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PEB2256HT датащи(PDF) 40 Page - Infineon Technologies AG

номер детали PEB2256HT
подробное описание детали  E1/T1/J1 Framer and Line Interface Component for Long and Short Haul Applications
PDF  490 Pages
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производитель  INFINEON [Infineon Technologies AG]
домашняя страница  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

PEB2256HT датащи(HTML) 40 Page - Infineon Technologies AG

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FALC56 V1.2
PEB 2256
Pin Descriptions
Data Sheet
40
2002-08-27
67
68
69
70
D6
A6
B5
D5
RPA
RPB
RPC
RPD
I/O + PU
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
®56. After reset
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.
I + PU
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
µs.
Table 4
Pin Definitions - System Interface (cont’d)
Pin
No.
Ball
No.
Symbol
Input (I)
Output (O)
Supply (S)
Function



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