SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
As shown in Figure 9-2, DCC contains three counters – Counter0, Valid0 and Counter1. Initially, all counters are loaded with the user-defined, pre-load value. Counter0 and Counter1 start decrementing once the DCC is enabled at rates determined by the frequencies of Clock0 and Clock1, respectively. When Counter0 equals 0 (expires), the Valid0 counter decrements at a rate determined by Clock0. If Counter1 decrements to 0 in the valid window, then no error is generated and Clock1 is considered to be good within allowable tolerance as configured by the user.