peb2256 Infineon Technologies Corporation, peb2256 Datasheet - Page 40

• Manufacturer Part Number: peb2256
• Description: E1/t1/j1 Framer And Line Interface Component For Long And Short Haul Applications
• Manufacturer: Infineon Technologies Corporation

Table 4
Pin
No.
67
68
69
70
Data Sheet
Ball
No.
D6
A6
B5
D5
Pin Definitions - System Interface (cont’d)
Symbol
RPA
RPB
RPC
RPD
Output (O)
Supply (S)
I/O + PU
I + PU
Input (I)
Function
Receive Multifunction Port A to D
Depending on programming of bits
PC(1:4).RPC(2:0) these multifunction ports
carry information to the system interface or
from the system to the FALC
these ports are configured to be inputs. With
the selection of the appropriate pin function,
the corresponding input/output configuration is
achieved automatically. Depending on bit
SIC3.RESR latching/transmission of data is
done with the rising or falling edge of SCLKR.
If not connected, an internal pullup transistor
ensures a high input level.
The input function must not be selected twice
or more.
Selectable pin functions are described below.
Synchronous Pulse Receive (SYPR)
PC(4:1).RPC(2:0) = 000
Together with the values of registers RC(1:0)
this signal defines the beginning of time slot 0
on system highway port RDO .
Only one multifunction port may be selected as
SYPR input. After reset, SYPR of port A is
used, the other lines are ignored.
SYPR cannot be used in combination with
RFM.
The pulse cycle is an integer multiple of
125 µ s.
40
®
Pin Descriptions
56. After reset
FALC56 V1.2
PEB 2256
2002-08-27