I do have EVAL-CN0335-PMDZ evaluation kit and it is connected to Nexys 3 board. I have used example program from analog devices web-page. This module is connected to JA connector on nexys board
Demo code is in AD7091R Pmod Xilinx FPGA Reference Design [Analog Devices Wiki]
The example program shows always 0.0 Volts. I'm assyming that it is communication problem with spi interface.
Is there any solutions for this problem?