SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
In this mode, the repeater module passes the initial trigger through to the output, and then blocks subsequent triggers until the configured number of trigger pulses (NSEL + 1) arrive. The result is that only 1 in every (NSEL + 1) pulses passes through to the output. Figure 18-5 shows an example of undersampled SOCs from multiple ePWM triggers.
This mode enables the application to scale down the trigger frequency for one or more SOCs. This is useful for charge-sharing input drivers which have increased error with higher sampling frequencies.
TRIGGER = ePWM SOCA, NSEL = 7, PHASE = 0, MODE = Undersampling, SPREAD = (don't care)