AD9081 Tx link status failed

Hi,

Can you please make sure you are following the instructions given in the user guide UG-1829 on pages 20 and 21?

AD9081/AD9082/AD9986/AD9988 User Guide (Rev. 0) (analog.com)

You can restart the waveform playback by clicking the stop button, unchecking "Init hold off" , Download and play again. 

If the problem persists, please try another use case (preferably one that uses JESD204B) from the dropdown list. 

Thanks Umesh.

I am indeed following UG-1829 and have doubled checked that I have followed all the steps. The issue becomes apparent once I reach Fig. 26 in UG-1829 - the green tick next to the "Link 0" in the DPG software is a red cross for me and I cannot get a DAC output.

As per your suggestion, I have tried all the default use cases in the ACE drop down menu and found that the JESD204B does work fine but all of the JESD204C cases have this same problem.

In all cases the ADC side works fine, just the DACs fail to work in the JESD204C cases.

Is there any solution to this? Can the DAC only be operated in JESD204B ? JESD204C is essential for our application

what is the version of ace and the ad9081 plugin you are using?

I am using ACE version 1.24.3095.1398, plugin version 1.2021.33300

Thanks

Hi, I am using the same versions as well

The mode works for me. Can you please send over the register log? You can see it in the chip view

Can you also please make sure that the DPGLite interface is showing the correct link parameters? Here is my example setup with a 1MHz desired frequency on top of the default 1.9GHz NCO frequency

When i loop that DAC output back to the ADC input, i get this

Thanks Umesh.

I tried again this morning with no luck. My chip view looks like this, I believe the JRX link status should be green?

In DPGlite I see this

And here's my register log:

2022-02-23 10-31-25.txt

I am still having a lot of problems with this. I have managed to get the DAC to work twice, but the vast majority of the time it fails as described in this post.

It seems highly irratic and perhaps dependent on the order that operations are done in ACE/DPG. In any case, I have only managed to get it to work twice and both times I am fairly sure I followed the same procedure. I have not managed to get it to work since, despite following the steps to the letter in UG-1829.

It is proving highly disruptive to our project so some help would be appreciated.

Thanks.

I appear to have at least temporarily solved this problem. I first program a JESD204B mode, then switch to a JESD204C mode. Then the JRX link status goes green on the Tx side and it works.

If I program a JESD204C mode directly then it does not work. Appears to be a bug with ACE or DPG lite.

Can you please use the bug reporting feature in ACE by clicking on "report issue" button in the GUI? I am not able to replicate the issue on my side, for whatever reason.