2. Support
  3. AR# 3245: M1.4 Map - Mapper unable to merge a RAM and Flop with opposite clock polarities
  4. AR# 32455: 11.1 Constraints Editor Known Issue - When I attempt to select my input clock in Constraints Editor, all I see is the clock that comes out of my ISERDES

AR# 32455

11.1 Constraints Editor Known Issue - When I attempt to select my input clock in Constraints Editor, all I see is the clock that comes out of my ISERDES

Description

When I attempt to select my input clock in Constraints Editor, all I see is the clock that comes out of my ISERDES.  

 

Why am I unable to see my input clock in the clock list?

Solution

The Constraints Editor is not tracing back to the input clock and is only referencing the clock that comes out of the ISERDES component.  

 

This issue should be fixed in the next major release. 

 

To work around this issue, manually add the constraints to the UCF.

AR# 32455
Date 05/23/2014
Status Archive
Type Known Issues