Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
Power Management Capability; PCI Power Management Capabilities (PMCAP_PMC) – Offset a0
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31:27 | 11001b | RO | PME Support (PMES) Indicates PME# is supported for states D0, D3HOT and D3COLD. The root port does not generate PME#, but reporting that it does is necessary for legacy Microsoft operating systems to enable PME# in devices connected behind this root port. |
26 | 0b | RO | D2_Support (D2S) The D2 state is not supported. |
25 | 0b | RO | D1_Support (D1S) The D1 state is not supported. |
24:22 | 000b | RO | Aux_Current (AC) Reports 0mA (self-powered), as use of this controller does not add to suspect well power consumption. |
21 | 0b | RO | Device Specific Initialization (DSI) Indicates that no device-specific initialization is required. |
20 | - | - | Reserved
|
19 | 0b | RO | PME Clock (PMEC) Indicates that PCI clock is not required to generate PME#. |
18:16 | 011b | RO | Version (VS) Indicates support for Revision 1.2 of the PCI Power Management Specification. |
15:8 | 00h | RO | Next Capability (NEXT) Indicates this is the last item in the list. |
7:0 | 01h | RO | Capability Identifier (CID) Value of 01h indicates this is a PCI power management capability. |