How to Reduce Crosstalk in a PCB Layout
If the space in a pcb board is fixed and there are limited number of routing space on the board, what can i do in order to reduce crosstalk, because the traces are tightly coupled which can lead to noise issues. In this case it is a High Speed Board.
Solution
I recommend using a multi-layer PCB with the adjacent layer below the TOP layer made of a full solid ground reference plane. Plus, I would not recommend to use a copper pour on the top layer when using the inner layer reference plane.
