Software Functional Overview 3-27
Note:
The battery life depends on the system
configuration. The battery life becomes shorter with the CD-
ROM running or the PMU disabled. The battery life is
extended with document key-in only or if the PMU is
enabled.
Battery Warning
When the battery capacity remains at 8% (Windows 98 default is 10%), the
M38867 generates a battery warning SMI.
n
The Power LED light is yellow.
n
The system issues a warning (3 beeps).
Battery Low
When the battery capacity remains at 3% (Windows 98 default is 3%), the
system generates a battery low SMI.
n
The Power LED light is amber.
n
The system enters Suspend-To-Disk mode even when the power
management is disabled.
n
The power-on and Resume functions are inhibited until the battery low
condition is removed.
AC Adapter
When you plug in the AC adapter, the following occurs:
n
The battery charges.
n
The Battery Charging Indicator is lit while the battery is in charging
mode.
n
The power management function is disabled if the Power Management
Mode setup parameter is set to Battery Only.
n
The Battery Warning and Battery Low conditions are removed.
PIC16C62 – uP
The micro controller PIC16C62 acts as a supplement for power management
control. It supports many functions via SMBus interface.
System Communication with PIC16C62
The system communicates with PIC16C62 via SMBus interface. The SMBus
host (M38867) is initialized before starting the transaction. The following is the
procedure for system communication with PIC16C62.
