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请问am335X rcp与rtt的电阻是怎么确定阻值大小的?



 

 

请问这里的rcp与rtt的电阻是怎么确定阻值大小的?

我看参考电路给的是33欧姆,但不知道是怎么来的,还请知道的告知下,非常感谢。