GE864-QUAD V2 Hardware User Guide
1vv0300841 Rev.5
–
2017-05-11
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights
Reserved.
Page 58 of 77
11.5.
Using the RFTXMON Output GPIO5
The GPIO5 pin, when configured as RFTXMON Output, is
controlled by the GE864-QUAD Automotive V2 module and will
rise when the transmitter is active and fall after the
transmitter activity is completed.
There are 2 different modes for this function:
1)
Active during all the calls:
For example, if a call is started, the line will be HIGH
during all the conversation and it will be again LOW after
hanged up.
The line rises up 300ms before first TX burst and will became
again LOW from 500ms to 1s after last TX burst.
2)
Active during all the TX activity:
The GPIO is following the TX bursts
Please refer to the AT User interface manual for additional
information on how to enable this function.
11.6.
Using the Alarm Output GPIO6
The GPIO6 pad, when configured as Alarm Output, is controlled
by the module and will rise when the alarm starts and fall
after the issue of a dedicated AT command.
This output can be used to power up the module controlling
micro controller or application at the alarm time, giving you
the possibility to program a timely system wake-up to achieve
some periodic actions and completely turn off either the
application and the module during sleep periods, dramatically
reducing the sleep consumption to few
μ
A.
In battery-powered devices this feature will greatly improve
the autonomy of the device.
NOTE:
During RESET the line is set to HIGH logic level.
