Hi Antonio,
We apologize for the delay on your ADAU1452 issues. This is a feature of the ADAU1452 I am not as familiar with, and there is not much documentation on it's use at the present time. I will try to get you the answers sometime in the next few days after I can discuss this issue with a few of the developers.
I would also recommend that for urgent issues that cannot wait a few days, you should probably contact your local Field Sales Engineer or Field Applications Engineer to escalate your critical issues. In some cases the expert of a particular product might be out of the office traveling or on vacation.
-JT