This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
大家好!
测试环境:6678+ccs5.0。
使用论坛下载的stk例程对ddr初始化,leveling测试失败,查询ddr_status寄存器的值为40000074,而4-6位分别是read DQS gate training、read data eye training、write leveling,这三位为1代表着这三个测试都timeout了。而且用ccs自带的gel文件做ddr测试时,也显示ddr memory test failed,请问这是什么原因呢?
DDR3控制器的初始化与PCB布线有关,请你参考下面的文档对你的DDR3控制器进行重新校准和初始化,另外,可以试试降频是否有改善。
http://www.ti.com/lit/an/sprabl2e/sprabl2e.pdf