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AR# 66310

Burst-Mode Clock Data Recovery XAPP1252 v1.0: Requirement for BUFG location


XAPP1252 v1.0 requires the BUFG to be located in the same clock region as the transceiver.

This is not possible on all devices as there can be no BUFGs available in the same clock region, only BUFG_GTs and they will not implement correctly.


The usage of BUFG of the adjacent clock region is also possible and it is used this way in this Application Note too.

The XAPP documentation will be updated accordingly.

AR# 66310
Date Created 12/22/2015
Last Updated 01/06/2016
Status Active
Type General Article
  • Kintex UltraScale
  • Virtex UltraScale