GE866-QUAD Hardware User Guide
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Page 58 of 82
Mod. 0805 2011-07 Rev.2
11.5.
Using the RFTXMON Output GPIO5
The GPIO5 pin, when configured as RFTXMON Output, is controlled by the GE866-
QUAD 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 the Call:
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 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/BUZZER output GPIO6
The GPIO6 has 2 alternate functions:
•
ALARM
•
BUZZER
The GPIO6 pad, when configured as
Alarm Output
, is controlled by the GE866-QUAD
module and will rise when the alarm starts and fall after the issue of a dedicated AT
command.
This output can be used to controlling microcontroller or application at the alarm
time.
