pef22504 Infineon Technologies Corporation, pef22504 Datasheet - Page 86

• Manufacturer Part Number: pef22504
• Description: Quad E1/t1/j1 Line Interface Component For Long- And Short-haul Applications Pef 22504 E, Pef 22504 Ht, Version 2.1
• Manufacturer: Infineon Technologies Corporation

Table 15
Line Impedance Z
120
100
75
This example uses the 300
impedances, the analog switch is not used.
3.7.3.2
For short-haul monitoring applications, the receive equalizer can be switched into receive line monitoring mode
(RLM) by setting of the register bit LIM0.RLM. One channel is used as a short-haul receiver while the other is used
as a short-haul monitor, see
an incoming signal of -20 dB resistive attenuation.
Figure 25
3.7.3.3
A monitoring application using the receive line monitoring mode is shown in
the separate analog switch are always óff´, so that in P/PG-LBGA-160-1 package the pins RLAS2 can be
connected to VSSX and HW compatibility to the QuadLIU
Data Sheet
Generic Receiver Configuration Example
Receive Line Monitoring Mode (RLM)
Principle of Receive Line Monitoring RLM (shown for one line)
Monitoring Application using RLM
0
E1/T1/J1
Receive
External Resistor
R
100
E1/T1/J1
applications)
Line
E
(for common
Figure
switch to switch between 100
resistive -20 dB network
R3
25. In this mode the receiver sensitivity of the monitor is increased to detect
R3
External Resistors
R
----
S1
and R
t2 : t1
t2 : t1
S2
86
TM
V2.1 is fullfiled.
and 75
R
R
E
E
300 Ohm Switch
off
off
on
termination resistance for the different line
RL1
RL2
RL1
RL2
Figure
LIM0.RLM=0
LIM0.RLM=1
(Receiver)
(Monitor)
FALC
FALC
26. Both, the 300
®
®
F0074
Functional Description
Analog Switch
not used
Rev. 1.3, 2006-01-25
QuadLIU
PEF 22504
switch and
TM