1 / 25 DDR3 布局布线 译自 飞思卡尔官方文档 Hardware Development Guide for i.MX 6Quad, 6Dual, 6DualLite, 6Solo Families of Applications Processors IMX6 Serial Layout Recommendations 2 / 25 目录 1. DDR 原 理 性 连 接 框 图 ......................................................................................................... 3 2. DDR 布 局 布 线 规 则 ............................................................................................................. 4 3. DDR 布 线 细 节 ..................................................................................................................... 6 3.1 数据线的交换 ............................................................................................................. 6 3.2 DDR3(64bits)T 型拓扑介绍 ................................................................................... 6 3.3 DDR3(64bits)Fly‐by 型拓扑介绍 ......................................................................... 6 3.4 2GB DDR 布局布线建议 ............................................................................................. 6 3.5 4GB DDR 布局布线建议 ............................................................................................. 7 4. DDR 布 局 布 线 实 例 ............................................................................................................. 8 4.1 4 片 DDR T 型拓扑实例 ............................................................................................. 9 4.2 8 片 DDR Fly‐by 型拓扑实例 ................................................................................. 13 5. 高速信号布 线 建议 ........................................................................................................... 20 6. 地平面设计建议 ............................................................................................................... 20 7. DDR POW ER 布 线 建议...