We are trying to conduct a test where the reference design for the AD-FMCOMMS1-EBZ is changed. Right now, the reference design uses a LUT to output a sine wave. We have written a frequency generator program which we want to use as a square wave simulator. What we would like to accomplish is to disconnect the sine LUT and attach this frequency generator as to only output a square wave. However, we are not entirely sure on where to start with this. Any insight on how the sine LUT is attached to the hardware design, what pins it uses etc. would be greatly appreciated.