PXB4221 Infineon Technologies AG, PXB4221 Datasheet - Page 84

• Manufacturer Part Number: PXB4221
• Description: IWE8 Interworking Element for 8 E1/T1 Lines
• Manufacturer: Infineon Technologies AG

4.8.3
The framer transmit clock, data, framesync and multi-framesync signals can be looped
from the Framer Transmit Interface to the Framer Receive Interface per port. This
feature can be enabled by setting the “p_slp” bit in the Port Configuration Register (pcfN,
see
The loopback can be made transparent or non-transparent by setting the “tslp” bit in the
Loopback Control Register (lpbc,
transmitted data is also visible on FTDAT. Otherwise, if non-transparent, all 1s are
transmitted on FTDAT.
Data Sheet
Chapter
Serial Loop
7.1).
Chapter
7.11). If the loopback is made transparent, all
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PXB4219 / PXB4220 / PXB4221
Operational Description
2002-05-06