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7,507 Views
Registered: ‎03-22-2013

Vivado unused IOs behavior

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Hello,

 

Is there a way to configure the behavios of unused IOs in Vivado like in ISE?

In ISE: generate programming file/configuration options

-g UnusedPin Unused IOB Pins (Pull Down, Pull Up, Float)

 

 

 

Best regards,

Christian

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1 Solution

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Xilinx Employee
Xilinx Employee
10,725 Views
Registered: ‎07-16-2008

Re: Vivado unused IOs behavior

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The equivalent Tcl command is:

set_property BITSTREAM.CONFIG.UNUSEDPIN Pullup [current design]

 

The possible values for the property is Pulldown (default), Pullup and Pullnone.

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7 Replies
Xilinx Employee
Xilinx Employee
10,726 Views
Registered: ‎07-16-2008

Re: Vivado unused IOs behavior

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The equivalent Tcl command is:

set_property BITSTREAM.CONFIG.UNUSEDPIN Pullup [current design]

 

The possible values for the property is Pulldown (default), Pullup and Pullnone.

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Explorer
Explorer
2,480 Views
Registered: ‎03-23-2015

Re: Vivado unused IOs behavior

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Hello @graces

 

I know this is an old thread but I just wanted a clarifications. Does the BITSTREAM.CONFIG.UNUSEDPIN affect the IOBs only during the device's configuration or does it also affect the unused IOBs after configuration and during normal operation?

 

I would like to know what is the impedance/level on all my unused IOBs but I suspect this parameter is only applicable to configuration time, am I right? If so, what is the actual impendance/level on my unused IOB during normal operation?

 

Thanks.

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Explorer
Explorer
2,454 Views
Registered: ‎03-23-2015

Re: Vivado unused IOs behavior

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Anyone?...

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Visitor egeek
Visitor
2,443 Views
Registered: ‎03-21-2016

Re: Vivado unused IOs behavior

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Hi from experience true for 'run time'..  I have ran performed some experiments and that verified this.

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Moderator
Moderator
2,437 Views
Registered: ‎01-16-2013

Re: Vivado unused IOs behavior

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@arquer,

 

Your query must be related or follow up to this old closed thread but I request you to create a new forum thread for better responses. 

 

--Syed

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Explorer
Explorer
2,422 Views
Registered: ‎03-23-2015

Re: Vivado unused IOs behavior

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Thanks @egeek .

 

@syedz, my question IS related to the original thread... so...?

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Moderator
Moderator
2,413 Views
Registered: ‎09-15-2016

Re: Vivado unused IOs behavior

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Hi @arquer,

 

The idea is to create a new thread for your new/follow-up query, as this thread has a solution for it's original post and is resolved - which is like a reference for users with similar issue.

 

Hence it is a best forum practice in such scenarios to create a new post for your query (link this thread for reference) and thus it might get more response towards a resolution.

 

Regards,
prathikm

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