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# 12419

Virtex-II - Why do the VRN, VRP, and Vref pins say input for direction when they can be used as dual function?


VRN, VRP, and Vref are listed as dual-function pins in the Virtex/-E/-II pinout tables, but their direction is listed as input only under their individual pin descriptions.


The Virtex/-E/II, the VRN, VRP, and Vref pins can be used as standard I/O if they are not needed for the output standard chosen. The reason the individual pin descriptions say input only is that when these pins are used as VRN, VRP, or Vref for a particular I/O standard, they are input only.

AR# 12419
日付 12/15/2012
ステータス アクティブ
種類 一般