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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 158
Reserved – 8 bits - [PM_Reg: 57h]
Field Name Bits Default Description
Reserved 7:0 00h
Reserved
Reserved – 8 bits - [PM_Reg: 58h]
Field Name Bits Default Description
Reserved 7:0 00h
Reserved
MiscOption - RW – 8 bits - [PM_Reg: 59h]
Field Name Bits Default Description
MaskAc97[1:0] 1:0 00b Setting the bit will mask out the ac97 PCI configuration space
(function 5, 6)
SataClkSelect 2 0b 0-external clock, 1-shared with PCIE 100MHz clock
AzEnable 3 1b 1 – Enable HD AUDIO module
0 – Disable HD AUDIO module
AzSnoopEnable 4 0b When set, HD AUDIO data transfer will not cause the
BM_STS bit to be set and to wake up the CPU from C3 state.
This is used when previous version of SB did not have C
state pop-up/down function. With the new pop-up/down
function in SB600, this function is not necessary and should
not be enabled if the C-state pop-up/down is enabled.
Gpio5ShutdownEn 5 0b Shutdown system if seeing a negative edge on Gpio5
Reserved 7:6 00b
MiscOption register
SmiSciSts0 - RW – 8 bits - [PM_Reg: 5Ah]
Field Name Bits Default Description
GeventStatus 7:0 00h These bits indicate the SMI# status of the eight general
purpose event signals if they are configured to generate SMI#
followed by SCI
SmiSciSts0 register
SmiSciSts1 - RW – 8 bits - [PM_Reg: 5Bh]
Field Name Bits Default Description
LEventStatus 0 0b This bit indicates the SMI# status of the legacy power
management logic if it is configured to generate SMI#
followed by SCI
TwarnStatus 1 0b This bit indicates the SMI# status of the Temperature Caution
input if it is configured to generate SMI# followed by SCI
Reserved 2 0b
USBStatus 3 0b This bit indicates the SMI# status of the PME# from the
internal USB controller if it is configured to generate SMI#
followed by SCI
AC97Status 4 0b This bit indicates SMI# status of the PME# from the internal
ac97 controller if it is configured to generate SMI# followed by
SCI
OtherThermStatus 5 0b This bit indicates the SMI# status of OtherTherm from NB,
fan, etc. if it is configured to generate SMI# followed by SCI
GPM9Status 6 0b This bit indicates the SMI# status of GPM[9] if it is configured
to generate SMI# followed by SCI
PCIeHotPlugStatus 7 0b This bit indicates the SMI# status of PCIeHotPlug if it is
configured to generate SMI# followed by SCI
SmiSciSts1 register