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关于6657的DDR3初始化问题

Other Parts Discussed in Thread: TMS320C6657

最近我在调试自制6657板子的DDR3初始化,发现一个很奇怪的现象,百思不得其解,我分别用GEL和KEYSTONE DDR3 INIT 在6657EVM开发板上做DDR3初始化,是没有问题的,我用同样的GEL在自制板上做DDR3初始化也OK(验证过,DDR3读写都正常,数据没有自跳变),可是问题来我,为什么我用同样的KEYSTONE DDR3 INIT在自制板上做DDR3初始化老是不成功,老是报错(DDR3 leveling has failed, STATUS = 0x40000064)呢?我对过GEL和KEYSTONE DDR3 INIT 的参数是一样的!