82801BA Datasheet, PDF (383/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

SMBus Controller Registers (D31:F3)
SMBus Controller Registers (D31:F3) 12
12.1 PCI Configuration Registers (SMBUS—D31:F3)
Table 12-1. PCI Configuration Registers (SMBUS—D31:F3)
Offset
00–01h
02–03h
04–05h
06–07h
08h
09h
0Ah
0Bh
20–23h
2C–2Dh
2E–2Fh
3Ch
3Dh
40h
Mnemonic
Register Name/Function
VID
DID
CMD
STA
RID
PI
SCC
BCC
SMB_BASE
SVID
SID
INTR_LN
INTR_PN
HOSTC
Vendor ID
Device ID
Command Register
Device Status
Revision ID
Programming Interface
Sub Class Code
Base Class Code
SMBus Base Address Register
Subsystem Vendor ID
Subsystem ID
Interrupt Line
Interrupt Pin
Host Configuration
Attribute
RO
RO
RO, R/W
RO, R/WC
RO
RO
RO
RO
R/W
RO
RO
R/W
RO
R/W
Note: Registers that are not shown should be treated as Reserved (See Section 6.2 for details).
12.1.1
VID—Vendor Identification Register (SMBUS—D31:F3)
Address:
Default Value:
00–01h
8086h
Attributes:
Size:
RO
16 bits
Bit
Description
15:0 Vendor ID Value—RO. This is a 16 bit value assigned to Intel
12.1.2
DID—Device Identification Register (SMBUS—D31:F3)
Address:
Default Value:
02–03h
2443h
Attributes:
Size:
RO
16 bits
Bit
15:0 Device ID value—RO.
Description
82801BA ICH2 and 82801BAM ICH2-M Datasheet
12-1