參數(shù)資料
型號(hào): XR-T5793
廠商: Exar Corporation
英文描述: Quad E1 Line Interface Unit
中文描述: 四路E1線路接口單元
文件頁數(shù): 2/16頁
文件大?。?/td> 177K
代理商: XR-T5793
XR-T5793
2
Rev. 2.00
BLOCK DIAGRAM
0.1
μ
F
TIP
RX INPUT
RING
TIP
TX OUTPUT
RING
PE-65839
TTI-7149
TIP
TIP
0.1
μ
F
75
RXIN
100
or
120
LOOPEN
LPMOD
E1/T1-
LOOPSEL (1.0)
TXOUT
TXEN
Rout
1
Level
Detector
Transceiver 4
LOS
RXPOS
RXNEG
TXNEG
TCLK
Slicer
Peak
Detector
Slice
Voltage
TXPOS
Driver
L
o
c
a
l
/
R
e
m
o
t
e
L
o
o
p
b
a
c
k
Transceiver 3
Transceiver 2
Transceiver 1
Figure 1. Block Diagram
Impedance Selectable
Receivers. Return
Loss Exceeds G7.03.
120
Balanced
(or 100
)
LOS Threshold Based on G.775
Impedance
Selectable
Tristate
Drivers Return
Loss Exceeds
ETSI 300 166
120
,100
or
75
Balanced
75
Unbalanced
(Without Transformer)
75
Unbalanced
(Without Transformer)
R
OUT1
Note
1
R
OUT
= 68
for 120
line impedance, R
OUT
= 62
for 100
line impedance, R
OUT
= 68
for 75
line impedance
PE-65834
TTI-7148
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