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:
![J2](images/Si5351ABBJ25V.png)
![J3](images/Si5351ABBJ3VREG.png)
If you will be using the Si5351A Breakout Board with a 3.3V microcontroller and power supply, set jumpers J2 and J3 as follows:
![J2](images/Si5351ABBJ233V.png)
![J3](images/Si5351ABBJ3VEXT.png)