148
2.12.5 Power Saving
Idle
The power is saved by putting the CPU into
idle state
when event standby status is detected by
either the terminal or application running on the terminal. The peripheral devices are in operating
state while the CPU is in the idle state.
Auto Power OFF (APO)
The power is automatically turned off (“APO”) if no key input, no disk access, or no
communication is made during a preset time period. Setting the APO function enabled or disabled,
and a time period to activate the function can be performed using the System Library.
The functions of the System Library relevant to the Auto Power OFF (APO) are as follows.
SysDisableAPO
:
Sets up “Disable” for turning off the power automatically.
SysEnableAPO
:
Sets up “Enable” for turning off the power automatically.
SysGetAPO
:
Retrieves “Enable” or “Disable” status for turning off the power automatically.
Dimming and ABO (Auto Backlight OFF)
The backlight is automatically dimmed or turned off if no key input, no disk access, no
communication, and etc., is made during the preset time period. Setting a time period before
starting dimming or turning off the backlight (Auto Backlight OFF), and “Enable” or “Disable” on
the dimming and the Auto Backlight OFF functions can be set at the Control Panel.
CPU Clock Frequency Control
The CPU clock frequency is changed to one of the frequencies described in the following table
depending on the CPU load or user designation. It can be changed at the Control Panel or using
the System Library. The default is “AUTO”. Note however that the CPU frequency is not changed
to 13 MHz in the Auto mode if WLAN operation has been set effect.
Table 2.115
Mode Frequency
POWERSAVE 208 MHz
NORMAL
312 MHz
TURBO 624
MHz
AUTO
Automatically changes frequency to 104, 208, 312, 624, or 60 MHz depending
on the CPU load.
The functions of the System Library relevant to the “CPU Clock Frequency Control” are as
follows.
SysSetCPUMode
:
Sets up the CPU frequency control.
SysGetCPUMode
:
Retrieves the status of the CPU frequency control.
SysSetDefaultCPUMode
:
Returns the CPU speed setting to the factory default.
Summary of Contents for IT-800 Series
Page 173: ...173 Copyrights Tab This tab is for displaying the OS copyright information Figure 3 19 ...
Page 201: ...201 Date Tab This tab is for setting display format of date Figure 3 56 ...
Page 247: ...247 4 2 Games The terminal comes with two games Solitaire and Bubble Breaker Figure 4 2 ...
Page 255: ...255 4 5 Calculator The application can be used to operate nine digit calculator Figure 4 11 ...