So why would you use one over the other? I'm curious if it boils down to if you need to split the clock ie div/2 or div/4 for other components that need specific frequencies. Or is it a synchronous vs. asynchronous thing?
So if I'm planning on doing Synch I want the exact multiple of 48Khz/44Khz. And for Async I can basically use anything within the DACs acceptable range ie <=50Mhz for ES9023 and <=100Mhz for ES9018? It's all starting to "click".