SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
EPWMSYNCPER comes from the Time-Base submodule of the EPWM. For a detailed description of how this signal is generated, refer to the Time-Base Submodule section of the Enhanced Pulse Width Modulator (ePWM) chapter.
The EPWMSYNCPER signal that loads DACVALA when DACCTL [LOADMODE] = 1 is a level trigger load. If TBCTR and TBPRD of the EPWM are both 0, EPWMSYNCPER is held at a high level and DACVALA is immediately loaded from DACVALS irrespective of the value of DACCTL [LOADMODE]. Due to this, configure the EPWM first before setting DACCTL [LOADMODE] to 1.