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# 20737

Virtex-4 - What is the I/O Standard for VCC_CONFIG (VCCO of configuration bank, Bank0)?

Description

General Description:

Page 9 of the Virtex-4 Configuration Guide (UG 071, v1.1, September 10, 2004) states that all dedicated input pins operate at the VCC_CONFIG LVTTL level. Is this correct? Can LVCMOS be used?

The Virtex-4 Configuration Guide is available at:

http://www.xilinx.com/xlnx/xweb/xil_publications_display.jsp?sGlobalNavPick=&sSecondaryNavPick=&category=-1210767&iLanguageID=1

Solution

The I/O Standard for this is actually LVCMOS_12_F. The configuration guide should read as follows:

"All dedicated input pins operate at the VCC_CONFIG LVCMOS level. All active dedicated output pins operate at the VCC_CONFIG voltage level with the output standard set to LVCMOS_12F."

This will be updated in a future version of the Virtex-4 Configuration Guide.

AR# 20737
Date Created 09/04/2007
Last Updated 12/15/2012
Status Active
Type General Article