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AR# 29910

XST - How do I use the Tristate Register in the IOB?

Description

How do I use the Tristate Register in the IOB?

Solution

Apply an IOB=TRUE constraint to the Tristate register for it to be pushed into an IOB. This will not be achieved with a global constraint from the XST options. You will have to apply the constraint specific to the register.

Please see the constraints guide for more information on applying the IOB constraint.

AR# 29910
Date Created 03/06/2008
Last Updated 12/15/2012
Status Active
Type General Article