Register Description
3.6.2.3
Offset 308h: PWR_DATREG – Power Budgeting
Data Register (D0:F0, F2)
Offset:
Default Value: 00000000h
308 – 30Bh
Attribute: RO
Size: 32 bits
This register returns a DWORD Power Budgeting Data selected by the Data Select Register
(DSEL, offset 304h). Each DWORD of the Power Budgeting Data describes the power usage of the
Intel® 6700PXH 64-bit PCI Hub. The Intel® 6700PXH 64-bit PCI Hub reports its power
consumption for Power Management states: D0, D3; Types: idle, sustained and max; Power rails:
12V, 3.3V, 1.8V and thermal.
Bits
Type
Reset
Description
31:21
20:18
RO
RO
0
0
Reserved.
Power Rail (PWR_R): Specifies the power rail of the operating condition being
described. Defined encodings applicable to the Intel® 6700PXH 64-bit PCI
Hub are:
0000b = 12V
001b = 3.3V
010b = 1.8V
111b = Thermal
17:15
RO
0
Type (TYPE): Specifies the type of the operating condition being described.
Defines encodings are:
010b = Idle
011b = Sustained
111b = Maximum
14:13
12:0
RO
RO
0
0
PM State (PMST): Specifies the Power Management state of the operating
condition being described. Defines encodings are:
00b = D0
11b = D3
Reserved.
3.6.2.4
Offset 30Ch: PWR_BUDREG – Power Budgeting
Capability Register (D0:F0, F2)
Offset:
Default Value: 0h
30Ch
Attribute: RO, RWO
Size: 8 bits
This register indicates the Power Budgeting capabilities of the Intel® 6700PXH 64-bit PCI Hub.
Bits
Type
Reset
Description
7:1
0
RO
0
0
Reserved.
RWO
System Allocated (SYSA): When set to a 1, this bit indicates that the power
budget for the Intel® 6700PXH 64-bit PCI Hub is included within the system
power budget. Reported Power Budgeting Data for this device should be
ignored by software for power budgeting decisions if this bit is set to a 1.
Intel® 6700PXH 64-bit PCI Hub Datasheet
127
INTEL [ INTEL ]
