6.1.7 MCU Error Signal Monitor (ESM)
The MCU error monitoring function is implemented in the GUI to check the functionality of MCU_ERR pin. Both PWM mode and TMS570 mode of error monitoring is implemented on the GUI. Each setting is described as follows:
TMS570 Mode button This option reads the register values and populates the corresponding text field with the corresponding low and high periods.
Write MCU Error Window Registers button When enabled, the timing thresholds set in the text field are written to the corresponding device timing registers (PWM_LMAX, PWM_LMIN, PWM_HMAX, PWM_HMIN).
Enable PWM Output button The Low Duration, High Duration, and the Enable PWM Output options turn on the clock with those periods on the MCU GPIO connected to the MCU_ERR pin. Jumper J11 must be set between pin 2 and pin 3 for this signal to be applied to the device pin.
MCU Error Window Register Values fields This option reads the timing register values and populates the corresponding text field with the corresponding low and high periods.
The ESM is disabled by default, and can be activated by setting the MCU_ESM_EN bit to 1b in the SAFETY_CHECK_CTRL SPI register.