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大家好 我的设计用到DSP+DDR3 DSP是6657 DDR3是镁光的MT41J128M16(CL = 11 (DDR3-1600))
TI提供的例程驱动本身就是基于镁光的MT41J128M16写的 所以DDR31066 1333都可以测试通过!!!
DDR3换为另一家西安紫光的SCB15H2G160AF-13KI(CL = 11 (DDR3-1600))
DDR3-1066可以测试通过
DDR3-1333测试通过不了 老是报异常“DDR3 leveling has failed, STATUS = 0x40000064” 表示“Read DQS Gate Training Timeout”、“Read Data Eye Training Timeout”
西安紫光的SCB15H2G160AF-13KI(CL = 11 (DDR3-1600))的和镁光的MT41J128M16(CL = 11 (DDR3-1600))看参数差别不大!
求教后续如何下手???
是每块板子都有这个问题吗?建议再从布线方面检查一下。
https://www.ti.com/lit/an/sprabi1c/sprabi1c.pdf