Intel 6 SERIES CHIPSET - DATASHEET 01-2011 Datasheet page 693

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Integrated Intel High Definition Audio Controller Registers
17.1.1.22 DCKSTS—Docking Status Register (Mobile Only)
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(Intel
Address Offset: 4Dh
Default Value:
Function Level Reset: No
Bit
Docking Supported (DS) — R/WO: A 1 indicates that PCH supports HD Audio
Docking. The DCKCTL.DA bit is only writable when this DS bit is 1. ACPI BIOS software
should only branch to the docking routine when this DS bit is 1. BIOS may clear this bit
7
to 0 to prohibit the ACPI BIOS software from attempting to run the docking routines.
Note that this bit is reset to its default value only on a PLTRST#, but not on a CRST# or
D3hot-to-D0 transition.
6:1 Reserved.
Dock Mated (DM) — RO: This bit effectively communicates to software that an Intel
HD Audio docked codec is physically and electrically attached.
Controller hardware sets this bit to 1 after the docking sequence triggered by writing a
1 to the Dock Attach (GCTL.DA) bit is completed (HDA_DOCK_RST# deassertion). This
0 bit indicates to software that the docked codec(s) may be discovered using the
STATESTS register and then enumerated.
Controller hardware sets this bit to 0 after the undocking sequence triggered by writing
a 0 to the Dock Attach (GCTL.DA) bit is completed (HDA_DOCK_EN# deasserted). This
bit indicates to software that the docked codec(s) may be physically undocked.
17.1.1.23 PID—PCI Power Management Capability ID Register
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(Intel
Address Offset: 50h–51h
Default Value:
Function Level Reset: No (Bits 7:0 only)
Bit
15:8 Next Capability (Next) — R/WO. Points to the next capability structure (MSI).
Cap ID (CAP) — RO. Hardwired to 01h. Indicates that this pointer is a PCI power
7:0
management capability. These bits are not reset by Function Level Reset.
Datasheet
High Definition Audio Controller—D27:F0)
80h
High Definition Audio Controller—D27:F0)
6001h
Attribute: R/WO, RO
Size: 8 bits
Description
Attribute: R/WO, RO
Size: 16 bits
Description
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