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PEB2256HT Datasheet(PDF) 64 Page - Infineon Technologies AG

No. de pieza PEB2256HT
Descripción Electrónicos  E1/T1/J1 Framer and Line Interface Component for Long and Short Haul Applications
PDF  490 Pages
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Fabricante Electrónico  INFINEON [Infineon Technologies AG]
Página de inicio  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

PEB2256HT Datasheet(HTML) 64 Page - Infineon Technologies AG

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FALC56 V1.2
PEB 2256
Functional Description E1
Data Sheet
64
2002-08-27
Figure 15
Receive Line Monitoring
Using the receive line monitor mode and the hardware tristate function of transmit lines
XL1/2, the FALC56 now supports applications connecting two devices to one receive
and transmission line. In these kind of applications both devices are working in parallel
for redundancy purpose (see Figure 16). While one of them is driving the line, the other
one must be switched into transmit line tristate mode. If both channels are configured
identically and supplied with the same system data and clocks, the transmit path can be
switched from one channel to the other without causing a synchronization loss at the
remote end.
Table 12
External Component Recommendations (Monitoring)
Parameter
1)
1)
This includes all parasitic effects caused by circuit board design.
Characteristic Impedance [
Ω]
E1
75
120
R
1 (± 1 %) [Ω]75
120
R
2 (± 1 %) [Ω]75
120
R
3 (± 1 %) [Ω]330
510
t
2 : t1
1 : 1
1 : 1
FALC®
(Receiver)
FALC®
(Monitor)
RL1
E1/T1/J1
Receive
Line
LIM0.RLM=0
LIM0.RLM=1
R1
R2
R3
R3
RL2
RL1
RL2
t2 : t1
t2 : t1
resistive -20 dB network
F0074



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