VT82C686B
I/O Space Power Management- Registers
I/O Space System Management Bus Registers
Offset System Management Bus Default Acc
Offset Basic Control / Status Registers
1-0 Power Management Status
3-2 Power Management Enable
5-4 Power Management Control
6-7 -reserved-
Default Acc
0000
0000
0000
00
0
1
2
3
4
5
6
7
8
9
SMBus Host Status
00
00
00
00
00
00
00
00
WC
RW
RW
—
WC
RW
RW
RW
RW
RW
RW
RW
RW
RO
RW
RO
—
SMBus Slave Status
SMBus Host Control
SMBus Host Command
SMBus Host Address
SMBus Host Data 0
SMBus Host Data 1
SMBus Block Data
B-8 Power Management Timer
C-F -reserved-
0000 0000 RW
00
—
Offset Processor Registers
13-10 Processor and PCI Bus Control
14 Processor LVL2
15 Processor LVL3
16-1F -reserved-
Default Acc
0000 0000 RW
SMBus Slave Control
SMBus Shadow Command
00
00
00
00
00
RO
RO
—
A-B SMBus Slave Event
C-D SMBus Slave Data
E-F -reserved-
0000
0000
00
Offset General Purpose Registers
21-20 General Purpose Status
23-22 General Purpose SCI Enable
25-24 General Purpose SMI Enable
26-27 -reserved-
Default Acc
0000
0000
0000
00
WC
RW
RW
—
Offset Generic Registers
29-28 Global Status
2B-2A Global Enable
2D-2C Global Control
2E -reserved-
Default Acc
0000
WC
RW
RW
—
0000
0010
00
2F SMI Command
00
RW
WC
33-30 Primary Activity Detect Status
37-34 Primary Activity Detect Enable
3B-38 GP Timer Reload Enable
3C-3F -reserved-
0000 0000
0000 0000 RW
0000 0000 RW
00
—
Offset General Purpose I/O Registers
40 Extended I/O Trap Status
41 -reserved-
Default Acc
00
00
WC
—
42 Extended I/O Trap Enable
43 -reserved-
00
00
RW
—
44 External SMI / GPI Input Value
45 SMI / IRQ / Resume Status
46-47 -reserved-
input
00
00
RO
RO
—
4B-48 GPI Port Input Value
4F-4C GPO Port Output Value
50-FF -reserved-
input
03FF FFFF
RO
RW
—
00
Revision 1.71 June 9, 2000
-34-
Register Overview
ETC [ ETC ]
