peb2256 Infineon Technologies Corporation, peb2256 Datasheet - Page 123

• Manufacturer Part Number: peb2256
• Description: E1/t1/j1 Framer And Line Interface Component For Long And Short Haul Applications
• Manufacturer: Infineon Technologies Corporation

5.1.7
For short-haul applications like shown in
switched into receive line monitoring mode (LIM0.RLM = 1). One device is used as a
short-haul receiver while the other is used as a short-haul monitor. In this mode the
receiver sensitivity is increased to detect an incoming signal of -20 dB resistive
attenuation. The required resistor values are given in
Figure 43
Table 27
1)
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
Data Sheet
Parameter
R
R
R
t
2
1
2
3
This includes all parasitic effects caused by circuit board design.
:
( ± 1 %) [ Ω ]
( ± 1 %) [ Ω ]
( ± 1 %) [ Ω ]
t
1
Receive Line Monitoring Mode
1)
E1/T1/J1
Receive
Receive Line Monitoring
External Component Recommendations (Monitoring)
Line
resistive -20 dB network
R3
R3
t2 : t1
t2 : t1
123
1 : 1
100
100
100
430
Characteristic Impedance [ Ω ]
T1
Figure
43, the receive equalizer can be
R1
R2
Table
Functional Description T1/J1
27.
RL1
RL2
RL1
RL2
LIM0.RLM=0
LIM0.RLM=1
(Receiver)
(Monitor)
FALC
FALC
®
®
1 : 1
110
110
110
470
FALC56 V1.2
J1
F0074
PEB 2256
2002-08-27