The MCAN can be clocked through the Power Management Controller (PMC), thus the programmer must first configure the PMC to enable the MCAN clock.
In order to achieve a stable function of the MCAN, the system bus clock must always be faster than or equal to the CAN clock.
It is recommended to use the CAN clock at frequencies of 20, 40 or 80 MHz. To achieve these frequencies, PMC PCK5 must select the UPLLCK (480 MHz) as source clock and divide by 24,12, or 6. PCK5 allows the system bus and processor clock to be modified without affecting the bit rate communication.