Intel® Core™ Ultra 200V Series Processors CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 831649 | 03/30/2026 | 001 | Public |
PRS Control and Status (PRS_CONTROL_STATUS_REG) – Offset 254
PRS Control and Status Register
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31 | 0h | RO | PRG Response PASID Required (PRG_RESP_PASID_REQD) If Set the Function expects a PASID TLP Prefix on PRG ResponseMessages when the corresponding Page Requests had a PASID TLP Prefix. If Clear the Function does not expect PASID TLP Prefixes on any PRG Response Message |
| 30:25 | 0h | RO | Reserved |
| 24 | 1h | RO | PRG Request Stopped (STOPPED) When this field is Set, the associated page request interface has stopped issuing additionalpage requests and that all previously issued Page Requests have completed |
| 23:18 | 0h | RO | Reserved |
| 17 | 0h | RW/1C | Unexpected PRG Index (UNEXP_PRGI) This field, when Set, indicates that the Function has received a PRG ResponseMessage indicating a Response Failure |
| 16 | 0h | RW/1C | PRG Response failure (PRG_RESP_FAILURE) This field, when Set, indicates that the Function hasreceived a PRG Response Message containing a PRG index that has no matching request. |
| 15:2 | 0h | RO | Reserved |
| 1 | 0h | WO | PRI Reset (PRI_RESET) When the Enable field is clear, or is being cleared in the same register update that sets thisfield, writing a 1b to this field, clears the associated implementation dependent page request creditcounter and pending request state for the associated Page Request Interface.Read should always return 0 |
| 0 | 0h | RW | PRI Enable (PRI_ENABLE) This field, when set, indicates that the Page Request Interface is allowed to make pagerequests |