Hi,
I wrote a package to drive Si5351 with PC (Windows / Linux), Raspberry Pi, or ESP32.
Si5351 is a clock generator with 3 ~ 8 clock outputs and arbitrary frequency ranging from 2.5KHz to 225MHz. Spread-spectrum mode is also supported.
Phase offset between clock outputs can be set. It functions as a quadrature clock source if the phase offset is 90 degree.
FYI
Wei Lin