PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 115

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

Semiconductor Group
SAIS…
PLB…
AXRA…
ALMF…
Send AIS Towards System Interface
Sends AIS via output RDO towards system interface. This function is
not influenced by bit FMR2.DAIS.
Payload Loopback
0…
1...
Automatic Transmit Remote Alarm
0 ... Normal operation
1 ... The Remote Alarm bit will be automatically set in the outgoing
Automatic Loss of Multiframe
0 ...
1 ... The receiver will search a new basic- and multiframing if more
Normal operation. Payload loop is disabled.
The payload loopback will loop the data stream from the
receiver section back to transmitter section. Looped data is
output on pin RDO. Data received at port XDI, XSIG, SYPX and
XMFS will be ignored. With XSP.TT0=1 timeslot 0 will also be
looped. If XSP.TT0=0 timeslot 0 will be generated internally.
AIS is sent immediately on port RDO by setting the FMR2.SAIS
bit. During payload loop is active a write access to register XC1
will set the read/write pointer of the transmit elastic buffer into
its
compensation.
data stream if the receiver is in asynchronous state (FRS0.LFA
bit is set). In synchronous state the remote alarm bit will be
reset. Additionally in multiframe format FMR2.RFS1=1 and
FMR3.EXTIW =1 and the 400 msec timeout has elapsed, the
remote alarm bit will be active in the outgoing data stream. In
multiframe synchronous state the outgoing remote alarm bit is
cleared.
than 914 CRC errors have been detected in a time interval of
one second. The internal 914 CRC error counter will be reset if
the multiframe synchronization is found. Incrementing the
counter is only enabled in the multiframe synchronous state.
Normal operation
optimal
position
115
to
ensure
Operational Description E1
a
maximum
PEB 22554
wander
09.98