PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 303

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

XLU…
XTM…
SSC2…
Semiconductor Group
Transmit LLB UP Code
0…
1…
Transmit Transparent Mode
0…Ports SYPX / XMFS define the frame / multiframe begin on the
transmit system highway. The transmitter is usually synchronized on
this externally sourced frame boundary and generates the FS/DL bits
according to this framing. Any change of the transmit time-slot
assignment will subsequently produce a change of the FS/DL bit
positions.
1… Disconnects the control of the transmit system interface from the
transmitter. The transmitter is now in a free running mode without any
possibility to actualize the multiframe position. The framing (FS/DL
bits) generated by the transmitter will not be „disturbed“ (in case of
changing the transmit time-slot assignment) by the transmit system
highway unless register XC1 is written. This bit should be set if
loop-timed application is selected. For proper operation the transmit
elastic buffer (2 frames, SIC1.XBS1/0= 10) has to be enabled.
Select Sync Conditions
Only valid in ESF framing format.
Loss of Frame Alignment FRS0.LFA is declared if more than 320
CRC6 errors per second interval are detected.
continuously until this bit is reset. The LLB Down Code will be
optionally overwritten by the framing/DL/CRC bits.
Normal operation.
A one in this bit position will cause the transmitter to replace
normal transmit data with the LLB UP (actuate) Code
continuously until this bit is reset. The LLB UP Code will be
optionally overwritten by the framing/DL/CRC bits. For proper
operation bit FMR5.XLD must be cleared.
303
Operational Description T1 / J1
PEB 22554
09.98