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參數(shù)資料
| 型號： | XRT82D20 |
| 廠商： | Exar Corporation |
| 英文描述： | Single Channel E1 Line Interface Unit(單通道E1線接口單元) |
| 中文描述： | 單通道E1線路接口單元（單通道素E1線接口單元） |
| 文件頁數(shù)： | 1/22頁 |
| 文件大?。?/td> | 236K |
| 代理商： | XRT82D20 |
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
á
XRT82D20
SINGLE CHANNEL E1 LINE INTERFACE UNIT
OCTOBER 2000
REV. 1.0.6
GENERAL DESCRIPTION
The XRT82D20 is a fully integrated, single channel,
line interface Transceiver for 75
or 120
E1 (2.048
Mbps) applications. The LIU IC consists of a receiver
with adaptive data slicer for accurate data and clock
recoveries and a transmitter which accepts either sin-
gle or dual-rail digital input for signal transmission to
the line using a low- impedance differential line driver.
The device also includes a crystal-less jitter attenua-
tor for clock and data smoothing which, depending on
system requirements, can be selected in either the
transmit or receive path.
Coupling the XRT82D20 to the line requires trans-
formers on both the Receiver and Transmitter sides,
and supports both balanced and unbalanced interfac-
es.
FEATURES
Complete E1 (CEPT) line interface unit
Pin Compatible with the XRT7288
Generates transmit output pulses that are compli-
ant with the ITU-T G.703 Pulse Template for
2.048Mbps (E1) rates
On-Chip Pulse Shaping for both 75
and 120
Line Drivers
Clock Recovery and Selectable Crystal-less Jitter
attenuator
Compliant with ETS300166 Return Loss
Compliant with the ITU-T G.823 Jitter Tolerance
Requirements
Supports Remote, Local and Digital Loop back
Operations
Declares and Clears the LOS per ITU-T G.775
Logic Inputs accept either 3.3V or 5.0V levels
Operates over -40
0
C to 85
0
C Temperature Range
Ultra Low Power Dissipation
+3.3V or +5V Supply Operation
APPLICATIONS
PDH Multiplexers
SDH Multiplexers
Digital Cross-Connect Systems
DECT (Digital European Cordless Telephone) Base
Stations
CSU/DSU Equipment.
Test Equipment
F
IGURE
1. B
LOCK
D
IAGRAM
OF
THE
XRT82D20
HDB3
Encoder
Peak
Detector
Local
Loopback
LOS
Detect
Data
Slicer
Data &
Timing
Recovery
Remote
Loopback
HDB3
Decoder
Digital
Loopback
Tx Pulse
Shaper
MUX
MUX
Line
Driver
TClk
TPOS
TNEG
RClk
RPOS
RNEG
TTIP
TRing
RLOS
RTIP
RRing
MClk
Timing
Generator
Jitter Attenuator
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT82L24IV | QUAD E1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT82L24 | Quad E1 Line Transceiver with Clock Recovery and Jitter Attenuator(四E1線收發(fā)器（帶時鐘恢復(fù)和振動衰減器）) |
| XRT82L34 | Quad T1/E1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(四 T1/E1/J1線收發(fā)器（帶時鐘恢復(fù)和振蕩衰減器）) |
| XRT82L38 | Octal E1/T1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(八 T1/E1/J1線收發(fā)器（帶時鐘恢復(fù)和振蕩衰減器）) |
| XRT83D10 | SINGLE CHANNEL DS1/CEPT LINE INTERFACE UNIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT82D20_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL E1 LINE INTERFACE UNIT |
| XRT82D20ES | 功能描述:外圍驅(qū)動器與原件 - PCI 1 CH E1 LIU RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT82D20IW | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Single Ch E1 LIU RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT82D20IW-F | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Single Ch; 3.3V-5V temp -45 to 85C RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT82D20IW-F | 制造商:Exar Corporation 功能描述:T1/E1 LIU IC |
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