QG82945GSE S LB2R Intel, QG82945GSE S LB2R Datasheet - Page 196
QG82945GSE S LB2R
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
Datasheet
1.AU80586GE025DSLB73.pdf
(482 pages)
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6.5.8
196
PMCFG - Power Management Configuration
B/D/F/Type:
Address Offset:
Default Value:
BIOS Optimal Default
Access:
Size:
29:5
1:0
Bit
31
30
4
3
2
RO; R/W
Access
R/W
R/W
R/W
R/W
RO
RO
Default
Value
00b
0b
0b
0b
0b
0b
0b
Reserved
Reserved
Reserved
Enhanced Power Management Features Enable:
0 = Reserved
1 = Enable
(G)MCH will use the snoop timers for determining the proper
time for allowing a power management mode transition that
was requested by ACPI software
PM_BM_BUSY# is never asserted
The allowed behavior in this mode may be restricted by the
Enhanced Power Management Mode and the Enhanced Power
Management Snoop-detect Behavior fields
Reserved
Reserved
Enhanced Power Management Mode:
This field is ignored if the Enhanced Power Management
Features Enable bit is clear
00 = All enhanced power management functions allowed
01 = Disable the C2 to C3 snoop timer based transition. Never
go past C2.
10 = Disable the C3 to C4 snoop timer based transition. Never
go past C3.
11 = Reserved
Recommended Setting = 00
Field is ignored if the Enhanced Power Management Features
Enable = 0
0/0/0/MCHBAR
F10-F13h
00040000h
0h
R/W; RO
32 bits
Description
Device 0 Memory Mapped I/O Register
Datasheet
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