MiTAC w130 Service Manual
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4 Power Management
The Tetra system has built in several powers saving modes to prolong the
battery usage. User can enable and configure different degrees of power
management modes via ROM CMOS setup (booting by pressing F2 key).
Following are the descriptions of the power management modes supported.
battery usage. User can enable and configure different degrees of power
management modes via ROM CMOS setup (booting by pressing F2 key).
Following are the descriptions of the power management modes supported.
4.1 System Management Mode
Full on mode
In this mode, each device is running with the maximal speed. CPU clock is up
to its maximum.
to its maximum.
Doze Mode
In this mode, CPU will be toggling between on & stop grant mode either. The
technology is clock throttling. This can save battery power without loosing
much computing capability.
The CPU power consumption and temperature is lower in this mode.
technology is clock throttling. This can save battery power without loosing
much computing capability.
The CPU power consumption and temperature is lower in this mode.
Standby mode
For more power saving, it turns of the peripheral components. In this mode,
the following is the status of each device:
--CPU: Stop grant
--LCD: backlight off
--HDD: spin down
Suspend to DRAM
The most chipset of the system is entering power down mode for more power
saving. In this mode, the following is the status of each device:
the following is the status of each device:
--CPU: Stop grant
--LCD: backlight off
--HDD: spin down
Suspend to DRAM
The most chipset of the system is entering power down mode for more power
saving. In this mode, the following is the status of each device:
CPU:
off
Twister K: Partial off