Power Management; Acpi; Table 3. Effects Of Pressing The Power Switch - Intel CD1M3128MK Technical Product Specification

1.12

Power Management

Power management is implemented at several levels, including:
 Software support through Advanced Configuration and Power Interface (ACPI)

Hardware support:
 Power Input
 Instantly Available PC technology
 Wireless LAN wake capabilities
 Wake from USB (When plugged into a compatible device)
 Wake from S5
1.12.1

ACPI

ACPI gives the operating system direct control over the power management and Plug and Play
functions of a computer. The use of ACPI with this Compute Card requires an operating system
that provides full ACPI support. ACPI features include:

Plug and Play (including bus and device enumeration)
 Power management control of individual devices
 A Soft-off feature that enables the operating system to power-off the Compute Card
 Support for multiple wake-up events (see Table 5 on page 18)
Table 3 lists the system states based on how long the power switch is pressed, depending on how
ACPI is configured with an ACPI-aware operating system. Support is only available when the
Compute Card is plugged into a compatible device's Compute Card slot.

Table 3. Effects of Pressing the Power Switch

If the system is in this state...
Off
(ACPI G2/G5 – Soft off)
On
(ACPI G0 – working state)
On
(ACPI G0 – working state)
Sleep
(ACPI G1 – sleeping state)
Sleep
(ACPI G1 – sleeping state)
Note: Depending on power management settings in the operating system.
16
...and the power switch is pressed for
Less than four seconds
Less than four seconds
More than six seconds
Less than four seconds
More than six seconds
...the system enters this state
Power-on
(ACPI G0 – working state)
Soft-off/Standby
(ACPI G1 – sleeping state) Note
Fail safe power-off
(ACPI G2/G5 – Soft off)
Wake-up
(ACPI G0 – working state)
Power-off
(ACPI G2/G5 – Soft off)