12-04-2009 07:30 AM
We received the following update from Xilinx on the soft calibration module:
The soft calibration module is not optional in terms of being included in the design. It will always be in there starting with 11.4. The only optional aspect is whether you have it do “calibrated input termination” or not based on the GUI setting. But it will still physically be there assisting in doing the DQS centering and real time VT adjustments that we recommend as the default setting.