More information about S1D13700

Hello there,

I'm trying to use S1D13700F01 controller. I can only hope one of you had to deal with this. I read the data sheet provided by EPSON and didn't understood entirely how it works.
I have a question about how layers are connected with SAD1, SAD2, SAD3 (I use notations from the data sheet). I saw that the controller has some registers to choose the number of layers (2 or 3) and which SADx you want to use. I know that you write display data to SADx but I don't know which SAD belongs to which layer.
If I use 2 layers which SAD is used to write layer1 and which for layer2 ?

I hope I was clear enough.

Thank you,
Bogdan