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Software Functional Overview
necessary.
3.6.9 AC Adapters and Power Source Objects
The Power Source objects describe the power source used to run the system.
Object Description
_PSR Returns present power source device
_PCL List of pointers to powered devices.
z _PSR
Returns the current power source devices. Used for the AC adapter and is located under the
AC adapter object in name space. Used to determine if system is running off the AC adapter.
Arguments:
None
Results code: 0x00000000 = Off-line; 0x00000001 = On-line
z _PCL
This object evaluates to a list of pointers, each pointing to a device or a bus powered by the
power source device. Pointing a bus means that all devices under the bus is powered by it
power source device.
3.7 Battery Management
This notebook supports only Li-Ion Battery Pack. There is only one battery pack activating at
one time. The special designed Bridge Battery module can backup the system under Suspend
To RAM mode for a short period of time.
3.7.1 Battery Sub-system
The charger will stop charge the battery when the following condition is detected.
• The temperature of the system is too high
• Battery reading methodology is through PMU08 SMBus
• Battery Life is around 2.5 to 3 Hours.(T.B.D)
L Note that the battery life depends on different configuration running. (e.g. the
battery life is shorter with CDROM running, the battery life is longer with
document keyin only; battery life is short while PMU disabled, battery life is
longer while PMU enabled.)
3.7.2 Battery Low Warning
When the battery capacity remains 8%, the PMU08 will generate a battery warning SMI. The
system will do the following action.
− The Power LED Indicator will continually blinking with 1 Hz.
− The system issues a warning beep (3 beeps at once)
3.7.3 Battery Low
When the battery capacity remains 3%, the system will generate a battery low SMI. The
system will do the following action.
3-34 FIC M295 / M296 Service Manual