TMS320F280049: 8, 10 or 20 MHz Quartz for CAN? precision vs frequency

Part Number: TMS320F280049

Hello all,

Wer are in the process to choose our quartz oscillator for our CAN communication board with TMS320F280049.

We d like to know if there is somewhere a possibility to produce a computation or read a documentation of the dispersion of the bit timing vs the minimum precision of the quartz (10 to XX ppm) vs the frequency (better 20MHz with 50ppm or 8MHz with 10ppm?)

We are short of 20Mhz quartz at 10 ppm and 10ppm with automotive temperature.

Any idea how to confirm which direction we should take with regard that we use a TMS320F280049 ?

Thank you!

PA.