PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 22

• 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 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 frame on port RDO.
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 mode all four received
signaling 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 SA8-4 bits within the data stream on
RDO. The SA8-4 bit positions in time-slot 0 of
every frame not containing the frame alignment
signal are selected by register XC0.
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
CAS 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.
Frame Synchronous Pulse (RFSP)
Enabled with PC(1-4).RPC(2-0) = 111.
Active low framing pulse derived from the
received PCM route signal. During loss of
synchronization (bit FRS0.LFA), this pulse is
suppressed (not influenced during alarm
simulation).
Pulse frequency: 8 kHz, Pulse width: 488 ns
22
Pin Descriptions E1
PEB 22554
09.98