Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
| ID | Date | Version | Classification |
|---|---|---|---|
| 615146 | 08/09/2019 | 1.2 | Public |
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. |