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Confidential
Table 3-4 CHIPSET FEATURES SETUP Menu
Items
CPU Temp
Thermal Monitor
Fan Speed
Monitor
Voltage Monitor
POWER MANAGEMENT SETUP
It sets the items related to power management. Power management prolongs the battery life for
LCD backlight, HDD and other parts.
Table 3-5 POWER MANAGEMENT SETUP Menu
Items
PM Control by
APM
Throttle Duty
Cycle
Video Off
Method
HDD Power
Down Timer
Video Off Timer
Suspend Timer
Front Switch
Function
Rev.A
Description
It sets the Low Limit of Thermal Throttling by hardware.
If the setting temperature is below the Low Limit, it automatically changes CPU to Full On from
Low Power Mode. If the temperature difference with Hot Limit is too little, CPU speed changes
frequently and the performance may decrease. Also, it is necessary to set the lower
temperature than the High Limit.
Displays CPU Junction Temperature in Celsius or Fahrenheit.
Displays revolutions of CPU fan and Power Supply Fan in RPM.
Displays the Voltage of VTT(1.5V series), VCORE(2.0V series), 3.3V, 5V and12V.
Description
It enables or disables to control the power management with the APM (Advanced Power
Management) BIOS from the OS or the application. Normally set at [Yes]. If the APM driver is
included in the operating system, power management control and the automatic power off
functions can be enabled. If the APM driver is not included in the operating system, neither the
power management control nor the automatic power off functions can be enabled even if
[Yes] is set. If [No] is set, the power management control with APM BIOS Function CAll does not
function at all.
It sets a CPU Clock Duty during CPU Low Power Mode, Video Off Mode, and CPU Control Mode
by Thermal. CPU speed is slower as setting value gets bigger.
It sets the method for turning the video off with power management. Normally set at [V/H
SYNC+Blank].
V/H SYNC+Blank: Stops the vertical/horizontal sync signals and video signals from the video
controller. It is common for the display of monitors that support power management to also be
switched off when the vertical/horizontal sync signal is stopped.
DPMS: Controls the BIOS in accordance with the video controller's DPMS function
(Display Power Management System.) It is necessary for DPMS to be supported by the monitor.
Blank Only: Set when using monitors that only have a display off function and do not support
power management.
It sets the power down (stop the motor) timer for the HDD. The HDD enters the power down
mode when the system idles continuously for a pre-determined period
of time.The timer is reset if an access to the HDD head occurs within the set time. The default
setting is 15 minutes, and can be changed by in 1 minute increments. Also, it does not change
to the HDD power down mode from the Disabled setting.
It is same as Stand-by mode of general PC. CPU is in Low Power operation or Video Sub System
Power Down during this mode. Therefore, systems other than CPU and Video Sub System is in
Full On Mode. If the system is kept idle continuously, it sets or moves the Video Sub System to
Off mode after several minutes.
It sets the timer for shifting to the suspend mode. The system enters the suspend mode after
idling continuously for a pre-determined period of time. Suspend mode is not supported with
Windows NT. Normally set at [Disabled].
It sets the function of the main power switch (front switch) during the power on status. When the
front power switch is pressed during the power off status, it always turns on the SR-600.
Power Off
: Forced power off
APM Power Off
: Tells the APM BIOS that an event occurs.Usually the application uses this
notice for some operation.
The default setting is APM Power OFF.
Developer's Guide SR-600
BIOS Setup 3-7
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