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參數(shù)資料
| 型號： | XRT73L03IV |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | 3 CHANNEL E3/DS3/STS-1 LINE INTERFCE UNIT |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PQFP120 |
| 封裝： | 14 X 20 MM, HEAT SINK, TQFP-120 |
| 文件頁數(shù)： | 33/53頁 |
| 文件大小： | 604K |
| 代理商： | XRT73L03IV |
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XRT73L00
E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.2.0
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 XRT73L00 be enabled by
pulling the REQDIS input pin to GND or by setting the
REQDIS bit-field to “0”.
N
OTE
:
The results of extensive testing indicates that when
the Receive Equalizer is enabled, the XRT73L00 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 XRT73L00 in terms of receive intrinsic jitter, etc.,
the Receive Equalizer should be enabled or disabled
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 Re-
ceive Equalizer should be turned OFF if the Receive
Section is going to receive a line signal over a cable
length of less than 300 feet.
Design Considerations for E3 Appli-
F
IGURE
18. 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(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT73LC00 | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73LC00IV | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00 | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00A | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00AIV | E3/DS3/STS-1 LINE INTERFACE UNIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT73L03IVS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| XRT73L04A | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L04AIV | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L04B | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L04BES | 功能描述:網(wǎng)絡(luò)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(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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