Intel® Core™ Ultra 200V Series Processors SOC I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 831520 | 09/03/2024 | 001 | Public |
Power Management Control & Status (PCS) – Offset 54
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:24 | 0h | RO | State Dependent Data (DT) Does not apply. Hardwired to 0's. |
| 23 | 0h | RO | Bus Power/Clock Control Enable (BPCCE) Does not apply. Hardwired to 0. |
| 22 | 0h | RO | B2/B3 Support (B23) Does not apply. Hardwired to 0. |
| 21:16 | 0h | RO | Reserved (Zero) (RSVD21) SW must use zeros for writes. |
| 15 | 0h | RW/1C | PME Status (PMES) This bit is set when the ACE IP would normally assert the PME# signal independent of the state of the PMEE bit. |
| 14:13 | 0h | RO | Data Scale (DSCA) This field indicates the scaling factor to be used when interpreting the value of the Data register. |
| 12:9 | 0h | RO | Data Select (DSEL) This 4-bit field is used to select which data is to be reported through the Data register and Data_Scale field |
| 8 | 0h | RW | PME Enable (PMEE) When set, and if corresponding PMES is also set, the Intel HD Audio subsystem will send PME to wake up the system. |
| 7:4 | 0h | RO | Reserved (Preserved) (RSVD7) SW must preserve the original value when writing. |
| 3 | 1h | RO | No Soft Reset (NSR) When set ('1'), this bit indicates that devices transitioning from D3hot to D0 because of PowerState commands do not perform an internal reset. Configuration Context is preserved. Upon transition from the D3hot to the D0 Initialized state, no additional operating system intervention is required to preserve Configuration Context beyond writing the PowerState bits. |
| 2 | 0h | RO | Reserved (Preserved) (RSVD2) SW must preserve the original value when writing. |
| 1:0 | 0h | RW | Power State (PS) This field is used both to determine the current power state of the ACE IP (host space) and to set a new power state. The values are: |