peb2256 Infineon Technologies Corporation, peb2256 Datasheet - Page 29

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

2.3
•
Table 1
Pin
No.
50
49
48
47
46
45
44
43
21
22
23
26
27
28
29
30
31
32
33
36
37
38
39
40
Data Sheet
Ball
No.
E6
E8
F9
F6
F8
G9
F7
G8
J1
J2
H3
H4
F4
J4
H5
F5
J5
G5
G6
H6
G7
H7
J8
H8
Pin Definitions and Functions
Pin Definitions - Microprocessor Interface
Symbol
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Output (O)
Supply (S)
I + PU
I/O + PU
Input (I)
Function
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.
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.
29
Pin Descriptions
FALC56 V1.2
PEB 2256
2002-08-27