Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
ID | Date | Version | Classification |
---|---|---|---|
615146 | 08/09/2019 | 1.2 | Public |
Message Signaled Interrupt Identifiers; Message Signaled Interrupt Message Control (MID_MC) – Offset 80
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
30:24 | - | - | Reserved
|
23 | 0b | RO | 64-Bit Address Capable (C64) Capable of generating a 32-bit message only. |
22:20 | 000b | RW | Multiple Message Enable (MME) These bits are RW for software compatibility, but only one message is ever sent by the root port. |
19:17 | 000b | RO | Multiple Message Capable (MMC) Only one message is required. |
16 | 0b | RW | MSI Enable (MSIE) If set, MSI is enabled and traditional interrupt pins are not used to generate interrupts. CMD.BME must be set for an MSI to be generated. If CMD.BME is cleared, and this bit is set, no interrupts (not even pin based) are generated. |
15:8 | 90h | RW/O | Next Pointer (NEXT) Indicates the location of the next capability in the list. |
7:0 | 05h | RO | Capability ID (CID) Capabilities ID indicates MSI. |