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AR# 64069

MIG UltraScale - The Memory Byte/Bank Planner does not honor previously set PROHIBIT pins


Version Found: MIG UltraScale v7.0
Version Resolved: See (Xilinx Answer 58435)

After prohibits are set on I/O pins within I/O Pin Planner, if the Memory Byte/Bank Planner is opened, the prohibit pins are not honored.  

For example, if prohibits are set on I/Os within bank 46 byte 2, the Memory Byte/Bank Planner allows placement of a memory byte group to bank 46 byte 2. 

No errors are generated within the Memory Bank/Byte Planner.  

However, Tcl errors are generated.


Until this issue is resolved, you eill need to do one of the following to work around it:

Manually ensure that memory byte lanes are not assigned to byte lanes containing prohibits.


Move the memory pin(s) assigned to the prohibit location to a free I/O pin within the byte lane after closing the Memory Byte/Bank Planner.

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
58435 DDR4, DDR3, QDRIV, QDRII+, RLDRAM3, LPDDR3 UltraScale and UltraScale+ - IP Release Notes and Known Issues N/A N/A
AR# 64069
Date 04/30/2015
Status Active
Type Known Issues
  • Kintex UltraScale
  • Virtex UltraScale
  • MIG UltraScale
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