PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 197

• 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)
I/O + PU
I + PU
O
Function
Receive Multifunction Port A-D
Depending on programming of bits
PC(1-4).RPC(2-0) this multifunction ports carries
information to the system interface or from the
system to the QuadFALC. After Reset these ports
are configured to be inputs. With the selection of
the pinfunction the in/output configuration is also
achieved. Depending on bit SIC3.RESR all
outputs / inputs of the receive system interface are
updated / sampled with the rising or falling edge of
SCLKR.
Synchronous Pulse Receive (SYPR)
Enabled with PC(1-4).RPC(2-0) = 000 (reset
configuration).
Defines the beginning of time-slot 0 at system
highway port RDO in conjunction with the values
of registers RC0/1. In system interface multiplex
mode SYPR has to be provided at port RPA1 for
all 4 channels and defines the beginning of
time-slot 0 on port RDO1/RSIG1.
Pulse Cycle: Integer multiple of 125 s.
Receive Frame Marker (RFM)
Enabled with PC(1-4).RPC(2-0) = 001.
CMR2.IRSP = 0: The receive frame marker could
be active high for a 1.544 / 2.048 MHz period
during any bit position of the current frame.
IProgramming is done with registers RC1/0.
CMR2.IRSP = 1: Internal generated frame
synchronization pulse generated by the DCO-R
circuitry. Together with registers RC1/0 the frame
begin on the receive system interface is defined.
This frame synchronization pulse is active low
1.544 / 2.048 MHz period.
197
General Features T1
PEB 22554
09.98