We are using the TI DSP TMS320F28335PGFA. This DSP was used to control a PWM inverter. Both EPWMA and EPWMB modules are used. Total 12 PWM channels.
In our latest design, we selected logic 1 as the off state for these PWM channels. Is this acceptable for F28335? Or is it required to set the off state of the PWM to logic 0 only? It seems that all TI reference design was using logic 0 as off state for the PWM.
Since the board is going to be used for inverter control, the PWM outputs need to be in either off state or high impedance state when we reprogram the DSP. We could either re-program thru JTAG or serial port.
During reprogramming, can the off state or high impedance state of the PWM outputs be guaranteed?
Thanks - Bruce