12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767625 | 07/13/2023 | Public |
Device Capabilities and Control (DEVICECTL_DEVICESTS) – Offset 78
PCI Express Device Capabilities and Control Register
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31:22 | 0h | RO | Reserved |
21 | 0x0 | RO/V | Transaction Pending (DEVICESTS) When Set, this bit indicates that the Function has issued Non-Posted Requests that have not been completed. A Function reports this bit is cleared only when all outstanding Non-Posted Requests have completed or have been terminated by the Completion Timeout mechanism. This bit must also be cleared upon the completion of an FLR. |
20 | 0x0 | RO | AUX Power Detected (Relax_Ord_En) Not used, always 0 |
19 | 0x0 | RW/1C/V | Unsupported Request Detected (UR_Req_Det) Unsupported Request Detected - set when IUNIT receive P/NP transaction which is UR |
18:16 | 0x0 | RO | Misc Errors (DEVICECTL_MISC_STS) Bits 2:0: Various error detected bits: The Root Complex Integrated Endpoint does not use the PCI Express error reporting mechanism. |
15 | 0x0 | RW | Initiate Function Level Reset (INIT_FLR) A write of 1b initiates Function Level Reset to the Function. The value read by software from this bit is always 0b. |
14:0 | 0x0 | RO | Misc Device Control (DEVICECTL_MISC_CTRL) The only bit set reflect Unsupported-Request-Reporting Enable |