AMC OCTO User Manual page 35

Software interface
GPIO INPUTS SETTINGS R.I
These logical inputs allow control some
DSP features by closing GPIO contacts in
rear OCTO panel. All logical inputs have
3,3V voltage formed by internal pull up
resistors. In order to activate programed
function GPIO input should be connect-
ed to GND pin. GPIO inputs can control
following OCTO features: Scene preset,
matrix, volume setting and mute. Also
available send serial command via RS232
or RS485 interface. All listed choices can
be selected in "Display Type" window.
Before the starting configuration one of the 8 GPIO outputs must be selected in
R.I column.
Below are listed common parameters for GPIO output settings.
GPIO Channel – displays selected GPIO input.
GPIO Enabled - Allows enable or disable GPIO function in selected GPIO input.
Control Type – Allow select which function will be controlled by GPIO input.
33 USER MANUAL OCTO Digital signal processor
GPIO INPUTS FUNCTIONS
Scene Setting – allows load any of eight
scene presets including default preset to
OCTO DSP. Which one preset will by load-
ed should be set in "Set the scene select"
window. "Triger type" allows set at which
moment OCTO starts load preset. "Rising
edge" parameter specifies that preset will
be loaded at the moment when logic
input and GND connection will be broken
and voltage on the input pin starts rise.
"Falling edge" parameter specifies that preset will be loaded at once when logic
input and GND will be connected together.
Take attention: During preset loading the current settings in previously preset
will not be saved.
Raising edge:
At this point of time scene loading will be started
1
1. Falling edge of signal | 2. Rising edge of signal
High level
Low level
Voltage on GPIO input
2