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TMS320F280049: EPWM XBAR trip function check

Brian Wang0
Expert 5390 points
Part Number: TMS320F280049


Hi team,

Here I would like to check a detail about EPWM trip source.

1. I noticed Input Xbar 1/2/3/6 are directly connected to Trip1//2/3/6 with ePWM x-bar bypassed, is that correct?

2. Are trip 1-6 the source for CBC and OST 1-6? Does this mean only trip 1-6 can be directly configured as OST nand CBC source, while other tripx need to go through digital comparator?

3. What is the total number of tripx in ePWM? The figure showed 12 but the ePWM  X-BAR showed 32. Which is correct?

Thanks,

Brian

  • 0
    TI__Guru 52040 points

    1. Yes, those inputs skip EPWM xbar and connect directly to the TZx inputs.

    2. The TZ1-6 can be used as the source for CBC and OST. Other inputs from the EPWM XBAR (TRIPIN) need to go through the digital compare events.

    3. the total number of TRIPIN signals available from EPWM XBAR is 8. There are 8 instances of the EPWM XBAR. Each instance can choose between the 32 rows and 4 columns of signals shown in the TRM section.

    Nima