38.3.1 Clock Configuration

The sample point of all nodes in a CAN FD network needs to be at the same position. Hence, it is recommended to use the same clock frequency and bit time settings for all nodes. Therefore, a CAN Clock of 40 MHz or 20 MHz is recommended.

The CLKSEL bit allows the selection of the clock source to the CAN FD module.

• If CLKSEL = 1, then the external clock (EXTCLK) will be selected.

• If CLKSEL = 0, then the system clock (F_OSC) will be selected.