AMD SB600 Technical Reference Manual page 231

Power Management Capabilities – R – 16 bits – [PCI_Reg: 52h]
Field Name
Version
PME Clock
Reserved
Device Specific
Initialization
Aux Current
D1 Support
D2 Support
PME Support
Power Management Control/Status – RW – 32 bits – [PCI_Reg: 54h]
Field Name
Power State
Reserved
PME Enable
Reserved
PME Status
Reserved
Field Name
Capability ID
Next Capability Pointer
Field Name
MSI Enable
Multiple Message Capable
Multiple Message Enable
64 Bit Address Capability
Reserved
©2008 Advanced Micro Devices, Inc.
AMD SB600 Register Reference Manual
Bits Default
2:0 010b
3 0b
4 0b
5 0b
8:6 001b
9 0b
10 0b
15:11 11001b
Bits Default
1:0 0h
7:2 00h
8 0b
14:9 00h
15 0b
31:16 0000h
MSI Capability ID – R – 16 bits – [PCI_Reg: 60h]
Bits Default
7:0 05h
15:8 00h
MSI Message Control – RW - 16 bits – [PCI_Reg: 62h]
Bits Default
0 0b
3:1 0h
6:4 0h
7 1b
15:8 00h
Description
Hardwired to 010b. Indicates this function complies with
Revision 1.1 of the PCI Power Management Interface
Specification
Hardwired to "0". Indicates that no PCI clock is required for
the function to generate PME#.
Reserved
Hardwired to "0". Indicates that no device specific
initialization is required.
Hardwired to 001b. Indicates 55mA maximum suspend well
current is required in the D3cold state.
Hardwired to "0". Indicates D1 state is not supported.
Hardwired to "0". Indicates D2 state is not supported.
Hardwired to 11001b. Indicates PME# can be generated
from D0 and D3 states.
Description
This field is used both to determine the current power state
and to set a new power state of the HD Audio controller.
Reserved
Enables the function to assert PME#.
This bit is in resume well and only cleared on power-on
reset.
Reserved
This bit set when HD Audio controller asserts the PME#
signal, it is independent of the PME Enable bit.
Writing a "1" clears this bit.
This bit is in resume well and only cleared on power-on
reset.
Reserved
Description
Hardwired to 05h. Indicates MSI Capability.
Hardwired to "0". Indicates this is the last capability
structure in the list.
Description
Enables MSI if set to "1".
Hardwired to "0". Indicates support for one message only.
Hardwired to "0". Indicates support for one message only.
Hardwired to "1". Indicates the ability to generate 64-bit
message address.
Reserved
Proprietary
HD Audio Controllers Registers
Page 231