參數(shù)資料
型號(hào)： XRT59L921
廠商： Exar Corporation
英文描述： TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
中文描述： 二十一條路E1線路接口單元
文件頁(yè)數(shù)： 23/32頁(yè)
文件大小： 377K
代理商： XRT59L921
XRT59L921
21
REV. 1.2.1
TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
P.O. Box 5826
Redwood City, CA 94063
Tel: (650)568-5800
FAX: (650)568-6161
2.0
THE RECEIVE SECTION
The Receive Sections of the XRT59L921 consists of the following blocks:
The Receive Equalizer block
The Peak Detector and Slicer block
The LOS Detector block
The Receive Output Interface block
2.1
Interfacing the Receive Sections to the Line (Transformer Coupling)
The design of each channel (within the XRT59L921) permits the user to transformer-couple the Receive
Section to the line. Additionally, as mentioned earlier, the specification documents for E1 specify 75
termination loads, when transmitting over coaxial cable, and 120
loads, when transmitting over twisted-pair.
Figure 9
, and
Figure 10
present the two methods that the user can employ in order to interface the Receivers
(of the XRT59L921) to the line.
F
IGURE
9. R
ECOMMENDED
S
CHEMATIC
FOR
I
NTERFACING
THE
R
ECEIVE
S
ECTIONS
OF
THE
XRT59L921
TO
THE
L
INE
FOR
75
A
PPLICATIONS
(T
RANSFORMER
-C
OUPLING
)
75
RxPOS_n
RxNEG_n
LOS_n
XRT59L921
LOS_n
RxPOS_n
RxNEG_n
RTIP_n
RRING_n
1:1
Coaxial cable
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XRT59L921ES 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 21 CH 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
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XRT-600 制造商:Pro-Signal 功能描述:PATCH LEAD CAT5E X-OVER 0.5M 制造商:PRO SIGNAL 功能描述:PATCH LEAD, CAT5E, X-OVER, 0.5M 制造商:pro-power 功能描述:PATCH LEAD, CAT5E, X-OVER, 0.5M; Connector Type A:RJ45 Plug; Connector Type B:RJ45 Plug; Cable Length - Imperial:19.69"; Cable Length - Metric:500mm; Jacket Colour:Grey; Cable Assembly Type:Network; Cable Length:0.5m; Colour:Grey;
XR-T6000CN 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Telecommunication IC
XRT-601 制造商:Pro-Signal 功能描述:PATCH LEAD CAT5E X-OVER 1M 制造商:pro-power 功能描述:PATCH LEAD, CAT5E, X-OVER, 1M 制造商:PRIVATE LABEL 功能描述:PATCH LEAD, CAT5E, X-OVER, 1M, Connector Type A:RJ45 Plug, Connector Type B:RJ45
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