Other Parts Discussed in Thread: DS125DF1610
DS125DF1610 在设置分频时,0x18设置为0x10 进行2分频,CDR locked.
但设置为4, 8分频,CDR就不能Locked. 请帮忙看看什么原因?还是有其它地方需要进行设置?
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Other Parts Discussed in Thread: DS125DF1610
DS125DF1610 在设置分频时,0x18设置为0x10 进行2分频,CDR locked.
但设置为4, 8分频,CDR就不能Locked. 请帮忙看看什么原因?还是有其它地方需要进行设置?
回读一下寄存器0X18的值,看分频系数是否配进去了。 不会因为分频系数的设定导致unlock。
恩,切换到眼图下面,High level Page那里,使用manual mode 试试呢?把 PPM tolerance设置成最大.Reg 0x67[7] = 1 and Reg 0x64[7:4] = 1111试试。