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TMS320F28388D: PWM sync for dual cpu

Strong ZHANG
Expert 3970 points
Part Number: TMS320F28388D

Hi Expert,

My customer are using F28388D, they assigned PWM1, PWM2,PWM3 for CPU1, PWM4, PWM5, PWM6 for CPU2.

they want these PWM module are all sync up,

just take a check, if there any difference of the sync up configuration for two CPU? just need to configure PWM4 is sync up with PWM1 by EPWMSYNCINSEL in CPU2 is ok?

  • 0
    TI__Mastermind 22810 points

    Hi Strong,

    Strong ZHANG said:
    just take a check, if there any difference of the sync up configuration for two CPU? just need to configure PWM4 is sync up with PWM1 by EPWMSYNCINSEL in CPU2 is ok?

    The sync chain should still work as it does with only one CPU. 

    The only thing to make sure you do is use 'GBCLKSYNC' instead of 'TBCLKSYNC'. This will make sure that all EPWMs (across the two CPUs) start at the same time. 

    Best Regards,

    Marlyn