PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 83

• Manufacturer Part Number: PEB22554
• Description: ICs for Communications
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Remote Loop
In the remote loopback mode the clock and data recovered from the line inputs RL1/2 or
RDIP/RDIN are routed back to the line outputs XL1/2 or XDOP/XDON via the analog or
digital transmitter. As in normal mode they are also processed by the synchronizer and
then sent to the system interface.The remote loopback mode is selected by setting the
respective control bits LIM1.RL+JATT. Received data may be looped with or without the
transmit jitter attenuator (FIFO).
Figure 28
Remote Loop
Semiconductor Group
RL1
RL2
XL1
XL2
XCLK
Clock +
Data
Recovery
MUX
MUX
RCLK
RCLK
DCO1/2
FIFO
83
Rec.
Framer
Trans.
Framer
Functional Description E1
Elast.
Store
Elast.
Store
PEB 22554
ITS09750
RDO
XDI
09.98