AR# 64299
2014.4.1 Vivado UltraScale Partial Reconfiguration - Reconfigurable Partition using GTs with CONFIG blocks in same clock Region causes DRC error "HDPR-55"
Description
When I use GTs with CONFIG blocks in the same clock Region for a Reconfigurable Partition (RP), I get the following DRC error:
ERROR: [DRC 23-20] Rule violation (HDPR-55) Reconfigurable Pblock using Global Clock resources must be clock region aligned - HD.RECONFIGURABLE Pblock '<pblock_name>' is not fully aligned on clock region '<clock region name>'.
A reconfigurable Pblock that ranges Global Clock sources must use either an entire clock region or none of it. Please re-floorplan to use complete clock regions.
Is this expected behavior?
Solution
The above DRC "HDPR-55" is expected in this situation.This Pblock can not be floorplaned to use an entire clock region because Vivado does not support CONFIG blocks inside a Reconfigurable Partition.
However, BUFG_GTs with GTs in RP are required to contain the whole clock region.
So it is a limitation that the user must use a clock region that contains a CONFIG site for an RP that contains GTs.
This limitation is described in (UG909) under the heading "Partial Reconfiguration Checklist for UltraScale Device Designs."
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| AR# 64299 | |
|---|---|
| Date | 05/15/2015 |
| Status | Active |
| Type | General Article |
| Tools |
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