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參數資料
| 型號： | XRT75L04DIV |
| 廠商： | EXAR CORP |
| 元件分類： | 數字傳輸電路 |
| 英文描述： | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| 中文描述： | ATM/SONET/SDH SUPPORT CIRCUIT, PQFP176 |
| 封裝： | 24 X 24 MM, 1.40 MM HEIGHT, TQFP-176 |
| 文件頁數： | 1/98頁 |
| 文件大小： | 536K |
| 代理商： | XRT75L04DIV |
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Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
á
FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
XRT75L04D
NOVEMBER 2003
GENERAL DESCRIPTION
REV. 1.0.1
The XRT75L04D is a four-channel fully integrated
Line Interface Unit (LIU) with Sonet Desynchronizer
for E3/DS3/STS-1 applications. It incorporates four
independent Receivers, Transmitters and Jitter
Attenuators in a single 176 pin QFP package.
Each channel of the XRT75L04D can be configured
to operate in E3 (34.368 MHz), DS3 (44.736 MHz) or
STS-1 (51.84 MHz) rates that are independent of
each other. Each transmitter can be turned off and tri-
stated for redundancy support and for conserving
power.
The XRT75L04D’s differential receivers provide high
noise interference margin and are able to receive the
data over 1000 feet of cable or with up to 12 dB of
cable attenuation.
The XRT75L04D incorporates an advanced crystal-
less jitter attenuator per channel that can be selected
either in the transmit or receive path. The jitter
attenuator performance meets the ETSI TBR-24 and
Telcordia GR-499, GR-253 specifications. Also, the
jitter attenuator can be used for clock smoothing in
SONET STS-1 to DS3 de-mapping.
The XRT75L04D provides both Serial Microprocessor
Interface as well as Hardware mode for programming
and control.
The XRT75L04D supports local, remote and digital
loop-backs. The XRT75L04D 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.
TRANSMITTER:
Compliant with Telcordia 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 Attenuators can be selected in Receive or
Transmit paths.
Compliant with jitter transfer template outlined in
ITU G.751, G.752, G.755, GR-253 and GR-499-
CORE,1995 standards.
Meets ETSI TBR 24 Jitter Transfer Requirements.
16 ,32 or 128 bits selectable FIFO size.
Meets the Wander specifications described in
T1.105.03b.
Jitter Attenuators can be disabled.
CONTROL AND DIAGNOSTICS:
Serial Microprocessor Interface for control and
configuration.
Supports
optional
internal
Monitoring.
PRBS error counter register to accumulate errors.
Supports Local, Remote and Digital Loop-backs.
Single 3.3 V ± 5% power supply.
5 V Tolerant I/O.
Maximum Power Dissipation 1.8W.
Available in 176 pin QFP package
- 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.
相關PDF資料 |
PDF描述 |
|---|---|
| XRT75L04 | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER |
| XRT75L04IV | FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER |
| XRT75L06D | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L06DIB | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75L06 | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
相關代理商/技術參數 |
參數描述 |
|---|---|
| XRT75L04DIV-F | 功能描述:外圍驅動器與原件 - PCI 4-Ch DS3, E3, STS-1 RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT75L04DIVTR | 功能描述:時鐘合成器/抖動清除器 4 CHNL E3/DS3/STS 1 JITTER ATTENUATOR 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 |
| XRT75L04DIVTR-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 |
| XRT75L04ES | 功能描述:時鐘合成器/抖動清除器 4CH T3/E3/STS1 LIU+JA 3.3V 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 |
| XRT75L04IV | 功能描述:外圍驅動器與原件 - PCI 4CH E3/DS3/STS1 JITTER ATTENUATOR RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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