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CCS/TMS320F28069M: eCAN clock source

Part Number: TMS320F28069M

Tool/software: Code Composer Studio

We use the TMS320F28069M to control a sensorless 3 phase motor. External communication is done via CAN bus.
Issue is that, due to fixed internal oscillator to the eCAN, temperature performance is poor on CAN bus.
Suggested trimming at booting is no solution due to temperature change during operation.

Therefore is there a other processor that has CAN source clock routed from xtal oscillator and has minimal the TMSF28069M specifications?