I have a problem with a new application with ADAU1701 DSP.
I would use both DSP DACs and an external CODEC, but after some tests I have the audio output on the ADAU1701 DACs or on the external CODEC DACs, but not both.
In my system I have an AK4620B CODEC as audio input ADCs and low noise stereo DACs, and I use also ADAU DAC2 and DAC3.
I have a 24.576MHz crystal and I used an internal fs=96kHz (I used your faq instruction for PLL setting), the clock output is buffered and the DSP works as master of I2S comunication (MP4 and 5 connected with MP10 and 11 each).
I have test, with a simple audio path (attached TestInternalDac.jpg) that internal DAC works properly.
Only when I check the Master Mode checkbox in the Hardware Configuration windows the output signal disappeared.
Changing the outputs to I2S data I could see the audio signal on CODEC.
So...could I work with both outputs type or is not allowed?
Or have I make something wrong?
Thanks and best Regard.
Thanks for your help...I don't use a your demoboard, but our own board.
Now I check again if there are problems in the board component/layout, but the very strange things is that each output works well alone.
I'll try to do a cross check with your demoboard design...but I'm more quite now knowing that is possible this configuration.