82801FB Datasheet, PDF (566/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

SMBus Controller Registers (D31:F3)
15.1.6
15.1.7
15.1.8
15.1.9
PI—Programming Interface Register (SMBus—D31:F3)
Offset Address: 09h
Default Value: 00h
Attribute:
Size:
RO
8 bits
Bit
7:0 Reserved
Description
SCC—Sub Class Code Register (SMBus—D31:F3)
Address Offset: 0Ah
Default Value: 05h
Attributes:
Size:
RO
8 bits
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
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
15:5
4:1
0
Reserved — RO
Base Address — R/W. This field provides the 32-byte system I/O base address for the ICH6 SMB
logic.
Reserved — RO
IO Space Indicator — RO. Hardwired to 1 indicating that the SMB logic is I/O mapped.
566
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet