VT82C686B
Hardware-Monitor-Specific Configuration Registers
System Management Bus-Specific Configuration Registers
Offset 71-70 – Hardware Monitor I/O Base ...................RW
Offset 93-90 – SMBus I/O Base ....................................... RW
................. default = 0
........................................always reads 0
15-7 I/O Base (128-byte I/O space)
31-16 Reserved
.......................... always reads 0000001b
................default = 00h
6-0 Fixed
15-4 I/O Base (16-byte I/O space)
................................always reads 0001b
3-0 Fixed
Offset 74 –Hardware Monitor Control ...........................RW
Offset D2 – SMBus Host Configuration ......................... RW
........................................ always reads 0
7-4 Reserved
........................................always reads 0
3
Hardware Monitoring Interrupt
7-4 Reserved
0
1
SMI .....................................................default
SCI
3
2
1
0
SMBus Interrupt Select
0
SMI .................................................... default
........................................ always reads 0
1
SCI
2-1 Reserved
0
Hardware Monitoring I/O Enable
SMBus Clock Select
0
1
Disable hardware monitor functions.......default
Enable hardware monitor functions
0
Divide down from 14.31818 MHz......... default
1
64 KHz derived from 32.768 KHz RTC clock
SMBus IRQ
0
Disable................................................... default
1
Enable
SMBus Host Controller Enable
0
Disable SMB controller functions ......... default
1
Enable SMB controller functions
Offset D3 – SMBus Host Slave Command...................... RW
..........default=0
7-0 SMBus Host Slave Command Code
Offset D4 – SMBus Slave Address for Port 1................. RW
...............default=0
7-0 SMBus Slave Address for Port 1
Bit-0 must be set to 0 for proper operation
Offset D5 – SMBus Slave Address for Port 2................. RW
...............default=0
7-0 SMBus Slave Address for Port 2
Bit-0 must be set to 0 for proper operation
Offset D6 – SMBus Revision ID ....................................... RO
7-0 SMBus Revision Code
Revision 1.71 June 9, 2000
-89-
Function 4 Regs - Power Management, SMBus and HWM
ETC [ ETC ]
