MB86967 Datasheet, PDF (69/129 Pages) Fujitsu Component Limited. – LAN Controller with PC Card, ISA Bus, and General-purpose Bus Interfaces

MB86967
7. I/O Address Space
I/O address space has control registers in the LAN controller and the LAN card control register; in some cases,
it has ID numbers. The MB86967 supports both the independent I/O addressing mode, and overlapping I/O
addressing mode. Index 0 of the 32 I/O indexes is used to address the independent I/O, and index 31 is used
to address the overlapping I/O. One index has 32 bytes of address space. In the independent I/O addressing
mode, the I/O address pins A4 to A0 are used.
When using the overlapping I/O addressing mode in the ISA and EISA buses, I/O address space is allocated
to any one of the 31 indexes. The system can select any I/O base address by writing different indexes to bits 0
to 5 of the card configuration option register. In this mode, all I/O address pins A0 to A10 are used.
If 32 bytes of I/O address space are allocated to the control registers in the LAN controller, the LAN card control
register, and ID numbers are as follows:
Base Address
+0 to F
+10
+12, 14, 16, 18, 1A, 1C, 1E
+11, 13, 15, 17, 19, 1B, 1D, 1F
Register
Control registers in LAN controller
LAN card control register
For setting ID numbers (only read value valid)
A read value that is not used as the ID number is undefined.
Reserved (The read value is undefined and writing is invalid.)
The configuration indexes and I/O base addresses to be assigned are as follows:
Index
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CCR 7F0H
Bit 0 to 5
000000
100000
100001
100010
100011
100100
100101
100110
100111
101000
101001
101010
101011
101100
101101
101110
101111
I/O Address Space
I/O function in non-active
Independent I/O addressing
020H to 03FH
040H to 05FH
060H to 07FH
080H to 09FH
0A0H to 0BFH
0C0H to 0DFH
0E0H to 0FFH
100H to 11FH
120H to 13FH
140H to 15FH
160H to 17FH
180H to 19FH
1A0H to 1BFH
1C0H to 1DFH
1E0H to 1FFH
Index
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
CCR 7F0H
Bit 0 to 5
110000
110001
110010
110011
110100
110101
110110
110111
111000
111001
111010
111011
111100
111101
111110
111111
I/O Address Space
200H to 21FH
220H to 23FH
240H to 25FH
260H to 27FH
280H to 29FH
2A0H to 2BFH
2C0H to 2DFH
2E0H to 2FFH
300H to 31FH
320H to 33FH
340H to 35FH
360H to 37FH
380H to 39FH
3A0H to 3BFH
3B0H to 3DFH
3E0H to 3FFH
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