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AR# 50384

2013.2 Vivado Timing - ERROR: [Constraints-443] set_max_delay -datapath_only: 't1_reg/Q' is not a valid start point


We are applying a set_max_delay constraint and are getting an error as mentioned below.
ERROR: [Constraints-443] set_max_delay -datapath_only: 't1_reg/Q' is not a valid start
Why do we see this issue?


The issue is that "Q" is not a valid start point.  Please change the start point to the clock (CLK) pin of that cell or use the cell as the start point.


Associated Attachments

Name File Size File Type
test2.txt 4 Bytes TXT
AR# 50384
Date Created 11/12/2012
Last Updated 08/07/2013
Status Active
Type General Article
  • Vivado Design Suite - 2012.1
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