參數(shù)資料
型號： XRT73LC00A
廠商： Exar Corporation
英文描述： E3/DS3/STS-1 LINE INTERFACE UNIT
中文描述： E3/DS3/STS-1線路接口單元
文件頁數(shù)： 33/53頁
文件大小： 376K
代理商： XRT73LC00A
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XRT73LC00A
E3/DS3/STS-1 LINE INTERFACE UNIT
PRELIMINARY
REV. P1.0.0
30
Design Considerations for DS3 and STS-1 Appli-
cations
When installing equipment into environments as de-
picted in Figure 18, the system installation personnel
may be able to determine the cable length between
the local terminal equipment and the DSX-3/STSX-1
Cross-Connect Patch-Panel. The cable length be-
tween the local terminal equipment and the DSX-3/
STSX-1 Cross-Connect Patch Panel ranges between
0 and 450 feet.
It is extremely unlikely that the system installation
personnel will know the cable length between the
DSX-3/STSX-1 Cross-Connect Patch-Panel and the
remote terminal equipment. We recommend that the
Receive Equalizer be enabled by setting the REQDIS
input pin or bit-field to "0".
The only time the Receive Equalizer should be dis-
abled is when there is an off-chip equalizer in the Re-
ceive path between the DSX-3/STSX-1 Cross-Con-
nect and the RTIP/RRING input pins or, in applica-
tions where the Receiver is monitoring the transmit
output signal directly.
3.2.1.1.2
cations
In E3 system installation, it is recommended that the
Receive Equalizer of the XRT73LC00A be enabled by
pulling the REQDIS input pin to GND or by setting the
REQDIS bit-field to “0”.
Design Considerations for E3 Appli-
N
OTE
:
The results of extensive testing indicates that when
the Receive Equalizer is enabled, the XRT73LC00A is
capable of receiving an E3 line signal with anywhere from 0
to 12dB of cable loss over the Industrial Temperature range.
Design Considerations if the Overall Cable
Length is known
If during system installation the overall cable length is
known, then in order to optimize the performance of
the XRT73LC00A in terms of receive intrinsic jitter,
etc., the Receive Equalizer should be enabled or dis-
abled based upon the following recommendations:
The Receive Equalizer should be turned ON if the
Receive Section is going to receive a line signal with
an overall cable length of 300 feet or greater. The
Receive Equalizer should be turned OFF if the Re-
ceive Section is going to receive a line signal over a
cable length of less than 300 feet.
F
IGURE
19. T
HE
T
YPICAL
A
PPLICATION
FOR
THE
S
YSTEM
I
NSTALLER
DSX-3
or
STSX-1
Digital Cross-
Connect System
Transmitting
Terminal
Receiving
Terminal
0 to 450 feet of
Cable
Pulses that are
compliant to the
Isolated DSX-3 or
STSX-1 Pulse
Template
Requirement
0 to 450 feet of
Cable
相關PDF資料
PDF描述
XRT73LC00AIV E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73LC03A 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73LC03AIV 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73LC04A 4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
XRT73LC04AIV 4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
相關代理商/技術參數(shù)
參數(shù)描述
XRT73LC00A_08 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT
XRT73LC00AES 功能描述:網(wǎng)絡控制器與處理器 IC 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT73LC00AIV 功能描述:外圍驅(qū)動器與原件 - PCI 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
XRT73LC00AIV-F 功能描述:外圍驅(qū)動器與原件 - PCI 1-Ch DS3, E3, SONET 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
XRT73LC00AIVTR 功能描述:網(wǎng)絡控制器與處理器 IC 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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