SPRUJ53B April 2024 – September 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
The external reset (XRS) is the main chip-level reset for the device and resets the CPU, all peripherals and I/O pin configurations, and most of the system control registers. There is a dedicated open-drain pin for XRS. This pin can be used to drive reset pins for other ICs in the application, and can be driven by an external source. The XRS is driven internally during watchdog, NMI, and power-on resets.
The XRSn bit in the RESC register is set whenever XRS is driven low for any reason. This bit is then cleared by the boot ROM.