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Programmer’s Reference Manual 67
AC ’97 Audio Controller Registers (D30:F2)
2.1.5 RID—Revision Identification Register (Audio—D30:F2)
Offset: 08h Attribute: RO
Default Value: See bit description Size: 8 Bits
Lockable: No Power Well: Core
2.1.6 PI—Programming Interface Register (Audio—D30:F2)
Offset: 09h Attribute: RO
Default Value: 00h Size: 8 bits
Lockable: No Power Well: Core
2.1.7 SCC—Sub Class Code Register (Audio—D30:F2)
Address Offset: 0Ah Attribute: RO
Default Value: 01h Size: 8 bits
Lockable: No Power Well: Core
2.1.8 BCC—Base Class Code Register (Audio—D30:F2)
Address Offset: 0Bh Attribute: RO
Default Value: 04h Size: 8 bits
Lockable: No Power Well: Core
Bit Description
7:0
Revision ID — RO. Refer to the Intel
®
I/O Controller Hub 7 (ICH7) Family Specification Update for
the value of the Revision ID Register.
Bit Description
7:0 Programming Interface — RO.
Bit Description
7:0
Sub Class Code (SCC) — RO.
01h = Audio Device
Bit Description
7:0
Base Class Code (BCC) — RO.
04h = Multimedia device