Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2
ID | Date | Version | Classification |
---|---|---|---|
834576 | 10/10/2024 | 001 | Public |
Message Signaled Interrupt Message (MC) – Offset 82
This is the Message Signaled Interrupt Message registers. Refer description for each individual field below for more details of the register functionality.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
15:8 | 0h | RO | Reserved (RSVD_M) Reserved. |
7 | 1h | RO | 64 Bit Address Capable (C64) Capable of generating a 32-bit message only. |
6:4 | 0h | RW | Multiple Message Enable (MME) These bits are RW for software compatibility, but only one message is ever sent by the root port. |
3:1 | 0h | RO | Multiple Message Capable (MMC) Only one message is required. |
0 | 0h | 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. |