Обнаружил при эксперименте с кодеками, соединенными в одну цепочку. Привожу ответ TI. Может быть кому-то будет полезно.
Dear Customer, We apologize for the time needed to investigate on this issue.
It has been decided that this issue will be simulated by the design team. However, we currently do not have the resources to quickly provide an answer or results. As of this moment, we cannot provide a specific time frame in which this investigation will be complete.
We did other tests and found out that it seems this issue is present when an odd number of AIC14’s are preceding AIC24’s. If an even number of AIC14’s precedes AIC24’s, the issue apparently is not present.
As mentioned before, if you is currently planning a new design with the AIC14+AIC24 combination, we strongly suggest having only AIC24’s in the cascade chain. Alternatively, the AIC3106, AIC33 or AIC34 can be set for TDM operation for up to 8 channels in the bus.
Thank you again for your patience.
Texas Instruments European Customer Support Center