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6455 没用到的PLL是否都要供电?



正在做6455的电路设计

6455有两个PLL,一个是给EMIF等外设提供时钟的,一个是给EMAC和DDR2部分提供时钟的。

我的设计不需要EMAC和DDR2,我想问,这个PLL还要供电和输入时钟吗??