Sequential (159) binding

https://johnchihau.blogspot.com/2026/06/take-look_0805870548.html?m=1

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Ref: https://johnchihau.blogspot.com/2026/08/before-we-start-you-might-read-this.html?m=1

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John : Before we start,  you might read it. https://johnchihau.blogspot.com/2026/08/before-we-start-you-might-read-this.html?m=1 . It said,  If each Clock cycle,  the data is same,  Clock line isn't needed. 

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Me: Ok.

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John : Now,  see the 1st Picture.  Wifi 1,2,3,4 are at different phase.

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Me: In this case, input-Clock line can't work. Why? If input is only allowed during Up cycle of the clock line,  wifi2,4 will never be input. 

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John: True. In this case,  only output-clock line is accepted. 

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Me: Yes,

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John: Now,  see the 3rd picture.  The register of Wifi1 doesn't have the input-Clock line. 

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1) If each Clock cycle,  the data is same,  the input-Clock line isn't needed. 

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2) If each wifi are at different phase,  the input-Clock line isn't needed.