PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 198

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

Pin Definitions and Function (cont’d)
Pin No.
4 -7,
14 -17,
22 - 25,
32 - 35
Semiconductor Group
Symbol
RP(A-D)1
RP(A-D)2
RP(A-D)3
RP(A-D)4
Input (I)
Output (O)
O
O
O
O
O
Function
Receive Multiframe Begin (RMFB)
Enabled with PC(1-4).RPC(2-0) = 010.
The function depends on programming bit
XC0.MFBS:
MFBS = 1: RMFB marks the beginning of every
received multiframe (RDO).
MFBS = 0: Marks the beginning of every received
superframe. Additional pulses every 12 frames are
provided when using ESF or F72 format.
Receive Signaling Marker (RSIGM)
Enabled with PC(1-4).RPC(2-0) = 011.
– Marks the time-slots which are defined by
register RTR1-4 of every received frame on port
RDO.
– When using the CAS-BR signaling scheme (bit
XC0.BRM = 1), the robbed bit of each channel
every six frames is marked, if it is enabled via
register XC0.BRM = 1.
Receive Signaling Data (RSIG)
Enabled with PC(1-4).RPC(2-0) = 100.
The received CAS signaling data is sourced by this
pin. Time-slots on RSIG correlates directly to the
time-slot assignment on RDO. In system interface
multiplex
datastreams are merged into a single datastream
byte or bit interleaved and is transmitted on port
RPB1.
Data Link Bit Receive (DLR)
Enabled with PC(1-4).RPC(2-0) = 101.
Marks the DL-bit position within the data stream on
RDO.
Freeze Signaling (FREEZE)
Enabled with PC(1-4).RPC(2-0) = 110.
The freeze signaling status is active high by
detecting a Loss of Signal alarm, or a Loss of
Frame Alignment or a receive slip (pos. or neg.). It
will hold high for at least one complete multiframe
after the alarm disappears. Setting SIC2.FFS
enforces a high on pin FREEZE.
198
mode
all
four
General Features T1
received
PEB 22554
signaling
09.98