SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
Figure 12-218 shows the operation of the event-trigger's start-of-conversion-A (SOCA) pulse generator. The EPWM_ETPS[11-10] SOCACNT counter and EPWM_ETPS[9-8] SOCAPRD period values behave similarly to the interrupt generator except that the pulses are continuously generated. That is, the pulse flag EPWM_ETFLG[2] SOCA is latched when a pulse is generated, but it does not stop further pulse generation. The enable/disable EPWM_ETSEL[11] SOCAEN bit stops pulse generation, but input events can still be counted until the period value is reached as with the interrupt generation logic. The event that will trigger an SOCA and SOCB pulse can be configured separately in the EPWM_ETSEL[10-8] SOCASEL and EPWM_ETSEL[14-12] SOCBSEL bit field. The possible events are the same events that can be specified for the interrupt generation logic.
Figure 12-219 shows the operation of the event-trigger's start-of-conversion-B (SOCB) pulse generator. The event-trigger's SOCB pulse generator operates the same way as the SOCA.