307013-003 Datasheet, PDF (586/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

SMBus Controller Registers (D31:F3)
14.1.6
PI—Programming Interface Register (SMBUS—D31:F3)
Offset Address: 09h
Default Value: 00h
Attribute:
Size:
RO
8 bits
14.1.7
Bit
7:0 Reserved
Description
SCC—Sub Class Code Register (SMBUS—D31:F3)
Address Offset: 0Ah
Default Value: 05h
Attributes:
Size:
RO
8 bits
14.1.8
Bit
Sub Class Code (SCC) — RO.
7:0
05h = SM Bus serial controller
Description
BCC—Base Class Code Register (SMBUS—D31:F3)
Address Offset: 0Bh
Default Value: 0Ch
Attributes:
Size:
RO
8 bits
14.1.9
Bit
Base Class Code (BCC) — RO.
7:0
0Ch = Serial controller.
Description
SMB_BASE—SMBUS Base Address Register
(SMBUS—D31:F3)
Address Offset: 20–23h
Default Value: 00000001h
Attribute:
Size:
R/W, RO
32-bits
Bit
Description
31:16 Reserved — RO
15:5
Base Address — R/W. This field provides the 32-byte system I/O base address for the
Intel^® ICH7 SMB logic.
4:1 Reserved — RO
0 IO Space Indicator — RO. Hardwired to 1 indicating that the SMB logic is I/O mapped.
586
Intel ^® ICH7 Family Datasheet