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AR# 67155

How to handle TXPIPPMEN in GTY and GTH UltraScale HSSIO

Description

In both (UG576) and (UG578), the port TXPIPPMEN is declared to be Asynchronous.

How should I handle this signal?

Solution

This signal is re-synchronized internally, however it is still recommended that TXPIPPMEN be treated as a synchronous signal on the TXUSRCLK domain.

TXPIPPMEN should be pulsed for two TXUSRCLK cycles in order to move TXPIPPMSTEPSIZE[3:0] of the PI controller in the direction of TXPIPPMSTEPSIZE[4].

AR# 67155
Date Created 05/04/2016
Last Updated 05/12/2016
Status Active
Type General Article
Devices
  • Kintex UltraScale
  • Kintex UltraScale+
  • Virtex UltraScale
  • Virtex UltraScale+