VT82C686B

Manufacturer Part NumberVT82C686B
ManufacturerETC-unknow
VT82C686B datasheet
 


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
Page 41
42
Page 42
43
Page 43
44
Page 44
45
Page 45
46
Page 46
47
Page 47
48
Page 48
49
Page 49
50
Page 50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
Page 43/128

Download datasheet (2Mb)Embed
PrevNext
7HFKQRORJLHV ,QF
Function 5 I/O Base 0 Registers – AC97 Audio S/G DMA
Offset AC97 SGD I/O Registers
0
SGD Read Channel Status
1
SGD Read Channel Control
2
SGD Read Channel Type
3
-reserved-
7-4 SGD Read Chan Table Pointer Base
SGD Read Channel Current Address
B-8 Reserved (Test)
F-C SGD Read Chan Current Count
10
SGD Write Channel Status
11
SGD Write Channel Control
12
SGD Write Channel Type
13
-reserved-
17-14 SGD Write Chan Table Pointer Base
SGD Write Channel Current Address
1B-18 Reserved (Test)
1F-1C SGD Write Channel Current Count
20
SGD FM Channel Status
21
SGD FM Channel Control
22
SGD FM Type
23
-reserved-
27-24 SGD FM Channel Table Pointer Base
SGD FM Channel Current Address
2B-28 Reserved (Test)
2F-2C SGD FM Channel Current Count
30-7F -reserved-
Offset AC97 / Audio Codec I/O Registers
83-80 AC97 Controller Command / Status
87-84 SGD Status Shadow
88-FF -reserved-
Function 5 I/O Base 1 Registers – FM NMI Status
Offset FM NMI Status Registers
0
FM NMI Status
1
FM NMI Data
2
FM NMI Index
3
-reserved-
Function 5 I/O Base 2 Registers – MIDI / Game Port
Offset FM NMI Status Registers
1-0 MIDI Port Base
3-2 Game Port Base
Revision 1.71 June 9, 2000
Function 6 I/O Base 0 Registers – MC97 Modem S/G DMA
Default
Acc
Offset MC97 SGD I/O Registers
00
40
SGD Read Channel Status
WC
00
RW
41
SGD Read Channel Control
00
RW
42
SGD Read Channel Type
00
43
-reserved-
0000 0000 WR
47-44 SGD Read Chan Table Pointer Base
RD
SGD Read Channel Current Address
0000 0000 RO
4B-48 -reserved- (Test)
0000 0000 RO
4F-4C SGD Read Chan Current Count
00
WC
50
SGD Write Channel Status
00
RW
51
SGD Write Channel Control
00
RW
52
SGD Write Channel Type
00
53
-reserved-
0000 0000 WR
57-54 SGD Write Chan Table Pointer Base
RD
SGD Write Channel Current Address
0000 0000 RO
5B-58 Reserved (Test)
0000 0000 RO
5F-5C SGD Write Channel Current Count
00
WC
60-7F -reserved-
00
RW
Offset AC97 / Modem Codec I/O Registers
00
RW
83-80 AC97 Controller Command / Status
00
87-84 SGD Status Shadow
0000 0000 WR
8B-88 Modem Codec GPI Intr Status / GPIO 0000 0000 WC
RD
8F-8C Modem Codec GPI Interrupt Enable
0000 0000 RO
90-FF -reserved-
0000 0000 RO
00
Default
Acc
0000 0000 RW
0000 0000 RO
00
Default
Acc
00
RO
00
RO
00
RO
00
Default
Acc
0330
RW
0200
RW
-37-
VT82C686B
Default
Acc
00
WC
00
RW
00
RW
00
0000 0000 WR
RD
0000 0000 RO
0000 0000 RO
00
WC
00
RW
00
RW
00
0000 0000 WR
RD
0000 0000 RO
0000 0000 RO
00
Default
Acc
0000 0000 RW
0000 0000 RO
0000 0000 RW
00
Register Overview