Power Management Setup - Kontron cPCI-MXS64GX Technical Reference Manual

cPCI-MXS64GX Technical Reference Manual

4.1.8 Power Management Setup

This part of the setup configures power conservation options.
BIOS
Option
Defaults
ACPI Function Dis.
Power User
Management Def.
PM Control by Yes
APM
V/H SYNC
Video Off Method
+
Blank
Video Off After Standby
Doze Mode Dis.
Standby Mode Dis.
Suspend Mode Dis.
HDD Power Down Dis.
HDD Down When En.
Suspend
Throttle Duty Cycle 75.0%
PCI / VGA Dis.
Act-Monitor
Soft-OFF by Instant-off
PWR-BTTN
Setup Possible
Defaults Settings
En. En./Dis.
User User Define,
Def. Min Saving,
Max Saving
Yes Yes, No
V/H SYNC
Blank Screen
+
V/H
Blank
SYNC+Blank,
DPMS,
Standby NA, Suspend,
Standby, Doze,
Dis Disable
1min to 1h
Dis. Disable
1min to 1h
Dis. Disable
1min to 1h
Dis. Disable
1-15min
En. En./Dis.
75.0% 12.5%-75.0%
Dis. En./Dis.
Instant-off Instant-off,
Delay 4 sec.
4.10
Description
The Advanced Configuration and Power Interface (ACPI) allows
Operating System Direct Power Management (OSPM) and make
advanced configuration architectures possible.
When Enabled, the OS supports ACPI or OSPM (e.g., Win98, and
Windows 2000
Note: When Enabled, and the OS is ACPI compliant, the OS
setting take precedence over all settings in this menu.
This option allows you to select the type (or degree) of power
saving for Doze, Standby, and Suspend modes.
Max Saving: Maximum power savings. Inactivity period is 1
minute in each mode.
Min Saving: Minimum power savings. Inactivity period is the
maximum setting in each mode (1 hour for Doze, Standby and
Suspend).
User Define: Set each mode individually. Select time-out periods
in the PM Timers section (see below).
If Yes, the OS can control the PM by APM calls. If No, the BIOS
will control the PM (Power Management)
Determines the manner in which the monitor is blanked.
V/H SYNC + Blank: System turns off vertical and horizontal
synchronization ports and writes blanks to the video buffer.
DPMS Support: Select this option if your monitor supports the Display
Power Management Signaling (DPMS) standard of the Video
Electronics Standards Association (VESA). Use the software supplied
for your video subsystem to select video power management values.
Blank Screen: System only writes blanks to the video buffer.
As the system moves from lesser to greater power-saving modes,
select the mode in which you want the monitor to blank.
After the selected period of system inactivity (1 minute to 1 hour), the
CPU clock runs at lower speed while all other devices still operate at full
speed.
After entering Doze mode and the selected period of system inactivity
(1 minute to 1 hour) has elapsed, the video shuts off while all other
devices still operate at full speed.
After entering Standby mode and the selected period of system
inactivity (1 minute to 1 hour) has elapsed, all devices including the
CPU shut off and the system waits for an event to wake them up again.
After the selected period of drive inactivity (1 to 15 minutes), the hard
disk drive powers down while all other devices remain active. The HDD
power down mode is only available if the hard drive has this capability.
When Enabled and the system goes in Suspend Mode, the hard disk is
shut down.
When the system enters Doze mode, the CPU clock runs only part of
the time. You may select the percentage of time that the clock
does not run. When 12.5% is selected, the CPU is running at nearly
Full Speed and if 75% is selected, the CPU will be idle 75% of time.
When Enabled, continuous video activity restarts the global timer for
Standby mode.
This option only works with an ATX power supply. It allows two
configurations for the power button: Instant-off for power supply on/off
switch, or Delay 4 sec. for entering Suspend Mode after pressing the
button at least 4 seconds.