Intel® Core™ Ultra 200S and 200HX Series Processors SOC I/O Registers
ID | Date | Version | Classification |
---|---|---|---|
834819 | 01/29/2025 | 001 | Public |
PCI Power Management Capabilities (PMC) – Offset a2
This is the PCI Power Management Capabilities registers. Refer description for each individual field below for more details of the register functionality.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
15:11 | 19h | RO | PME States 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. |
10 | 0h | RO | D2 State Support (D2S) The D2 state is not supported. |
9 | 0h | RO | D1 State Support (D1S) The D1 state is not supported. |
8:6 | 0h | RO | Auxiallary Current (AC) Reports 375mA maximum suspend well current required when in the D3COLD state. |
5 | 0h | RO | Device Specific Initialization (DSI) Indicates that no device-specific initialization is required. |
4 | 0h | RO | Reserved |
3 | 0h | RO | PME Clock (PMEC) Indicates that PCI clock is not required to generate PME. |
2:0 | 3h | RO | PCI Power Management Specification Version (VS) Indicates support for Revision 1.2 of the PCI Power Management Specification. |