2D2A - ADC/DAC in 6 GSPS Real Mode Full Bandwidth

Hi, firstly I want to make few clarifications with the configuration you are trying to make

• I assume that you are looking for configuration with L=maximum(8), M=2, Interpolation=1x1.  
• The maximim ADC clock would be limited by the maximum lane rate of 24.75 GHz that can be supported by AD9081. So 6 GHz is the highest clock you can get when NP=16, and ADC clock can be higher than 6 GHz you use NP=12 or 8.
• You need to choose a mode that support L=8, M=2, and 1x1 decimation from the Table 93 (DAC Path Supported JESD 204C Modes). I see mode 18 (NP=16), 36 (NP=12). If NP=8 is acceptable to you, you can use the mode 19.

I don't see a ready made example in the API package, but there is an example that matches your target configuration in the following link. 

https://wiki.analog.com/resources/eval/user-guides/ad9081_fmca_ebz/quickstart/microblaze

One of the configuration shown in this page (https://github.com/analogdevicesinc/linux/blob/main/arch/microblaze/boot/dts/vcu118_ad9082_204c_txmode_18_rxmode_19_lr_24_75Gbps.dts) seems to be close to what you want. You should be able to add a new use case to example API software based on this configuration if that's what you need.

Hope that helps and let us know if you need further clarification.

-YH

* Yes, L = 8 and M=2 with Interpolation of 1x1
* I have ADC running at 6GSPS with NP=12 and data rate is 18.5625 GSPS.
* I have picked mode 36 for DAC and mode 28 for ADC as highlighted in the snippet.

We have the AD9082 on a custom board so have a different HAL layer and not using the uc_setting.c file instead using the API calls from the software application. Thats why I am more interested in the sequence of the API calls instead of .dts files.

Hi, I don't think API sequence in the example code that comes with the API release needs to be changer for this particular configuraiton. As I don't see settings similar to your target configuraiton in uc_settings.c, so I provided an example that may help you to add new use case. Could you review the sequency API calls in ad982_app.c in the example code?

Do you know where can I get the uc_setting.c  and ad9082_app.c file? Previously I got those from the microzed board petalinux that we bought from ADI. I had these files when I was working on the this chip but then they got misplaced, now I need to change the mode and having difficulty in making sure that what I am doing is correct.

The example application code is part of our API software release package and requires approval for access. Please reach out to your local support channel, FAE (Field Applications Engineer), or FSE (Field Sales Engineer) to request approval. If you got the approval before, you may check/download the software through myAnalog (https://my.analog.com/en/app). If you don't see the package there, please work with your local support.