Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
| ID | Date | Version | Classification |
|---|---|---|---|
| 615146 | 08/09/2019 | 1.2 | Public |
Capabilities List; PCI Express Capabilities (CLIST_XCAP) – Offset 40
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 30 | - | - | Reserved
|
| 29:25 | 00h | RO | Interrupt Message Number (IMN) The root port does not have multiple MSI interrupt numbers. |
| 24 | 0b | RW/O | Slot Implemented (SI) Indicates whether the root port is connected to a slot. Slot support is platform specific. BIOS programs this field, and it is maintained until a platform reset. |
| 23:20 | 4h | RO | Device / Port Type (DT) Indicates this is a PCI-Express root port |
| 19:16 | 2h | RO | Capability Version (CV) Version 2.0 indicates devices compliant to the PCI Express 2.0 specification which incorporates the Register Expansion ECN. |
| 15:8 | 80h | RW/O | Next Capability (NEXT) Indicates the location of the next capability. |
| 7:0 | 10h | RO | Capability ID (CID) Indicates this is a PCI Express capability |