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C6655 DDR3 LEVELING,所用DDR型号是MT41K256M16TW-107,在计算表格DDR3 Register Calc v4中找不到相关的芯片,如果将Device and speed grade设置成User Defined,其他参数就被锁定了,例如T_RP我需要修改为13.91,不知道需要怎么操作?SDCFG Configuration中的参数CL,我需要修改为13,可是下拉菜单中最大是11,请问是不是C6655不支持该型号的DDR芯片?如果支持,我这里的CL需要怎么输入13这个值?附件是DDR3的datasheet.
User Define的参数可以在Datasheet那个表里去改。
DDR3控制器支持最大CL就是11
CAS latencies: 5, 6, 7, 8, 9, 10, and 11.
Notes: 1. The -107 speed grade is backward compatible with 1600, CL = 11 (-125) , 1333, CL = 9
(-15E) and 1066, CL = 7 (-187E).