AMD SB600 User Manual
Page 105
©2008 Advanced Micro Devices, Inc.
SMBus Module and ACPI Block (Device 20, Function 0)
AMD SB600 Register Reference Manual
Proprietary
Page 105
GPIO_64_to_61_Cntrl - RW – 16 bits - [PCI_Reg: 56h]
Field Name
Bits
Default
Description
GPIO_64_to_61_Cntrl register
ASFSMbusIoBase- RW - 16 bits - [PCI_Reg: 58h]
Field Name
Bits
Default
Description
ASFSMBusEnable
0
0h
0 – Disable ASF controller
1 – Enable ASF controller
Reserved 3:1
000b
ASFSMBase
15:4
FFFh
ASF SM bus controller Io base address
GPIO_73_to_70_Cntrl - RW – 16 bits - [PCI_Reg: 5Ah]
Field Name
Bits
Default
Description
GPIO_Out
3:0
0h
Write 1 to set and 0 to clear each of the GPIO port ; providing
the corresponding GPIO_OUT_En# and GPIO_Enable are set
appropriately
Bit[0] for GPIO70/REQ3#
Bit[1] for GPIO71/REQ4#
Bit[2] for GPIO72/GNT3#
Bit[3] for GPIO73/GNT4#
GPIO_Out_En#
7:4
Fh
GPIO output port enable for each of the GPIO port
0: Output = GPIO_Out
1: Output = tristate
GPIO_Status
11:8
-
GPIO input status for each of the GPIO port
GPIO_Enable
15:12
0h
GPIO function enable for each of the GPIO port
When set, the pin becomes GPIO
0: GPIO disabled
1: GPIO enabled
GPIO_73_to_70_Cntrl register
SmartPowerControl1A - RW – 8 bits - [PCI_Reg: 5Ch]
Field Name
Bits
Default
Description
CheckLpc
0
0b
If SmartVoltEnable is set and this bit is also set, the
SmartPower function will only assert SmartVolt if LPC is idle
CheckAz
1
0b
If SmartVoltEnable is set and this bit is also set, the
SmartPower function will only assert SmartVolt if HD audio is
idle
CheckAc97
2
0b
If SmartVoltEnable is set and this bit is also set, the
SmartPower function will only assert SmartVolt if AC97 is idle
CheckPciBridge
3
0b
If SmartVoltEnable is set and this bit is also set, the
SmartPower function will only assert SmartVolt if HD Audio
PCIBridge is idle
CheckUsb
4
0b
If SmartVoltEnable is set and this bit is also set, the
SmartPower function will only assert SmartVolt if USBis idle
CheckSata
5
0b
If SmartVoltEnable is set and this bit is also set, the
SmartPower function will only assert SmartVolt if SATA is idle
CheckIde
6
0b
If SmartVoltEnable is set and this bit is also set, the
SmartPower function will only assert SmartVolt if IDE is idle
CheckC3
7
0b
If SmartVoltEnable is set and this bit is also set, the
SmartPower function will only assert SmartVolt if CPU is in C3
state
SmartPowerControl1A register