Power On/Off Operation
16 Module Hardware Description January 1, 2006
Turning the G24 On Using IGN
The IGN input signal must be set low when not used. To turn on G24, this signal must be asserted
high. The IGN signal must remain high for the duration of the G24 operation. G24 powers down
when the IGN signal is returned to its low state.
Figure 2-5 illustrates the power-on process using the IGN signal.
Figure 2-5: IGN Power On Timing
Turning the G24 Off
There are several ways to turn the G24 off:
• Asserting the ON_N signal low for a minimum of 2 seconds.
• Setting the IGN signal low.
• Low power automatic shut down.
• AT command.
Turning the G24 Off Using ON_N
The ON_N signal is set high using an internal pull up resistor when power is applied to G24.
Asserting the ON_N signal low for a minimum of 2 seconds will turn G24 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.
To Next Page
Loading...
