Intel® Core™ Ultra Series 3 Processors I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872352 | 04/14/2026 | 001 | Public |
Latency Tolerance Reporting Override 2 (LTROVR2) – Offset 404
This is the Latency Tolerance Reporting Override 2 registers. Refer description for each individual field below for more details of the register functionality.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 7 | 0h | RO | Reserved |
| 6 | 0h | RW | Device LTR Requirement Policy For L1.2 (DVLTRRPL1P2) This registers determine the Requirement Policy for LTR when Device LTR does not receive. This resultant LTR requirement will use to determine Power Management handling for L1.2 transition. |
| 5 | 0h | RW | Device LTR Requirement Policy For L1.1 (DVLTRRPL1P1) This registers determine the Requirement Policy for LTR when Device LTR does not receive. This resultant LTR requirement will use to determine Power Management handling for L1.1 transition. |
| 4 | 0h | RW | Device LTR Requirement Policy For L1.0 & L1.Low (DVLTRRPL1P0) This registers determine the Requirement Policy for LTR when Device LTR does not receive. This resultant LTR requirement will use to determine Power Management handling for L1.0 / L1.Low transition. |
| 3 | 0h | RW/L | LTR Override Policy (LTROVRPLCY) This register bit defines the LTR override behavior when the respective LTR Override Enable bits are set. |
| 2 | 0h | RO | Reserved |
| 1 | 0h | RW/L | LTR Non-Snoop Override Enable (LTRNSOVREN) When this bit is set, the latency tolerance values for this port will be overridden to the values programmed in the LTRNSLOVRV, LTRNSLSOVRV and LTRNSROVR fields. The latency values from the LTR messages received from the devices will be ignored. |
| 0 | 0h | RW/L | LTR Snoop Override Enable (LTRSOVREN) When this bit is set, the latency tolerance values for this port will be overridden to the values programmed in the LTRSLOVRV, LTRSLSOVRV and LTRSROVR fields. The latency values from the LTR messages received from the devices will be ignored. |