We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 36251

PlanAhead - Why am I allowed to change Slew and Drive attributes on input ports?


Slew and drive attributes are not supported for input ports.

Why does the PlanAhead tool allow me to modify these attributes for inputs?

Should I be able to change these attributes?


The PlanAhead tool incorrectly allows users to change the slew and drive attributes on inputs and export them to the ".ucf" file; this should not be allowed.

Users should not change these attributes.

AR# 36251
Date Created 07/07/2010
Last Updated 11/04/2013
Status Active
Type Known Issues
  • PlanAhead - 12.1
  • PlanAhead - 13.1
  • PlanAhead - 14.1