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