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TMS320F28386D: How to take out two different EXTSYNCOUT from the ePWM module via GPIO

Daniel Perez
Prodigy 30 points
Part Number: TMS320F28386D


Hello,

I am currently designing a control system based on the TMS320F28386D microcontroller. It has to control two different inverters simultaneously.

In addition, each inverter has an interleaving configuration, so I need to sinchronize the operation. For that purpose, I have to take out two different EXTSYNCOUT signals. 

I want to know if taking out two EXTSYNCOUTSIGNAL via GPIO is possible, and if it is possible how it can be configured.

By the figure 17-6 of the TMS320F2838x manual, it appears that only one EXTSYNCOUT signal can be routed from the ePWM module to OUTPUT X-BAR GPIO.

Thanks in advance, 

Daniel Pérez

  • +1
    TI__Mastermind 27456 points

    Hi Daniel,

    There is only one EXTSYNCOUT signal that can be selected from the SYNCSEL register.

    However depending on what your trying to send out, the CLB does have access to certain PWM module's ZERO and PERIOD events. So if you're wanting to syncout those specific events you could use the CLB as your EXTSYNCOUT.

    Best,

    Ryan Ma