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dsp时钟及28335



您好:

  我看到dsp2808的PLL可以选择倍频10倍,那我晶振输入为20M的话,主频岂不是变为200M了?但是又说2808的主频是100M,这个怎么理解啊?倍频和晶振频率之间的关系是不是有限制?谢谢!

另外使用28335的话,一定要用ccs4.0版本吗?谢谢!

祝好!