3-26 Software Functional Overview
Power States Transition Event
The following table summarizes the entry and wake-up events of each power
state:
Transition Events
Power State
Entry Event
Wake Up Event
S1
OSPM* control
Predefined Mem/IO range access
Ring Indicator
Keystroke
IRQ1-15
SMI# / ACPI SCI# / USB
S2
OSPM control
Predefined Mem/IO range access
Battery Warning
Battery Low
Ring Indicator
Keystroke (Int., Ex. And USB keyboard )
Mouse movement
Schedule Alarm
SMI# / ACPI SCI# / USB
S3
OSPM control
Sleep Button
Lid Close
Sleep Button
Ring Indicator
Schedule Alarm
Lid Open
PME#
Battery Low
S4
OSPM control
Fn + Sleep
Button
Sleep Button
Ring Indicator
Schedule Alarm
PME#
S5
OSPM control
* OSPM: OS-directed Power Management.
Battery Management
The following section describes battery management indicators.
Battery Subsystem
The AMBER supports both the Li-Ion and the Ni-MH Battery Pack. Only one
battery pack is activated at a time.
n
The charger will stop charging the battery with following conditions:
The temperature of the system is too high
The battery voltage is too high.
n
Battery Life — 2.5 to 3 Hours.
n
Battery reading methodology is through M38867 SMBus.