The CN8380 is a fully integrated quad line interface unit for both 1.544 Mbps (T1) and 2.048 Mbps (E1) applications. It is designed to complement T1/E1 framers or operate as a stand-alone line interface to synchronous or plesiochronous mappers and multiplexers.

Distinguishing Features

? Four T1/E1 short haul line interfaces in a single chip

? On-chip CLAD /system synchronizer

? Digital (crystal-less) jitter attenuators selectable for transmitter/receiver on each line interface

? Meets AT&T pub 62411 jitter specs

? Meets ITU G.703, ETS 300 011 (PSTNX) Connections

? AMI/B8ZS/HDB3 line codes

? Host serial port or hardware only control modes

? On-chip receive clock recovery

? Common transformers for 120/75 ? E1 and 100 ? T1

? Low-power 3.3 V power supply

? Transmitter performance monitor

? Compatible with latest ANSI, ITU-T, and ETSI standards

? 128-pin MQFP package

? Remote and local loopbacks

Applications

? SONET/SDH multiplexers

? T3 and E3/E4 (PDH) multiplexers

? ATM multiplexers

? Voice compression and voice processing equipment

? WAN routers and bridges

? Digital loop carrier terminals (DLC)

? HDSL terminal units

? Remote concentrators

? Central office equipment

? PBXs and rural switches

? PCM/voice channel banks

? Digital access and cross-connect systems (DACS)