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Visitor
Visitor
922 Views
Registered: ‎06-05-2018

Zynq US+ PS_DONE

Hello,

I'm searching what is the PS_DONE interface inside the zynq (Open drain...). The goal is to know if I can connect PS_DONE signal for turn ON a LED throught a transistor for exemple.

Thanks

 

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3 Replies
Scholar
Scholar
892 Views
Registered: ‎02-01-2013

The Xilinx documentation is not entirely clear regarding this pin. 

The TRM reports the pin simply as an "Output", without specifying whether it's an open-drain or totem-pole output.

2019-01-07_17-15-28.jpg

The Xilinx PCB checklist, however, recommends that a pull-up be attached to the pin.

2019-01-07_17-17-56.jpg

When in doubt, do what they do. Just copy a circuit from a reference board, like this ZCU102:

2019-01-07_17-16-29.jpg

-Joe G.

 

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Visitor
Visitor
878 Views
Registered: ‎06-05-2018

Hello Joe,

Thanks for your reply but I already made the same search as you.

Nevertheless, I don't want just copy and add a new reference on my board if I can make the same function with transistors for exemple.

Matthieu B

 

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Visitor
Visitor
855 Views
Registered: ‎06-05-2018

Hello,

So, nobody from Xilinx could answer or provide the output stage for this signal?

Regards

Matthieu B

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