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ASIX ELECTRONICS CORPORATION
75
AX88796BLF / AX88796BLI
Appendix A2: ISA-like (8/16-bit)
An example, AX88796B’s bus setting as ISA mode. (No external resister connect to EECS and EECK)
CSR Read
Host Addr
A[5:0]
CSR Offset
0
Offset 1
Offset 0
0
1
Offset 1
Offset 1
1
2
Offset 3
Offset 2
2
3
Offset 3
Offset 3
3
4
Offset 5
Offset 4
4
5
Offset 5
Offset 5
5
6
Offset 7
Offset 6
6
7
Offset 7
Offset 7
7
8
Offset 9
Offset 8
8
9
Offset 9
Offset 9
9
A
Offset B
Offset A
A
B
Offset B
Offset B
B
C
Offset D
Offset C
C
D
Offset D
Offset D
D
E
Offset F
Offset E
E
F
Offset F
Offset F
F
10
(DP)
(DP)
(DP)
11
X
X
X
12
Offset 13
Offset 12
12
13
Offset 13
Offset 13
13
14
Offset 15
Offset 14
14
15
Offset 15
Offset 15
15
16
Offset 17
Offset 16
16
17
Offset 17
Offset 17
17
18
Offset 19
Offset 18
18
19
Offset 19
Offset 19
19
1A
Offset 1B
Offset 1A
1A
1B
Offset 1B
Offset 1B
1B
1C
Offset 1D
Offset 1C
1C
1D
Offset 1D
Offset 1D
1D
1E
No effect
Offset 1E
1E
1F
(Reset)
*1
(Reset)
*1
1F
*1 Read offset 1Fh register will reset AX88796B
CSR Write
SD[15:8]
SD[7:0]
AX88796B
Host Addr
A[5:0]
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10
11
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F
SD[15:8]
SD[7:0]
AX88796B
CSR Offset
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
(DP)
X
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
(DP)
X
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
no effect
To Offset 0
To Offset 1
To Offset 2
To Offset 3
To Offset 4
To Offset 5
To Offset 6
To Offset 7
To Offset 8
To Offset 9
To Offset A
To Offset B
To Offset C
To Offset D
To Offset E
To Offset F
(DP)
X
To Offset 12 12
To Offset 13 13
To Offset 14 14
To Offset 15 15
To Offset 16 16
To Offset 17 17
To Offset 18 18
To Offset 19 19
To Offset 1A 1A
To Offset 1B 1B
To Offset 1C 1C
To Offset 1D 1D
To Offset 1E 1E
To Offset 1F 1F
SA0
SA1
SA2
SA3
SA4
SA5/FIFO_SEL
AEN/PSEN
SD[15:0]
RDn
WRn
IRQ
A0
A1
A2
A3
A4
A5
AEN
DATA[15:0]
IORDn
IOWRn
INT
ISA
AX88796B