Change sample rate on board EVAL ADAU1452 REVBZ AD1938 to 96Khz

Hello Leithor,

The instructions in the user guide are for having SigmaStudio control the codec not the DSP. I think I mention it in there somewhere that you could modify it so the DSP could boot up the codec but that complicate the program a little. 

So you should be able to read the settings of the codec and do something like mute the ADC or the DACs from the register settings and the codec will follow. Or change the clock setting and see the clock conflict with the DSP or some other reaction. However, since you can read data it looks like that is all working great.

I will attach the actual program I used when I wrote the user guide. So this was tested and worked when I did the mod and took the pictures. Some of the other posts you read explain about setting up the sampling rate in SigmaStudio and there are a few details to take care of. Test this first and then we can look at your project once we know the hardware is working properly. 

I did not look at your project. I noticed your post when I went onto my computer for something else. It is 8PM here on the east coast. :) So try this project and see what happens. 

Dave T

Basic Test Project with Codec at 96kHz I2S.dspproj

Hello Dave, Sorry to interrupt.

I'm currently working on a 96KHz project, so I thought I could share the project and settings quickly.

Hi Leithor,

This is applicable if all the modifications for controlling the codec mentioned in ADAU1452 user guide were done. please refer the below settings.

DSP as Master and CODEC as slave. please look below.

ADC as Master and serial input port as slave and serial output port as master and DAC as slave. please look at the below settings.

Please look at the ADC's LRCLK out:

If you want to put the board in standalone mode (if slave), then you have to ground the SPI pins. Please look below.

project_at_96KHz.dspproj

Regards,

Harish

Thank you so much Harish, this information solved the configuration issue with the CODEC AD1938