I'm using the ADF4350 to generate the clock for the AD9914 and I would like the frequency to be either 2^31 Hz = 2147.483648 MHz or 3500 MHz which I generate from a 100 MHz reference. Using the evaluation software gives me the values I need to write to each register, shown below for the two frequencies. This works perfectly for 3500 MHz since MUXOUT - configured as digital lock detect - goes high and the beatnote with another frequency source locked to the same reference is zero. However, when I program the ADF4350 with the configuration for 2^31 Hz, the digital lock detect never goes high. Has anyone else run into this issue before?