MCHBAR Registers
R
92
Intel
®
82925X/82925XE MCH Datasheet
5.1.21
PMCFG—Power Management Configuration
MMIO Range:
MCHBAR
Address Offset:
F10h
Default Value:
00000000h
Access: R/W
Size: 32
bits
Bit Access
&
Default
Description
31:5
Reserved
4 R/W
0b
Enhanced Power Management Features Enable
0 = Legacy power management mode
1 = Reserved.
3:0
Reserved
5.1.22
PMSTS—Power Management Status
MMIO Range:
MCHBAR
Address Offset:
F14h
Default Value:
00000000h
Access: R/W
Size: 32
bits
This register is Reset by PWROK only.
Bit Access
&
Default
Description
31:2
Reserved
1 R/WC/S
0b
Channel B in self-refresh.
This bit is set by power management hardware after
Channel B is placed in self refresh as a result of a Power State or a Reset Warn
sequence. It is cleared by power management hardware before starting Channel
B self refresh exit sequence initiated by a power management exit. It is cleared
by BIOS in a warm reset (Reset# asserted while pwrok is asserted) exit
sequence.
0 = Channel B not guaranteed to be in self-refresh.
1 = Channel B in Self-Refresh.
0 R/WC/S
0b
Channel A in Self-refresh.
Set by power management hardware after Channel
A is placed in self refresh as a result of a Power State or a Reset Warn
sequence. It is cleared by power management hardware before starting Channel
A self refresh exit sequence initiated by a power management exit. It is cleared
by the BIOS in a warm reset (Reset# asserted while PWOK is asserted) exit
sequence.
0 = Channel A not guaranteed to be in self-refresh.
1 = Channel A in Self-Refresh.
§
Содержание 82925X
Страница 78: ...Host Bridge DRAM Controller Registers D0 F0 R 78 Intel 82925X 82925XE MCH Datasheet...
Страница 98: ...EPBAR Registers Egress Port Register Summary R 98 Intel 82925X 82925XE MCH Datasheet...
Страница 108: ...DMIBAR Registers Direct Media Interface DMI RCRB R 108 Intel 82925X 82925XE MCH Datasheet...
Страница 156: ...Host PCI Express Graphics Bridge Registers D1 F0 R 156 Intel 82925X 82925XE MCH Datasheet...
Страница 172: ...System Address Map R 172 Intel 82925X 82925XE MCH Datasheet...
Страница 192: ...Electrical Characteristics R 192 Intel 82925X 82925XE MCH Datasheet...
Страница 220: ...Ballout and Package Information R 220 Intel 82925X 82925XE MCH Datasheet Figure 12 3 MCH Package Dimensions MCH...