Graphics, Video, and Display (D2:F0)
9.4.30
PM_CAP—Power Management Capabilities Register
Register Address:
Default Value:
D2h–D3h
0022h
Attribute:
Size:
RO, R/W
16 bits
Default
Bit
and
Description
Access
00h
RO
PME Support (PMES): The Intel Graphics Media Adapter does not
generate PME#.
15:11
10
0
RO
D2 Support (D2S): The D2 power management state is not supported.
D1 Support (D1S): The D1 power management state is not supported.
Reserved
0
RO
9
000b
RO
8:6
Device Specific Initialization (DSI): Hardwired to 1 to indicate that
special initialization of the Intel Graphics Media Adapter is required before
generic class device driver is to use it.
1
RO
5
00b
RO
4:3
2:0
Reserved
010b
RO
Version (VS): Indicates compliance with PCI Power Management
Specification, Revision 1.1.
9.4.31
PM_CTL_STS—Power Management Control/Status
Register
Register Address:
Default Value:
D4h–D5h
0000h
Attribute:
Size:
RO, R/W
16 bits
Default
Bit
and
Description
Access
0000h
RO
15:2
Reserved
Power State (PS): This field indicates the current power state of
graphics and can be used to set graphics into a new power state. If
software attempts to write an unsupported state to this field, the data is
discarded and no state change occurs.
00b
R/W
1:0
00 = D0 (Default)
01 = D1 (Not supported)
10 = D2 (Not supported)
11 = D3
Datasheet
115
INTEL [ INTEL ]
