UPGRADE YOUR BROWSER

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# 21113

ML300 - Start/Reset mode for the PHY defaults to 100 MBit, Full Duplex, and no Auto-negotiation

Description

General Description:  

Because of CFG/LED1 being pulled to 2.5V when 3.3V is needed, the startup mode for the PHY defaults to 100 Mbit, full duplex, and no auto-negotiation. In order for auto-negotiation to be enabled without the use of software, it is necessary to pull the CFG/LED1 signal to 3.3V.

Solution

The following document explains the hardware changes required: 

 

http://www.xilinx.com/txpatches/pub/documentation/misc/ml300_ethernet_patch.pdf

AR# 21113
Date Created 09/04/2007
Last Updated 05/19/2014
Status Archive
Type General Article