參數(shù)資料
型號(hào)： XRT5897
廠商： Exar Corporation
英文描述： Seven-Channel E1 Line Interface (3.3V or 5.0V)(七通道E1 3.3V線接口單元)
中文描述： 七通道E1線路接口（3.3V或5.0V），（七通道素E1 3.3線接口單元）
文件頁(yè)數(shù)： 1/20頁(yè)
文件大小： 959K
代理商： XRT5897
XRT5897
Seven-Channel E1
Line Interface
Rev. 1.10
E
2000
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538
z
(510) 668-7000
z
FAX (510) 668-7017
March 2000-3
FEATURES
D
Compliant with ITU G.703 Pulse Mask Template for
2.048Mbps (E1) Rates
D
Seven Independent CEPT Transceivers
D
Supports Differential Transformer Coupled
Receivers and Transmitters
D
On Chip Pulse Shaping for Both 75
and 120
Line
Drivers
D
Compliant with ITU G.775 LOS Declaration/Clearing
Recommendation
D
Optional User Selectable LOS Declaration/Clearing
Delay
D
Logical Inputs Accept either 3.3V or 5.0V Levels
D
Ultra-Low Power Dissipation
D
+3.3V Supply Operation
D
Individual Transmit Channel Over Temperature
Protection
APPLICATIONS
D
SDH Multiplexer
D
Digital Cross Connects
GENERAL DESCRIPTION
The XRT5897 is an optimized seven channel 3.3V line
interface unit fabricated using low power CMOS
technology. The device contains seven independent E1
channels.ItisprimarilytargetedtowardSDHmultiplexers
that accommodate TU12 Tributary Unit Frames. Line
cardsin these units multiplex21 E1 interfacesinto higher
SDHrates. DeviceswithsevenE1interfacessuchasthe
XRT5897
provide
the
most
implementing 21 channel line cards.
performs the driver and receiver functions necessary to
convert bipolar signals to logical levels and vice versa.
The device requires transformers on both receiver and
transmitter sides, and supports both balanced and
unbalanced interfaces.
efficient
method
Each channel
of
The device offers two distinct modes of LOS detection.
The first method, which does not require an external
clock, provides an LOS output indication signal with
thresholds and delay that comply with the ITU G.775
requirements. In the second mode, the user provides an
external clock that increases the delay for LOS
declaration and clearing. This feature provides the user
with the flexibility to implement LOS specifications that
require a delay greater than the G.775 requirements.
ORDERING INFORMATION
Part No.
Package
Operating
Temperature Range
XRT5897IV
100 Lead TQFP (14 x 14 x 1.4mm)
-40
°
C to +85
°
C
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT5897ES 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 7 CH E1 AFE 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
XRT5897IV 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 7CH 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
XRT5897IV-F 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 7 Ch.E1LIU3.3/5.5V 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
XR-T5990CN 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Tone/Pulse Telephone Dialer
XR-T5990CP 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Tone/Pulse Telephone Dialer
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