板子上有3颗无源晶振,分别供给4378的主时钟,RTC时钟和以太网PHY芯片时钟
不知道这三个晶振的负载电容和频偏多少比较合适
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板子上有3颗无源晶振,分别供给4378的主时钟,RTC时钟和以太网PHY芯片时钟
不知道这三个晶振的负载电容和频偏多少比较合适