DDR4电路设计及布局布线分析

Design and Layout Analysis of DDR4 Circuit

随着嵌入式应用的性能需求越来越高,DDR的应用越来越广泛。新一代DDR的速率越来越高,电路设计过程中需要考虑的因素也越来越多,信号完整性设计变得越来越重要。且DDR的Debug过程非常繁琐,信号测试变得越来越困难,越来越不准确,而且很难验证。从DDR4实际布局布线出发,介绍了DDR4布局布线方面的部分关键点及注意事项。

With the high performance requirement of embedded applications,DDR is widely used.The speed of the new generation of DDR is getting higher and higher,and there are more and more factors to be considered in circuit design,so signal integrity design becomes more and more important.Moreover,the Debug process of DDR is very tedious,and signal testing becomes more and more difficult,more and more inaccurate,and difficult to verify.Starting from the actual layout and wiring of DDR4,this paper introduces some key points and matters needing attention in layout and wiring of DDR4.