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參數資料
| 型號： | XRT75L02IV |
| 廠商： | EXAR CORP |
| 元件分類： | 數字傳輸電路 |
| 英文描述： | TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PQFP100 |
| 封裝： | 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, QFP-100 |
| 文件頁數： | 1/50頁 |
| 文件大小： | 343K |
| 代理商： | XRT75L02IV |
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Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
xr
XRT75L02
TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
DECEMBER 2005
GENERAL DESCRIPTION
REV. 1.0.3
The XRT75L02 is a two-channel fully integrated Line
Interface Unit (LIU) with Jitter Attenuator for E3/DS3/
STS-1 applications. It incorporates independent
Receivers, Transmitters and Jitter Attenuators in a
single 100 pin TQFP package.
The XRT75L02 can be configured to operate in either
E3 (34.368 MHz), DS3 (44.736 MHz) or STS-1 (51.84
MHz) modes.The transmitter can be turned off (tri-
stated) for redundancy support and for conserving
power.
The XRT75L02’s differential receiver provides high
noise interference margin and is able to receive the
data over 1000 feet of cable or with up to 12 dB of
cable attenuation.
The XRT75L02 incorporates advanced crystal-less
jitter attenuators that can be selected either in the
transmit or receive path. The jitter attenuator
performance meets the ETSI TBR-24 and Bellcore
GR-499 specifications.
The XRT75L02 provides both Serial Microprocessor
Interface as well as Hardware mode for programming
and control.
The XRT75L02 supports local,remote and digital
loop-backs. The XRT75L02 also contains an on-
board Pseudo Random Binary Sequence (PRBS)
generator and detector with the ability to insert and
detect single bit error.
FEATURES
RECEIVER:
On chip Clock and Data Recovery circuit for high
input jitter tolerance.
Meets the jitter tolerance requirements as specified
in ITU-T G.823_1993 for E3 and Telcordia GR-499-
CORE for DS3 applications.
Detects and Clears LOS as per G.775.
Receiver Monitor mode handles up to 20 dB flat
loss with 6 dB cable attenuation.
On chip B3ZS/HDB3 encoder and decoder that can
either be enabled or disabled.
On-chip
clock
synthesizer
appropriate rate clock from a single frequency
XTAL.
generates
the
Provides low jitter clock outputs for either DS3,E3
or STS-1 rates.
On-chip clock synthesizer provides the appropriate
rate clock from a single 12.288 MHz Clock.
Provides low jitter output clock.
TRANSMITTER:
Compliant with Bellcore GR-499, GR-253 and ANSI
T1.102 Specification for transmit pulse
Tri-state Transmit output capability for redundancy
applications
Transmitters can be turned on or off.
JITTER ATTENUATOR:
On chip advanced crystal-less Jitter Attenuator.
Jitter Attenuator can be selected in Receive or
Transmit paths.
16 or 32 bits selectable FIFO size.
Meets the Jitter and Wander specifications
described in T1.105.03b,ETSI TBR-24, Bellcore
GR-253 and GR-499 standards.
Jitter Attenuators can be disabled.
CONTROL AND DIAGNOSTICS:
5 wire Serial Microprocessor Interface for control
and configuration.
Supports
optional
internal
Monitoring.
PRBS error counter register to accumulate errors.
Hardware Mode for control and configuration.
Supports Local, Remote and Digital Loop-backs.
Single 3.3 V ± 5% power supply.
5 V Tolerant I/O.
Available in 100 pin TQFP.
-40°C to 85°C Industrial Temperature Range.
Transmit
Driver
APPLICATIONS
E3/DS3 Access Equipment.
STS1-SPE to DS3 Mapper.
DSLAMs.
Digital Cross Connect Systems.
CSU/DSU Equipment.
Routers.
Fiber Optic Terminals.
相關PDF資料 |
PDF描述 |
|---|---|
| XRT75L03D | THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L04D | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L04DIV | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L04 | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER |
| XRT75L04IV | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| XRT75L02IV-F | 功能描述:網絡控制器與處理器 IC 2-Ch DS3, E3, STS-1 RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT75L02IVTR-F | 功能描述:時鐘合成器/抖動清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| XRT75L03 | 制造商:EXAR 制造商全稱:EXAR 功能描述:THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| XRT75L03D | 制造商:EXAR 制造商全稱:EXAR 功能描述:THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L03DES | 功能描述:時鐘合成器/抖動清除器 3 CH T3/E3/STS1 LIU+DESYNCH3.3V RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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