Intel G640T CM8062301002204 User Manual

Datasheet, Volume 2

105

31:16

RO

0h

15

RO

0b

Uncore

PME Status (PMESTS)
This bit indicates that this device does not support PME# 

generation from D3cold.

14:13

RO

00b

Uncore

Data Scale (DSCALE)
This field indicates that this device does not support the power 

management data register.

12:9

RO

0h

Uncore

Data Select (DSEL)
This field indicates that this device does not support the power 

management data register.

8

RW

0b

Uncore

PME Enable (PMEE)
This bit indicates that this device does not generate PME# 

assertion from any D-state.
0 = PME# generation not possible from any D State

1 = PME# generation enabled from any D State
The setting of this bit has no effect on hardware.
See PM_CAP[15:11]

7:4

RO

0h

3

RO

1b

Uncore

1 = Device is transitioning from D3hot to D0 because the power 

state commands do not perform an internal reset. 

Configuration context is preserved. Upon transition, no 

additional operating system intervention is required to 

preserve configuration context beyond writing the power state 

bits.

0 = Devices do not perform an internal reset upon transitioning 

from D3hot to D0 using software control of the power state 

bits.

Regardless of this bit, the devices that transition from a D3hot to 

D0 by a system or bus segment reset will return to the device state 

D0 uninitialized with only PME context preserved if PME is 

supported and enabled.

2

RO

0h