I designed a CIC filter about 7 or 8 years ago with Xilinx FPGA. It converted 48K audio signal up to 40M. At that time, 40M was almost the fastest Xilinx FPGA could go.
There was an application note on Xilinx website talking about how to implement it on their 6000 family devices. I am not sure if you can still find it any more. Those devices were discontinued long time ago. Good luck! |
