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PEB2256HT датащи(PDF) 29 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) 29 Page - Infineon Technologies AG

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FALC56 V1.2
PEB 2256
Pin Descriptions
Data Sheet
29
2002-08-27
2.3
Pin Definitions and Functions
•
Table 1
Pin Definitions - Microprocessor Interface
Pin
No.
Ball
No.
Symbol
Input (I)
Output (O)
Supply (S)
Function
50
49
48
47
46
45
44
43
E6
E8
F9
F6
F8
G9
F7
G8
A7
A6
A5
A4
A3
A2
A1
A0
I + PU
Address Bus
These inputs interface with eight bits of the
system’s address bus to select one of the
internal registers for read or write.
21
22
23
26
27
28
29
30
31
32
33
36
37
38
39
40
J1
J2
H3
H4
F4
J4
H5
F5
J5
G5
G6
H6
G7
H7
J8
H8
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
I/O + PU
Data Bus
Bidirectional tristate data lines which interface
with the system’s data bus. Their configuration
is controlled by the level of pin DBW:
8-bit mode (DBW = 0): D(7:0) are active.
D(15:8) are internally pulled high.
16-bit mode (DBW = 1): D(15:0) are active.
In case of byte transfers, the active half of the
bus is determined by A0 and BHE/BLE and the
selected bus interface mode (via pin IM). The
unused half is internally pulled high.



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