Effectiveness of PCB Simulation in High Speed DDR Memory Design

Abstract

Signal integrity for high speed DDR memory design at the printed circuit board (PCB) level is very essential and important for making a robust design .This paper describes how simulation tools can be helpful for choosing best termination method and other signal integration parameter along with the design process .A Simulation tool Hyperlynx has been used for high speed digital design for DDR2 in this paper. We present DDR 2 design example in which the main approach is to get wide opened eye with minimum level of overshoot and undershoot. Hyperlynx like tools can be used at different level of design to make a robust and reliable design work. I