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©2008 Advanced Micro Devices, Inc.
SMBus Module and ACPI Block (Device 20, Function 0)
AMD SB600 Register Reference Manual Proprietary Page 167
SMAF1 – RW – 8 bits – [PM_Reg:81h]
Field Name Bits Default Description
SMAF1 register
SMAF2 – RW – 8 bits – [PM_Reg:82h]
Field Name Bits Default Description
S1SMAF 2:0 011b System management action field for S1 STPCLK message
Reserved 3 0b
S3SMAF 6:4 100b System management action field for S3 STPCLK message
Reserved 7 0b
SMAF2 register
SMAF3 – RW – 8 bits – [PM_Reg:83h]
Field Name Bits Default Description
NSSMAF 2:0 101b System management action field for Normal Throttling
STPCLK message
Reserved 3 0b
TTSMAF 6:4 101b System management action field for Thermal Throttling
STPCLK message
Reserved 7 0b
SMAF3 register
WakePinCntl – RW – 8 bits – [PM_Reg:84h]
Field Name Bits Default Description
WakePinEnable 0 1b Set to 1 to enable wakeup from WAKE#/GEVENT#[8] pin
WakePinAsGEvent 1 0b Set to 1 to use WAKE#/GEVENT#[8] pin as GEvent, replacing
GPIO0
WakeOut 2 0b Output data for wake pin
WakeOutEnB 3 1b Output enable for wake pin (active low)
WakePinStatus 4 0b Input status for wake pin
Reserved 7:5 000b
WakePinCntl register
CF9Rst – RW – 8 bits – [PM_Reg:85h]
Field Name Bits Default Description
Reserved 0 0b
SysRst 1 0b 0: Send INIT HT message
1: Reset as specified by bit3
RstCmd 2 0b Write with 1 to generate reset as specified by bit[3,1]
Write only, always read as 0
FullRst 3 0b 0: Assert reset signals only
1: Place system in S5 state for 3 to 5 seconds
Reserved 7:4 0h
CF9Rst register
ThermThrotCntl – RW – 8 bits – [PM_Reg:86h]
Field Name Bits Default Description
Therm2SecDelay 0 0b Enable 2 second delay for thermal clock throttle