Winmate IH7T-RK2U, Руководство пользователя

Страница: 70 / 92

USER MANUAL CHAPTER 4 AMI BIOS SETUP
- 68 -
4.4.1 Watchdog Timer Behavior
The Advanced Configuration and Power Interface (ACPI) specification provides
open standard for device configuration and power management by the operating
system. Refer to the table below to check the description of different state:
ACPI State Descriptions
Power State
ACPI
state
Description
Working S0
The system is fully usable. Devices that are not in
use can save power by entering a lower power state.
Sleep S3
The system appears to be off. Power consumption is
reduced to one of several levels, depending on how
the system is to be used. The lower the level of
power consumption, the more time it takes the
system to return to the working state.
Hibernation S4
The system appears to be off. Power consumption is
reduced to the lowest level. The system saves the
contents of memory to a hibernation file, preserving
the state of the operating system, applications, and
open documents.
Off State S5
The system appears to be off. Some components
remain powered so the computer can wake from
input from the keyboard, LAN, or a USB device. The
working context can be restored if it is stored on
nonvolatile media.
Correspondingly, the watchdog timer behaves differently under different ACPI
states, shown in the table below.
Watchdog Timer Behavior for each ACPI state
Power State
ACPI
state
Watch Dog Behavior
Working S0
1. Supported
2. Works by having the windows application to set
the watch dog timer. When the system hangs,
and the watchdog timer times out, the watchdog
timer notify the system to shut down or reboot.
If the watchdog behavior is reboot, please
set the “Restore AC Power Loss” option to
“on”. Please refer to Chapter 11.3.
Sleep S3 Not Supported
Hibernation S4 Not Supported
Off State S5 Not Supported