Datasheet

Register Description
R
Datasheet 71
3.7 Host-Hub Interface Bridge Device Registers (Device
#0, Function #0)
Table 29 summarizes the configuration space for Device #0, Function#0.
Table 29. GMCH/MCH Configuration Space - Device #0, Function#0
Register Name
Register
Symbol
Register Start
Register
End
Default
Value
Access
Vendor
Identification
VID 00 01 8086h RO
Device
Identification
DID 02 03 3580h RO
PCI Command PCICMD 04 05 0006h RO,R/W
PCI Status PCISTS 06 07 0090h RO,R/WC
Revision
Identification
RID 08 08 01h
02h
RO
Sub-Class Code SUBC 0A 0A 00h RO
Base Class Code BCC 0B 0B 06h RO
Header Type HDR 0E 0E 80h RO
Aperture Base
Configuration
APBASE 10 13 08h R/W, RO
Subsystem
Vendor
Identification
SVID 2C 2D 0000h R/WO
Subsystem
Identification
SID 2E 2F 0000h R/WO
Capabilities
Pointer
CAPPTR 34 34 40h RO
Capability
Identification
CAPID 40 44 Chipset
Dependent
RO
Registers –
RCOMP Base
Address
RRBAR 48 4B 0000h R/W, RO
GMCH Misc.
Control
GMC 50 51 0000h R/W
GMCH Graphics
Control
GGC 52 53 0030h R/W
Device and
Function Control
DAFC 54 55 0000h R/W
Fixed Dram Hole
Control
FDHC 58 58 00h R/W
Programmable
Attribute Map
PAM (6:0) 59 5F 00h Each R/W