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82NM10 Datasheet, PDF (582/671 Pages) Intel Corporation – Intel® NM10 Family Express Chipset
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Intel HD Audio Controller Registers (D27:F0)
Bit
Description
15
14:9
8
7:2
1:0
PME Status (PMES) — R/WC.
0 = Software clears the bit by writing a 1 to it.
1 = This bit is set when the Intel HD Audio controller would normally assert the PME#
signal independent of the state of the PME_EN bit (bit 8 in this register)
This bit is in the resume well and only cleared on a power-on reset. Software must not
make assumptions about the reset state of this bit and must set it appropriately.
Reserved
PME Enable (PMEE) — R/W.
0 = Disable
1 = when set and if corresponding PMES also set, the Intel High Definition Audio
controller sets the AC97_STS bit in the GPE0_STS register (PMBASE +28h).
This bit is in the resume well and only cleared on a power-on reset. Software must not
make assumptions about the reset state of this bit and must set it appropriately.
Reserved
Power State (PS) — R/W. This field is used both to determine the current power state
of the Intel High Definition Audio controller and to set a new power state.
00 = D0 state
11 = D3HOT state
Others = reserved
NOTES:
1.
If software attempts to write a value of 01b or 10b in to this field, the write
operation must complete normally; however, the data is discarded and no state
change occurs.
2.
When in the D3HOT states, the Intel High Definition Audio controller’s
configuration space is available, but the I/O and memory space are not.
Additionally, interrupts are blocked.
3.
When software changes this value from D3HOT state to the D0 state, an internal
warm (soft) reset is generated, and software must re-initialize the function.
18.1.24 MID—MSI Capability ID Register
(Intel HD Audio Controller—D27:F0)
Address Offset: 60h–61h
Default Value: 7005h
Attribute:
Size:
RO
16 bits
Bit
Description
15:8
7:0
Next Capability (Next) — RO. Hardwired to 70h. Points to the PCI Express* capability
structure.
Cap ID (CAP) — RO. Hardwired to 05h. Indicates that this pointer is a MSI capability
582
Datasheet
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