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Compressor with external GPIO control input

Question asked by Yeti1512 on Dec 6, 2009
Latest reply on Dec 18, 2009 by JeradL

Hi @ all,

for my audio project with the ADAU1701 I need a compressor with an external "trigger" input.

The audio power amplifier I used (TDA1562Q) has a "diagnostic" pin. This is an o/c output which is activated during the distortions of the speaker output signal rises up to more than 1%. I will use a GPIO pin as input for this diagnostic pin (incl. a resistor for pull up) and a compressor block with external detection input which limits the signal depending from the frequency of the diagnostic pulses. The simple question is how to connect this GPIO input to the external detection pin of the compressor block for correct working.