Motorola Mobility LLC T56KT1 User Manual
Chapter 2: Hardware Interface Description
December 15, 2009
G30 - Module Hardware Description
17
Turning the G30 Off Using PWR_ON
The PWR_ON signal is set high using an internal pull up resistor when power is applied to G30.
Asserting the PWR_ON signal low for a minimum of 3 seconds will turn G30 off. This will
initiate a normal power-off process, which includes disabling of all applications interfaces
(UART, SIM card, audio, etc.) and closing the network connection.
Asserting the PWR_ON signal low for a minimum of 3 seconds will turn G30 off. This will
initiate a normal power-off process, which includes disabling of all applications interfaces
(UART, SIM card, audio, etc.) and closing the network connection.
illustrates the power-off timings when using the PWR_ON signal.
Figure 2-5: PWR_ON Power Off Timing
Power Loss shut down
A low power shut down occurs when G30 senses the external power supply is below the minimal
operating limit. The module will respond by powering down automatically without notice.
operating limit. The module will respond by powering down automatically without notice.
This form of power-down is not recommended for regular use since the unexpected power loss
may result in loss of data.
may result in loss of data.
Turning the G30 Off Using AT+MRST
The AT+MRST command initiates a G30 system reset operation, which powers off the G30. This
command emulates the PWR_ON signal operation for power off.
command emulates the PWR_ON signal operation for power off.