Intel® Core™ Ultra 200S and 200HX Series Processors SOC I/O Registers
ID | Date | Version | Classification |
---|---|---|---|
834819 | 01/29/2025 | 001 | Public |
ACPI Timer Control (ACPI_TMR_CTL) – Offset 18fc
This register allows software to disable the ACPI Timer, which could result in power savings.
This register is in the CORE power well and is reset by RSMRST#
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31:2 | 0h | RO | Reserved |
1 | 0h | RW | ACPI Timer Disable (ACPI_TIM_DIS) This bit determines whether the ACPI Timer is enabled to run. Note that even when enabled, the timer only runs during S0. |
0 | 0h | RW/1S/V | ACPI Timer Clear (ACPI_TIM_CLR) Writing a 1 to this bit will clear the ACPI Timer to all 0s. Hardware will automatically clear the bit back to 0 once the timer clear operation has completed.Writing a 0 to this bit has no effect. The SOC is capable of honoring this bit even while ACPI_TIM_DIS=1. |