Introduction

This user guide explains the recommended printed circuit board (PCB) layout design for the Trion® DDR DRAM interface signals. You should implement these best practices as well as understand your PCB layout options when designing applications that incorporate DDR DRAM modules. Good signal integrity (SI) is important because poorly transmitted signals can significantly lower the data valid margin at the receiver. Generally, you should place and route high-speed components and signals on the board first, and use the shortest trace lengths you can.