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20 Programmer’s Reference Manual
Intel
®
High Definition Audio Controller Registers (D27:F0)
1.1.14 SVID—Subsystem Vendor Identification Register
(Intel
®
High Definition Audio Controller—D27:F0)
Address Offset: 2Ch–2Dh Attribute: R/WO
Default Value: 0000h Size: 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.
1.1.15 SID—Subsystem Identification Register
(Intel
®
High Definition Audio Controller—D27:F0)
Address Offset: 2Eh–2Fh Attribute: R/WO
Default Value: 0000h Size: 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.
T
Bit Description
15:0 Subsystem Vendor ID — R/WO.
Bit Description
15:0 Subsystem ID — R/WO.