Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
| ID | Date | Version | Classification |
|---|---|---|---|
| 615146 | 08/09/2019 | 1.2 | Public |
Device Capabilities 2 (DCAP2) – Offset 64
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 30:20 | - | - | Reserved
|
| 19:18 | 10b | RW/O | Optimized Buffer Flush/Fill Supported (OBFFS) 00b - OBFF is not supported. |
| 17:12 | - | - | Reserved
|
| 11 | 1b | RW/O | LTR Mechanism Supported (LTRMS) A value of 1b indicates support for the optional Latency Tolerance Reporting (LTR) mechanism capability. |
| 10:6 | - | - | Reserved
|
| 5 | 1b | RO | ARI Forwarding Supported (AFS) ARI Forwarding Supported (AFS): Applicable only to Switch Downstream Ports and Root Ports; must be 0b for other Function types. This bit must be set to 1b if a Switch Downstream Port or Root Port supports this optional capability. |
| 4 | 1b | RO | Completion Timeout Disable Supported (CTDS) A value of 1b indicates support for the Completion Timeout Disable mechanism. |
| 3:0 | 7h | RO | Completion Timeout Ranges Supported (CTRS) This field indicates device support for the optional Completion Timeout programmability mechanism. This mechanism allows system software to modify the Completion Timeout value. |