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danewhome
Observer
Observer
467 Views
Registered: ‎01-18-2018

How to maintain IP/BD OOB xdc and USER xdc

How do user know IP or BD build-in constraints and prevent double constrain action in user's USER.xdc file?

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3 Replies
rshekhaw
Xilinx Employee
Xilinx Employee
461 Views
Registered: ‎05-22-2018

Hi @danewhome ,

You can find the xdc of BD in source tab itself:

ooc_per_bd.PNG

Thanks,

Raj

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viviany
Xilinx Employee
Xilinx Employee
447 Views
Registered: ‎05-14-2008

IP/BD constraints take care of any prioprity or conflicting issues that might happen with the user constraints.

Ideally user does not need to care about the constraints for IP/BD, just needs to add constraints for user logics in user.xdc.

-vivian

 

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syedz
Moderator
Moderator
445 Views
Registered: ‎01-16-2013

@danewhome 

 

Check constraint file processing order:

https://china.xilinx.com/support/documentation/sw_manuals/xilinx2018_3/ug896-vivado-ip.pdf#page=38

 

Also check Constraint Files Order with IP cores. 

https://www.xilinx.com/support/documentation/sw_manuals/xilinx2018_3/ug903-vivado-using-constraints.pdf#page=14

 

--Syed

 

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