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AR# 64291

High Speed SelectIO Wizard - Inability to select the Delay Format in the GUI


In the High Speed SelectIO Wizard there is currently no way to change the Delay format. 

If the Delay type FIXED is selected then the format is always TIME.

If the Delay type Variable or Var_Load is selected, the format is always COUNT.


If you require a different Delay type / format combination, you can do the following:

Use the High Speed SelectIO to set up everything else that is required for your interface, and generate the output products. 

Then replace the .XCI file with the <<component name>>.v and other required files. 

The constraints will also need to be added.

They can be found in the <<component name>>.xdc file.

Note: the port names might need to be changed.

Within the <<component name>>_ifo_bitslice_array.v  file you will find the  RX_BITSLICE instantiation and you can change the DELAY_FORMAT and DELAY_VALUE. 

Please refer to (Xilinx Answer 64216) High Speed SelectIO - Known Issue List for the software version that the issue is resolved in.

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
64216 High Speed SelectIO Wizard - Known Issue list N/A N/A
AR# 64291
Date 05/14/2015
Status Active
Type General Article
  • Kintex UltraScale
  • Virtex UltraScale