Thank you very much FvM for you answer.
Sorry for my stupidly mistake on BCK. But may you explain more that LRCK is frame synchronization.
For my understand, I have to shift all off my L-Channel audio during '1' of LRCK and R-Channel during '0' of LRCK.
But what I would like to ask is when my digital data is ready to be sent, which I don't know when on this time diagram,
are there better way to create timing diagram than use latch to detect rising egge of LRCK then count variable parameter and shift Din to meet BCK timing.
Thank you in advance.