I can't make the SPDIF input and/or output work on my EVAL-ADAU1442EBZ. I've made the small project described on the "Quick start guide" which works but when I replace the analog inputs and outputs with SPDIF, it doesn't work. I use the coaxial connectors and the switch is at the correct position. Are there more settings to adjust? I think the clock might have to sync on the input, right? Is there more information (or examples) available for the EVAL-ADAU1442EBZ board?