EVAL-ADAU1966 Data Input by SPDIF Reciever


I am planning to purchase the EVAL-ADAU1966 for a project, but there are some issues I would like to be clarified.

The 12 channel audio input (192KBps 16bit) need approx. 4.5 MB/s bandwidth. How the evaluation board can input the regarded multichannel data by SPDIF through Optical and Coax In cables? because the industry standard S/PDIF can carry compressed 7.1 surround  (such as DTS audio codec) in their maximum bandwidth, but the evaluation board seems to be able to input 16 channel by ADAU1966. 

And if the above is possible, can the optical output in modern pc motherboards be able to transfer 12/16 multi channel audio input to the evaluation board or what is the appreciated source to make the SPDIF data in it for 12 channel audio.


[edited by: Pascha at 1:36 PM (GMT 0) on 10 Sep 2019]