SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
The counter-compare module can generate compare events in all three count modes:
To best illustrate the operation of the first three modes, the timing diagrams in Figure 22-17 through Figure 22-20 show when events are generated and how the EPWMxSYNCI signal interacts.

Figure 22-18 Counter-Compare Events in Down-Count Mode
Figure 22-19 Counter-Compare Events In Up-Down-Count Mode, TBCTL[PHSDIR = 0] Count Down On Synchronization Event
Figure 22-20 Counter-Compare Events In Up-Down-Count Mode, TBCTL[PHSDIR = 1] Count Up On Synchronization Event