XRT83SL216 Просмотр технического описания (PDF) - Exar Corporation

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XRT83SL216

16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT

Exar Corporation 

XRT83SL216

16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT

AUGUST 2006

REV. 1.0.0

GENERAL DESCRIPTION

The XRT83SL216 is a fully integrated 16-channel E1

short-haul LIU which optimizes system cost and

performance by offering key design features. The

XRT83SL216 operates from a single 3.3V power

supply. The LIU features are programmed through a

standard serial microprocessor interface. EXAR’s LIU

has patented high impedance circuits that allow the

transmitter outputs and receiver inputs to be placed in

a high impedance mode when experiencing a power

failure or when the LIU is powered off. Additional

features include TAOS for transmit and receive,

RLOS, LCV, on chip Jitter Attenuator, AIS detector,

and diagnostic loopback modes.

APPLICATIONS

• ISDN Primary Rate Interface

• CSU/DSU E1 Interface

• E1 LAN/WAN Routers

• Public Switching Systems and PBX Interfaces

• E1 Multiplexer and Channel Banks

• Integrated Multi-Service Access Platforms (IMAPs)

• Integrated Access Devices (IADs)

• Inverse Multiplexing for ATM (IMA) Wireless Base

Stations

FIGURE 1. BLOCK DIAGRAM OF THE XRT83SL216

TCLK

TPOS

TNEG

RCLK

RPOS

RNEG/LCV

1 of 16 Channels

HDB3

Encoder

Timing

Control

Remote

Loopback

Jitter

Attenuator

(Rx or Tx)

Digital

Loopback

HDB3

Decoder

Clock & Data

Recovery

Tx Pulse

Shaper

Peak

Detector

& Slicer

Line

Driver

Analog

Loopback

Rx

Equalizer

TTIP

TRING

RTIP

RRING

RLOS

TDI

TMS

TCK

JTAG

AIS & LOS

Detector

Serial Microprocessor

Interface

Internal Clock Generator

JASEL0

JASEL1

TxOE

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

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