TIDUF71 March 2024
The “proper way” for using the internal PLL/VCO is to bypass the LMX2694 completely and drive the reference directly from the LMK04832. This approach requires solder modifications on the board (hence, this is not the “easy way”).
The following hardware changes are needed to implement this configuration:
The bring-up sequence modifies programming files per below.
The LMK file outputs a 491.52MHz reference that feeds directly to the AFE7950-SP clock input. No programming is done on the LMX part.