Intel® Core™ Ultra Series 3 Processors CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872351 | 04/14/2026 | 001 | Public |
Device Capabilities 2 (DEVCAP2) – Offset 64
Identifies additional PCI Express device Function specific capabilities.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31 | 0h | RO | Reserved |
| 30:29 | 0h | RO | DMWr Lengths Supported (DMWRLS) Indicates the largest DMWr TLP that this Function can receive. |
| 28 | 1h | RO | DMWr Completer Supported (DMWRCS) Indicates whether this function can serve as a DMWr Completer. |
| 27:24 | 0h | RO | Reserved |
| 23:22 | 1h | RO | Max End-End TLP Prefixes (MEETLPP) Indicates the maximum number of End-End TLP Prefixes supported by this Function. |
| 21 | 1h | RO | End-End TLP Prefix Supported (EETLPPS) Indicates Whether End-End TLP Prefix support is offered by a Function. |
| 20 | 1h | RO | Extended Fmt Field Supported (EFFS) If Set, the Function supports the 3-bit definition of the Fmt field. If Clear, the Function supports a 2-bit definition of the Fmt field. |
| 19:18 | 0h | RO | Reserved |
| 17 | 0h | RO | Ten-Bit Tag Requester Supported (TBTRS) Indicates the Function supports 10-Bit Tag Requester capability |
| 16 | 1h | RO | Ten-Bit Tag Completer Supported (TBTCS) Indicates the Function supports 10-Bit Tag Completer capability |
| 15:12 | 0h | RO | Reserved |
| 11 | 1h | RW | LTR Mechanism Supported (LTRMS) Indicates support for the Latency Tolerance Reporting (LTR) mechanism. |
| 10:5 | 0h | RO | Reserved |
| 4 | 1h | RO | Completion Timeout Disable Supported (CTDS) Indicates support for the Completion Timeout Disable mechanism. |
| 3:0 | 6h | RW | Completion Timeout Ranges Supported (CTRS) Completion Timeout values in Ranges B and C are supported. |