82801BA Datasheet, PDF (250/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

Hub Interface to PCI Bridge Registers (D30:F0)
Table 8-1. PCI Configuration Map (HUB-PCI—D30:F0) (Continued)
Offset
3Ch
3E–3Fh
40h
50–51h
70h
82h
90h
92h
Mnemonic
INT_LINE
BRIDGE_CNT
BRIDGE_CNT2
CNF
MTT
PCI_MAST_STS
ERR_CMD
ERR_STS
Register Name/Function
Interrupt Line
Bridge Control
Bridge Control 2
ICH2 Configuration Register
Multi-Transaction Timer
PCI Master Status
Error Command Register
Error Status Register
Default
00h
0000h
00
0000h
20h
00h
00h
00h
NOTE: Refer to the Specification Update for the value of the Revision ID Register
Type
RO
R/W
R/W
R/W
R/W
R/W
R/W
R/W
8.1.1
VID—Vendor ID Register (HUB-PCI—D30:F0)
Offset Address: 00–01h
Default Value: 8086h
Attribute:
Size:
RO
16 bits
Bit
Description
15:0 Vendor Identification Number—RO. This is a 16-bit value assigned to Intel. Intel VID = 8086h.
8.1.2
DID—Device ID Register (HUB-PCI—D30:F0)
Offset Address:
Default Value:
02–03h
244Eh (82801BA ICH2)
2448h (82801BAM ICH2-M)
Attribute:
Size:
RO
16 bits
Bit
Description
15:0
Device Identification Number—RO. This is a 16 bit value assigned to the ICH2 hub interface to
PCI bridge (i.e., Device #2).
8-2
82801BA ICH2 and 82801BAM ICH2-M Datasheet