Avago Technologies LSI8751D - Manual (Page 90)

3-26 PCI Functional Description
PMES PME Support [15:11]
This field is always set to 00000b because the
LSI53C875E does not provide a PME signal.
D2S D2 Support 10
This device does not support the D2 power management
state, and this bit is set to zero.
D1S D1 Support 9
This device does not support the D1 power management
state, and this bit is set to zero.
R Reserved [8:6]
DSI Device Specific Initialization 5
This bit is set to 0 to indicate that the device requires no
special initialization before the generic class device driver
is able to use it.
APS Auxiliary Power Source 4
Because the device does not provide a PME signal, this
bit always returns a 0. This indicates that no auxiliary
power source is required to support the PME signal in the
D3cold power management state.
PMEC PME Clock 3
This bit always returns a zero value because the devices
do not provide a PME signal.
VER Version [2:0]
This field is set to 001b to indicate that the device
complies with Revision 1.0 of the PCI Power
Management Interface Specification.
Register: 0x44
Power Management Control/Status
Read/Write
This register applies to the LSI53C875E only and indicates the power
management control and status descriptions.
15 14 13 12 9 8 7 2 1 0
PST DSCL DSLT PEN R PWS
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0