We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 61723

UltraScale GTH and GTY transceivers reference clock AC coupling capacitor value


The Kintex UltraScale GTH User Guide (UG576 v1.0) shows the AC coupling capacitor value for the reference clock as 0.1uF and the Virtex UltraScale GTY User Guide (UG578) shows the value as 0.01uF.

Which value should be used?


Though both will work for most applications, the recommendation is to use 0.01 uF.

The Kintex UltraScale GTH user guide will be updated to reflect this. 
AR# 61723
Date Created 08/07/2014
Last Updated 08/28/2014
Status Active
Type General Article
  • Kintex UltraScale
  • Virtex UltraScale