How to configurate the SOC interrupt event time based on TMS570ls1114PGE module?

In the TMS570LS1114PGE module debugging, ETPWM module how to ensure that the ETPWM module frequency and SOC trigger interrupt time, we use the HALCoGen configuration, found to ensure that the SOC trigger interrupt time can not ensure the PWM frequency output, to ensure that the PWM Frequency output, and can not ensure that the SOC accurately interrupt the time.