Hi all, I have a camera and a Virtex-5 FPGA, and i would like to store frames in FPGA Block Ram. In my design (that worked with Spartan-3E) i need to double camera clock frequency, in order to get all data, because camera send data on both clock edges. The problem is the following: I can't use DCM, because camera clock frequency is about 163 ns (~6 Mhz), and when I'm trying to generate DCM (selecting Maximum Range Mode) , Xilinx Clock Wizard says that "DLL Low Frequency Mode Range is: 19-32 Mhz, and DFS Low Frequency Mode Range is 1-40 Mhz". How can I avoid this problem? Do you think that I could use component DCM of Unisim Library? Moreover, isn't there a VHDL 2X Clock Multiplier that works fine?
Giulio