Originally posted by linux-dude
have made the the DDR4 design with split planes, als long as you keep the planes continous beneath the signals then it is ok. so you have to move the planes if possible.
like robert mentioned you will need at least one solid plane for GND for the project.
ik must say that whoever writes those papers, lives in the perfect world..
real life it is compromise compromise and compromise in your design.
also simulate the hell out of it