PCB DDR布局

https://blog.csdn.net/weixin_42238387/article/details/120424456

https://blog.csdn.net/qq_31444421/article/details/129828662

https://blog.csdn.net/weixin_46283037/article/details/140459216

https://www.cnblogs.com/tureno/articles/7420419.html

https://blog.csdn.net/xuhao0258/article/details/120306591

1. 点对点： DDR*1片

2. T形： DDR*2片

3. 4片

https://www.sekorm.com/news/514385976.html