82801DB Datasheet, PDF (276/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

Hub Interface to PCI Bridge Registers (D30:F0)
Table 8-1. Hub Interface PCI Configuration Register Address Map (HUB-PCI—D30:F0) (Sheet 2
of 2)
Offset
3Ch
3E–3Fh
40–43h
44–45h
50–51h
70h
82h
90h
92h
Mnemonic
INT_LINE
BRIDGE_CNT
HI1_CMD
DEVICE_HIDE
CNF
MTT
PCI_MAST_STS
ERR_CMD
ERR_STS
Register Name
Interrupt Line
Bridge Control
Hub Interface 1 Command Control
Secondary PCI Device Hiding Register
Intel^® ICH4 Configuration Register
Multi-Transaction Timer
PCI Master Status
Error Command Register
Error Status Register
Default
00h
0000h
00202802h
00
1400h
20h
00h
00h
00h
Type
RO
R/W, R/WC,
RO
R/W, RO
R/W
R/W
R/W
R/WC
R/W
R/W
NOTE: Refer to the ICH4 specification update for the value of the Revision ID Register.
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 Value—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: 02–03h
Default Value: 244Eh
Attribute:
Size:
RO
16 bits
Bit
Description
Device Identification Value — RO. This is a 16-bit value assigned to the Intel^® ICH4 hub interface
15:0 ^{to PCI bridge (i.e., Device #2).}
DID = 244Eh.
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Intel^® 82801DB ICH4 Datasheet