PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 24

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

Pin Definitions and Function (cont’d)
Pin No.
120 - 123
126 - 129
51 - 54
57 - 60
Semiconductor Group
Symbol
XP(A-D)1
XP(A-D)2
XP(A-D)3
XP(A-D)4
Input (I)
Output (O)
I/O + PU
I + PU
I + PU
Function
Transmit Multifunction Port A-D
Depending on programming of bits PC(1-
4).XPC(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 inputs. With the
selection of the pinfunction the in/output
configuration is also achieved. Depending on bit
SIC3.RESX all outputs / inputs of the transmit
system interface are updated / sampled with the
rising or falling edge of SCLKX
Synchronous Pulse Transmit (SYPX)
Defines the beginning of time-slot 0 at system
highway port XDI in conjunction with the values
of registers XC0/1. In system interface multiplex
mode SYPX has to be provided at port XPA1 for
all 4 channels and defines the beginning of
time-slot 0 on port XDI1/XSIG1. Enabled with
PC(1-4).XPC(2-0) = 000 (reset configuration).
Pulse Cycle: Integer multiple of 125 s.
Transmit Multiframe Synchronization
(XMFS)
Enabled with PC(1-4).XPC(2-0) = 001 this port
defines the frame and multiframe begin on the
transmit system interface ports XDI and XSIG.
Depending on PC5.CXMFS the signal on XMFS
is active high or low. For correct operation of
XMFS no SYPX pin function should be selected
for the remaining multifunction ports of the
same channel.
In system interface multiplex mode XMFS has
to be provided at port XPB1 for all 4 channels.
Note: A new multiframe position has been
settled at least one multiframe after pulse XMFS
has been supplied.
24
Pin Descriptions E1
PEB 22554
09.98