DE mode can be exited in two ways,
based on the DECTL[MODE] setting:
Software clear of DEACTIVE
flag, DECLR[CLR]
Cycle-by-cycle clear mode, in
which TRIPH_OR_TRIPL is evaluated on every EPWMxSYNCPER and if the trip
condition is not present, then DEACTIVE flag is cleared. Figure 22-56 illustrates the clearing of the DEACTIVE flag based on
EPWMxSYNCPER.