How to use the Si5351A Breakout Board
Jumper Settings
If you will be using the Si5351A Breakout Board with a 5V microcontroller and power supply, set jumpers J2 and J3 as follows:
If you will be using the Si5351A Breakout Board with a 3.3V microcontroller and power supply, set jumpers J2 and J3 as follows: