peb22504 Infineon Technologies Corporation, peb22504 Datasheet - Page 52

• Manufacturer Part Number: peb22504
• Description: Quad Line Interface Unit For E1dt1dj1 Quadliu
• Manufacturer: Infineon Technologies Corporation

4.4.6
The local loop-back mode, selected by LOOP.LL = 1, disconnects the receive lines
RL1 2 or ROID from the receiver. It is used in analog input applications
(LIM1.ECMIR = 0). Instead of the signals coming from the line, data provided by the
system interface is routed through the analog receiver back to the framer interface. The
bit stream is transmitted without disturbance on the transmit line. An AIS to the distant
end can be enabled by setting LIM1.XAIS without influencing the data looped back to the
system interface.
The signal codes for transmitter and receiver have to be programmed to be identical.
Figure 17
Data Sheet
RL2
RL1
1)
XL2
XL1
JATT either in transmit or receive direction
Local Loop
Equalizer
Local Loop Signal Flow
Driver
Line
Local Loop
Detector
Shaper
Pulse
Peak
Clock and
Recovery
Data
52
AIS
JATT
JATT
1)
1)
Interface Description
Decoder
Encoder
QuadLIU V1.1
PEB 22504
ITS10984
RDON
RDOP
RCLK
XDIN
XDIP
TCLK
2001-02