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[FAQ] Trouble Writing Memory Block at

Q:调试自己画的DM8168时,想用CCS5.4和JTAG调试DDR是否正确,连接板子出现如下错误,GEL文件显示CortexA8: Output: EVM816x DDR2/3 PRCM Init is Done ..... DDR3初始化完成了,后面就出错了,出错为CortexA8: Trouble Writing Memory Block at 0x4c000010 on Page 0 of Length 0x4: (Error -2130 @ 0x4C000010) Unable to access device memory.
gel文件其他好的板子测试都是可以的,这个板子出问题。

A: Trouble Writing Memory Block at…此类问题通常是memory的软件配置问题或者硬件问题。Memory的软件配置问题可以先检查GEL文件中的配置。上述问题的GEL文件在其他板子上测试是好的,说明软件配置没问题,那就要检查硬件问题是否有虚焊,粘连等焊接问题以及DDR layout是否严格按照手册要求布线的。经排查,上述Trouble Writing Memory Block at…报错是由于DDR硬件电路有一个排阻坏了引起的。