SBI mode, the S/UNI-IMA-84 supports up to 84 T1, 63 E1 or 3 DS3 (TC only)

physical links where each link is dynamically configurable to support either IMA

1.1, backward compatible IMA 1.0, ATM over T1/E1 or up to three ATM over DS3

streams (using HEC delineation).

In Clock and Data mode, the S/UNI-IMA-84 supports 32 independent T1, E1 or

unchannelized physical links. Each link is dynamically configurable to support

either IMA 1.1, backward compatible IMA 1.0, or ATM HEC cell delineation. ATM

over fractional T1/E1 is also supported. Unchannelized links may be used to

support applications such as G.SHDSL.

Standards Supported

• ATM Forum Inverse Multiplexing for ATM Specification Version 1.1, March

1999

• ATM Forum Inverse Multiplexing for ATM Specification Version 1.0 – supports

the method of reporting Rx cell information as in Appendix C.8 of the ATM

Forum Inverse Multiplexing for ATM Specification Version 1.1 for symmetrical

configurations with M=128.

• I.432-1 B-ISDN user network interface – Physical Layer specification: General

characteristics

• I.432-3 B-ISDN user network interface – Physical Layer specification: 1544

kbps and 2048 kbps operation

• DS3 Physical Layer Interface Specification, af-phy-0054.000 January, 1996

• ATM on Fractional E1/T1, af-phy-0130.00 October, 1999.

PM7341 Datasheet(PDF) 23 Page - PMC-Sierra, Inc