The Xilinx Power Estimator (XPE) spreadsheet tool (download at www.xilinx.com/power) does not report separate power estimates for VCCAUX_HPIO and VCCAUX_HDIO. The power consumption for a device operating in LVAUX mode with VCCAUX_HPIO at 1.2V is the same as using the device in standard operating mode with VCCAUX_IO at 1.8V. However, the current drawn from the device in LVAUX mode is higher. This section describes how to estimate the power and current consumption when a device is configured using LVAUX mode. The methodology involves obtaining separate power estimates for HP I/O banks and HD I/O banks using XPE. From these estimates. you can calculate the current needed to operate the device and use this value to choose your VCCAUX_HPIO and VCCAUX_HDIO power supplies.