PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 114

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

XAIS…
Framer Mode Register 2 (Read/Write)
Value after RESET: 00
FMR2
RFS1... RFS0...
RTM…
DAIS…
Semiconductor Group
7
RFS1
Receive Framing Select
01…4.096 MBit/s
10…8.192 MBit/s
11…16.384 MBit/s
Transmit AIS Towards Remote End
Sends AIS via ports XL1, XL2, XOID towards the remote end. The
outgoing data stream which could be looped back via the Local Loop
to the system interface will not be affected.
00 ... Doubleframe format
01 ... Doubleframe format
10 ... CRC4 Multiframe format
11 ... CRC4 Multiframe format with modified CRC4 Multiframe
Receive Transparent Mode
Setting this bit disconnects control of the internal elastic store from the
receiver. The elastic store is now in a “free running” mode without any
possibility to actualize the time slot assignment to a new frame
position in case of re-synchronization of the receiver. This function
can be used in conjunction with the “disable AIS to system interface”
feature (FMR2.DAIS) to realize undisturbed transparent reception.
This bit should be enabled in case of unframed data reception mode.
Disable AIS to System Interface
0…
1…
RFS0
H
alignment algorithm (Interworking according to ITU-T G.706
Annex B). Setting of FMR3.EXTIW changes the reaction after
the 400 msec timeout.
AIS is automatically inserted into the data stream to RDO if
QuadFALC is in asynchronous state.
Automatic AIS insertion is disabled. Furthermore, AIS insertion
can be initiated by programming bit FMR2.SAIS.
RTM
DAIS
114
SAIS
PLB
Operational Description E1
AXRA
0
ALMF
PEB 22554
(x1E)
09.98