Jared, I am not familiar with the VCU108, but we have interfaced the DAC EVM with several other Xilinx platforms. If this board can use FMC pins D4/D5 for the device clock, pins F10/F11 for SYNC, and pins G9/G10 for SYSREF, you should be able to get this to work. The DAC can also send a device clock on FMC pins G6/G7 if needed. What you would do is send an output clock from the LMX2595 to J1 of the DAC EVM. You will need a transformer board to convert this differential output to a single-ended signal for the DAC. This will be used as the device clock for the DAC. The DAC EVM then takes this input and divides it down to provide a reference clock to the LMK04828 . The LMK04828 will now be synchronized to the LMX clock source and be used to provide SYSREF to both the DAC and FPGA. Think of the LMX as a signal generator, then follow the instructions in the DAC38RF80EVM User's Guide for more help with this. Regards, Jim
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