sequential (86) RJ45 Port C Port D

https://wodewangzhishime.blogspot.com/2021/09/httpswodewangzhishime_10.html

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Ref: https://kamchihau.blogspot.com/2022/10/httpskamchihau_28.html?m=1 

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John: I explain the 1st picture. When Port D is outputing, Port C is with the status of being input.

Me:OK.

John: Look at the 2nd picture. When Port C is outputing, Port D is with the status of being input.