DTMFOUT work fine with a 20MHZ crystal.
If you already use a 20MHZ crystal, you may need to redesign or improve the low-Pass filter and, probably, increase the amplitude of the signal.
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DTMFOUT work fine with a 20MHZ crystal.
If you already use a 20MHZ crystal, you may need to redesign or improve the low-Pass filter and, probably, increase the amplitude of the signal.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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