PEB2256E INFINEON [Infineon Technologies AG], PEB2256E Datasheet - Page 350

• Manufacturer Part Number: PEB2256E
• Description: E1/T1/J1 Framer and Line Interface Component for Long and Short Haul Applications
• Manufacturer: INFINEON [Infineon Technologies AG]

DAIS
SAIS
PLB
AXRA
Data Sheet
11 = F24:
Synchronization is achieved on verification the framing pattern and
the CRC6 bits. Synchronous state is reached when framing pattern
and CRC6 checksum are correctly found. For correct operation the
CRC check must be enabled by setting bit FMR1.CRC.
Disable AIS to System Interface
0 =
1 =
Send AIS Towards System Interface
Sends AIS (blue alarm) on output RDO towards system interface.
This function is not influenced by bit FMR2.DAIS.
Payload Loop-Back
0 =
1 =
Automatic Transmit Remote Alarm
0 =
1 =
AIS is automatically inserted into the data stream to RDO if
FALC56 is in asynchronous state.
Automatic AIS insertion is disabled. Furthermore, AIS insertion
can be initiated by programming bit FMR2.SAIS.
Normal operation. Payload loop is disabled.
The payload loop-back loops the data stream from the receiver
section back to transmitter section. Looped data is output on pin
RDO. Data received on port XDI, XSIG, SYPX and XMFS is
ignored. With FMR4.TM = 1 all 193 bits per frame are looped
back. If FMR4.TM = 0 the DL- or FS- or CRC-bits are generated
internally. AIS is sent immediately on port RDO by setting the
FMR2.SAIS bit. During payload loop is active the receive time
slot offset (registers RC(1:0)) should not be changed. It is
recommended to write the actual value of XC1 into this register
once again, because a write access to register XC1 sets the
read/write pointer of the transmit elastic buffer into its optimal
position to ensure a maximum wander compensation (the write
operation forces a slip).
Normal operation
The remote alarm (yellow alarm) bit is set automatically in the
outgoing data stream if the receiver is in asynchronous state
(FRS0.LFA bit is set). In synchronous state the remote alarm bit
is reset.
350
T1/J1 Registers
FALC56 V1.2
PEB 2256
2002-08-27