On/Off Signal (Pin 4); On/Off Status (Pin 5); General Purpose Input Signals (Pins 10, 11); General Purpose Output Signals (Pins 12, 13) - Enfora Enabler LPP G Integration Manual

6.6.2. On/Off Signal (Pin 4)

The module may be set into a low power 'off' mode by pulling the pin low for a minimum of 3 seconds.
This will shutdown any active functions including GPS and GSM, and stop the processor. This is the
lowest power mode of the module, it can be ideally used when storing or shipping units and the controller
is not to be enabled.
Once the module is in the 'off' state, it can be turned 'on' by holding the pin low for a minimum of 3
seconds. This will start the processor, once booted the controller will be enabled and run as per the
saved settings.
The module will normally start in the 'on' state and enable the controller logic when power is applied.

6.6.3. On/Off Status (Pin 5)

When the On/Off pin is used to put the modem into an 'off' state or to turn it 'on', the status pin will
indicate when it has successfully entered either state.
When turning off the unit, the status signal is set high after the On/Off signal is sufficiently held low (3
seconds). The status signal is held high for normally 3 seconds but can stay enabled for up to 5-6
seconds if the system is waiting for the GSM modem to shut down.
When turning on the unit, the status line blinks for 3 seconds at a frequency of 4Hz.

6.6.1. General Purpose Input Signals (Pins 10, 11)

Two input pins are available for input and are configured in conjunction with the event engine of the GSM
modem. The voltage level of the signal must be in reference to the selected VIO voltage (Pin 33).

6.6.1. General Purpose Output Signals (Pins 12, 13)

Two input pins are available for output signals and are configured in conjunction with the event engine of
the GSM modem.
The voltage level of the signal must be in reference to the selected VIO voltage (Pin 33).

6.6.2. Reset Signal (Pin 24)

The Reset signal is used to force the micro-controller to start at a known state. When the Reset is pulled
low the micro-controller will immediately suspend any function and will not exit the reset state until the
reset signal is released to be pulled high. Once the transition from low to high is complete, the micro-
controller will boot. The Reset signal is falling edge triggered, so the reset function is set immediately
when the signal is pulled low.
When using Reset, it will immediately lose the connection to the GSM network, this is not considered
ideal. Typically during a normal shutdown, the module will issue a detach request to the network to
indicate that it is being removed.
LPP0108IG001 Version - Preliminary – 06/20/08
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