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92 Programmer’s Reference Manual
AC ’97 Modem Controller Registers (D30:F3)
3.1.5 RID—Revision Identification Register (Modem—D30:F3)
Address Offset: 08h Attribute: RO
Default Value: See bit description Size: 8 Bits
Lockable: No Power Well: Core
3.1.6 PI—Programming Interface Register (Modem—D30:F3)
Address Offset: 09h Attribute: RO
Default Value: 00h Size: 8 bits
Lockable: No Power Well: Core
3.1.7 SCC—Sub Class Code Register (Modem—D30:F3)
Address Offset: 0Ah Attribute: RO
Default Value: 03h Size: 8 bits
Lockable: No Power Well: Core
3.1.8 BCC—Base Class Code Register (Modem—D30:F3)
Address Offset: 0Bh Attribute: RO
Default Value: 07h 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 — RO.
03h = Generic Modem.
Bit Description
7:0
Base Class Code — RO.
07h = Simple Communications controller.