Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
ID | Date | Version | Classification |
---|---|---|---|
615146 | 08/09/2019 | 1.2 | Public |
Device Activity Status Register (DEVACT_STS) – Offset 44
Each bit indicates if an access has occured to the corresponding device's trap range, or for bits 6:9, if the corresponding PCI interrupt is active. This register is used in conjunction with the Periodic SMI# timer to detect any system activity for legacy power management. The periodic SMI# timer indicates if it is the right time to read the DEVACT_STS register.
Note, software clears bits that are set in this register by writing a 1 to the bit position.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
30:6 | - | - | Reserved
|
5 | 0b | RW/1C/V | D5 Trap Status (D5_TRP_STS) 0 = The corresponding I/O have not been accessed. |
4:0 | - | - | Reserved
|