Power Management
433 mainboard provides four power management modes for re
ducing power consumption : On, Doze, S leep, and Suspend. When
entering each power management mode, 433 mainboard gener
ate a distinguishable flashes via the turbo-LED.
433 main board also provide EPMI and power supply power down
connector to enchanced power management.
Power Management Modes Description
ON mode.
The
ON
mode is the normal operating mode of the
PC system. In this mode, the doze timer ( 1 5 sec to 5 1 2 m in)
starts counting when there is no activity. When the timer expire,
the system will enter into
DOZE
mode. The type of activities
monitored include Keyboard, VGA, IDE, COM port, LPT port,
Floppy, PCI master, ISA master, DMA, one programmable
memory region, and one programable 110 region.
DOZE mode.
In this mode, CPU frequency is reduce to l/2 of
.10rmal frequency and the
SLEEP
timer (2 min to 5 1 2 m in) starts
counting when there is no activity. When the timer expire, the
system will enter into
SLEEP
mode. The activities monitored
are the same as in
ON
mode.
SLEEP mode.
In this mode, CPU frequency is reduce to 8MHz.
The
SUSPEND
timer (2 min to 5 1 2 min) starts counting if there
is no activity,
and the CPU is a S- Series CPU.
When the timer
expire, the system will enter into
SUSPEND
mode. The activi
ties monitored are the same as in
ON
mode.
SUSPEND mode.
In this mode, the CPU frequency is stop at
OM Hz, external cache is power down. The CPU will Auto-Wake
Up by keyboard, mouse, modem, EPMI button, etc . . . The type of
activities for Auto-Wake-Up are programmable.
User's Manual 25
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