ditigal input and output connection for adau1761
Dear ADI experts,
I'm trying to apply some digital audio processing with sigmadsp, initially working on a EVAL-ADAU1x61EBZ board.
The signal flow would be like: raw I2S digital data --> adau1761 I2S input interface --> adau1761 digital processing --> adau1761 I2S digital ouput -> external off chip DAC.
My question is, how should I connect it from the hardware schematic for this I2S input/ouput, as from the schematic I saw only one I2S port is there. And could I get some document guide for configuring this interface in the sigmastudio? Thanks in advance.
Regards,
RD
Audio Signal Processors
SigmaDSP Audio Processors
adau1761
Hello,
You can see the details of the digital input routing on the ADAU1761 here: https://wiki.analog.com/resources/tools-software/sigmastudio/toolbox/io/input#adau1761_serial_input_port_routing
The details of the output routing are here: https://wiki.analog.com/resources/tools-software/sigmastudio/toolbox/io/output#adau1761
Basically, for I2S, which is 2 channels, use inputs 2 and 3, and outputs DIG0 and DIG1.
You also need to configure the serial port (as master or slave) as shown here in the Hardware Configuration Tab:
And you should also make sure that the pins are setup as serial data port pins, not GPIO:
I made an example project here that you can use as a starting point: https://wiki.analog.com/resources/tools-software/sigmastudio/tutorials?&#adau1761-compatible_example_projects
Here is the direct download link: Pass I2S audio input directly to the output via the DSP, with the serial port in master mode.
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