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chris0622
Contributor
Contributor
908 Views
Registered: ‎09-22-2019

[Synth 8-6426] mix of sync and async problems

Hi,

I have tried to find a solution on internet. but There is no solution to this kind of problem..

 

螢幕快照 2020-04-06 下午5.09.12.png

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bruce_karaffa
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894 Views
Registered: ‎06-21-2017

We can't help unless we see the code that lead to these warnings.

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chris0622
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Contributor
862 Views
Registered: ‎09-22-2019

註解 2020-04-06 221616.png註解 2020-04-06 221637.png註解 2020-04-06 221659.png註解 2020-04-06 221720.png

Thank you!

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chris0622
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Registered: ‎09-22-2019

 
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richardhead
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Registered: ‎08-01-2012

What version of vivado is this?

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chris0622
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Contributor
778 Views
Registered: ‎09-22-2019

2018.1

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richardhead
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Scholar
757 Views
Registered: ‎08-01-2012

I notice you have the "prmry_clk" for all the CDC blocks is connected to '1' - so logic is likely to be removed with the output locked at a specific value.

Have you tried 2019.2?

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