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TMS320C28346/ Question, input of Syncout select MUX and priority between CMPA and CMPB

user4886088
Prodigy 10 points

Hi I am Seon geun

i want to ask some questions of you

first, i really don't know why did you select input signal (CTR=CMPB) and (CTR=zero) in Time Base submodule of ePWMx module

i think if we want to  CTR=PRD or CTR=CMPA then we can't select

second, The event priority levels, CMPB is always higher than CMPA in Action Qualifier. Did you have a reason?

It is possible for the ePWM action qualifier to receive more than one event at the same time by ther hardware.

Why CMPB is higher priority..

thank you. ( i cant eanglish well sorry)   

  • 0
    TI__Genius 15260 points
    Hi Seon guen,

    You have the option to use all of the compare events CTR=ZERO, CTR=CMPA, CTR=CMPB, and CTR=PRD in your application if you need them. The action qualifier priority only makes a difference if they are the same, for example if CMPA=PRD or CMPA=CMPB. In those scenarios, the action of the higher priority will take effect and the other will be ignored.

    Please let me know if this answered your question.

    Regards,
    Kris