SPRUIN7C March 2020 – March 2024 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1
The CAN bit timing clock is normally derived from the system clock (SYSCLK). If desired, the bit clock can be derived directly from the external clock source (XTAL).
The System Control and Interrupts chapter and the device data sheet provide more information on how to configure the relevant clock source registers in the system module.