How to configure/program Atlys Spartan-6 AC-97 audio in HDL?

Hello,

I am working on a project with the Digilent Atlys Spartan-6 XC6SLX45 FPGA board. http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,400,836&Prod=ATLYS

There is an National Semiconductor LM4550 AC-97 codec on board of the Spartan-6 board. The goal is to put audio in the AC-97, put it through a simple low-pass filter in the FPGA and then put the audio out again in the AC-97. So it shouldn't very difficult, but configurating the device to program it seems to be a problem.

The HDL Workflow Advisor can be used and has a link with Xilinx ISE 13.2. hdlsetuptoolpath('ToolName','Xilinx ISE','ToolPath','C:\Xilinx\13.2\ISE_DS\ISE\bin\nt64\ise.exe');

When configuring the HDL Workflow Advisor I don't know what the FPGA pins should be. Please look on the desktop screenshots in the link below. http://img543.imageshack.us/img543/3841/matlab1.jpg http://img546.imageshack.us/img546/6639/matlab2.jpg

Could anyone help me and tell me what Matlab is expecting? So I can completely configure the HDL Workflow Advisor and generate it.

Thanks in advance.