AD7091R-4 SPI Sample Code for Altera's FPGA

Hi,

Now I'm designing my product by using AD7091R-4 and Altera FPGA.

I find the Altera FPGA's sample code for AD7091R on ADI wilki but it's only single channel and without controlling SDI pin.

So I would like to ask whether do you have AD7091R-4's Sample Code for Altera's FPGA?

Thanks very much!