AR# 11945


Virtex-II/-II Pro - What is the value of ICCAUX? What is the power consumption of VCCAUX?


What is the power consumption of VCCAUX? What is ICCAUX?


For the quiescent ICCAUX, please refer to the Virtex-II/Virtex-II Pro Data Sheet at:

Also refer(Xilinx Answer 11182)to know where VCCAUX power can be used inVirtex-II/Virtex-IIdevice families.

Additionally, each DCM at maximum frequency consumes ~30 mA max (this is the worst case, since not all DCMs are running at 420 MHz). Values of up to 300 mA have been measured in large parts. For Virtex-II and Virtex-II Pro devices, budget your designs with a 600 mA capacity in mind.


  1. Since VCCAUX is also used in the differential I/Os, the dynamic current is more than the quiescent current when I/Os are switching. The budget noted above includes differential I/O usage.
  2. Quiescent current is characterized for the entire chip. VCCAUX is not divided into banks.
  3. Differential inputs listed above include any input with a differential op-amp. This includes any inputs with a VREF requirement (GTL, HSTL, SSTL, AGP) and the differential I/O (LVDS, LVPECL, LDT).
  4. Refer to (Xilinx Answer 18493) for more information on VCCAUX support in XPower.



Answer Number 问答标题 问题版本 已解决问题的版本
11182 Virtex-II/-II Pro - What is the purpose of the VCCAUX power supply pins? N/A N/A
AR# 11945
日期 12/15/2012
状态 Active
Type 综合文章
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