QG82945GSE S LB2R Intel, QG82945GSE S LB2R Datasheet - Page 74

• Manufacturer Part Number: QG82945GSE S LB2R
• Description: GRAPHICS AND MEM CNTRL HUB; No. of Pins: 998; Package / Case: FCBGA; Interface Type: PCI, SATA, USB
• Manufacturer: Intel

4.2.5
Figure 8.
74
(G)MCH Configuration Cycle Flowchart
(G)MCH Configuration Cycle Flowchart
GMCH Generates
GMCH Generates
Type 1 Access
Master Abort
to PCI Express
Device# = 0
No
Yes
Yes
Yes
CONFIG_ADDRESS
Configuration Cycle
SECONDARYBUS
I/O Read/Write to
Bus# > SEC BUS
Bus# ≤ SUB BUS
DW I/O Write to
CONFIG_DATA
GMCH Generates
GMCH Generates
Type 0 Access
with bit 31 = 1
in GMCH Dev 1
in GMCH Dev 1
to PCI Express
DMI Type 1
Bus# = 0
Bus# =
No
No
No
Yes
(G)MCH Configuration Process and Registers
Configuration Cycle
Device# = 0 &
Function# = 0
Device# = 1 &
Dev#1 Enabled &
Function # = 0
Device# = 2 &
Dev#2 Enabled &
Function# = 0 or 1
GMCH Generates
DMI Type 0
No
No
No
Yes
Yes
Yes
GMCH Claims
GMCH Claims
GMCH Claims
Datasheet