PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 170

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

XFW…
XREP…
RLI…
CEC…
SFS…
Receive Signaling Status Register (Read)
RSIS
RSIS relates to the last received HDLC frame; it is copied into RFIFO when end-of-frame
is recognized (last byte of each stored frame).
VFR…
Semiconductor Group
7
VFR
Status Freeze Signaling
Valid Frame
– or when all bytes in the accessible half of the XFIFO have been
Transmit FIFO Write Enable
Data can be written to the XFIFO.
Transmission Repeat
Status indication of CMDR.XREP.
Receive Line Inactive
Neither FLAGs as Interframe Time Fill nor frames are received via the
signaling timeslot.
Command Executing
Note: CEC will be active at most 2.5 periods of the current system
0…
1…
Determines whether a valid frame has been received.
An invalid frame is either
– a frame which is not an integer number of 8 bits (n
0… No command is currently executed, the CMDR register can be
1… A command (written previously to CMDR) is currently executed,
1… valid
0… invalid
RDO
moved in the inaccessible half.
(e.g. 25 bits), or
written to.
no further command can be temporarily written in CMDR
register.
freeze signaling status inactive.
freeze signaling status active
data rate.
CRC16
RAB
170
HA1
HA0
Operational Description E1
0
8 bits) in length
LA
PEB 22554
(x65)
09.98