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# 22018

Embedded Tri-mode Ethernet MAC Wrapper v3.1 - IDELAYCTRL logic is incorrectly reset for RGMII interfaces


General Description:

When using the Embedded Tri-mode Ethernet MAC Wrapper v3.1 with the RGMII interfaces, the reset of the IDELAYCTRL module is incorrectly tied to ground. According to the Virtex-4 User Guide, the IDELAYCTRL must be reset after configuration.


A patch is available which correctly resets the IDELAYCTRL following configuration. To obtain this fix, install the patch that is available in the Embedded Tri-mode Ethernet MAC Wrapper v3.1 Core Release Notes and Known Issues Answer Record (Xilinx Answer 21903) and then regenerate the wrappers.

AR# 22018
Date Created 09/04/2007
Last Updated 12/15/2012
Status Active
Type General Article