82801FB Datasheet, PDF (633/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

Intel^® High Definition Audio Controller Registers (D27:F0)
18.1.14
SVID—Subsystem Vendor Identification Register
(Intel^® High Definition Audio Controller—D27:F0)
Address Offset: 2C–2Dh
Default Value: 0000h
Attribute:
Size:
R/WO
16 bits
The SVID register, in combination with the Subsystem ID register (D27:F0:2Eh), enable the
operating environment to distinguish one audio subsystem from the other(s).
This register is implemented as write-once register. Once a value is written to it, the value can be
read back. Any subsequent writes will have no effect.
This register is not affected by the D3_HOT to D0 transition.
Bit
15:0 Subsystem Vendor ID — R/WO.
Description
18.1.15
T
SID—Subsystem Identification Register
(Intel^® High Definition Audio Controller—D27:F0)
Address Offset: 2E–2Fh
Default Value: 0000h
Attribute:
Size:
R/WO
16 bits
The SID register, in combination with the Subsystem Vendor ID register (D27:F0:2Ch) make it
possible for the operating environment to distinguish one audio subsystem from the other(s).
This register is implemented as write-once register. Once a value is written to it, the value can be
read back. Any subsequent writes will have no effect.
This register is not affected by the D3_HOT to D0 transition.
Bit
15:0 Subsystem ID — R/WO.
Description
18.1.16
CAPPTR—Capabilities Pointer Register (Audio—D30:F2)
Address Offset: 34h
Default Value: 50h
Attribute:
Size:
This register indicates the offset for the capability pointer.
RO
8 bits
Bit
Description
7:0
Capabilities Pointer (CAP_PTR) — RO. This field indicates that the first capability pointer offset is
offset 50h (Power Management Capability)
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
633