SPRUJ53C April 2024 – February 2025 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SG-Q1 , TMS320F28P559SJ-Q1
The NMI watchdog timer has a clock domain (PLLSYSCLK). Despite the name, PLLSYSCLK can be connected to the system PLL (PLLRAWCLK) or to OSCCLK. The chosen clock source is run through a frequency divider, which is configured using the SYSCLKDIVSEL register. PLLSYSCLK is gated in HALT mode.