Blu LIFE 8, Руководство по обслуживанию

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4.2 Power on
4.2.1 Normal Power On
The normal way of power on is press the power on key, then the PWRKEY is pulled down
and the system is powered on. At this time, all of the LDOs integrated in the PMU are
started except the VSIM and the VCORE starts the reset timer. After the time out, the reset
signal will be sent out(H), then the digital baseband will be also started. That means the
MT6592 go to the working states. It will begin polling and detecting the state of the
PWRKEY. In case of the pulling up of the PWRKEY, the power on key can be released.
This is the first process of the power on.
Power on process as follow:
4.2.2 Schedule Power On/OFF
The RTC module can also realize the power on because it can pull up the PWRKEY and
start all the LDOs. This way can be used as Schedule Power On/OFF.