I have a question about DDR4 training sequence, and hope someone can give me some information.
As I know, there will be training sequence at system boot. (In my system, it's called 1D/2D training, I'm not sure if that's a standard term or it's the specific term for this controller).
My understanding is, the controller will get a "working condition" through this training process (the working condition is a suitable Vref and RD/WR timing).
Is that a standard procedure for all the DDR4 DIMM?
How do I train a DDR4 memory module?