An external reset to the device can be triggered through the GPIO pin or through the register map. To initiate a device software reset event, write reserved code 1010 to the RESET field in the COMMON-TRIGGER register. A software reset initiates a POR event. Table 7-18 shows how the GPIO pin can be configured as a RESET pin. This configuration must be programmed into the NVM so that the setting is not cleared after the device reset. The RESET input must be a low pulse. The device starts the boot-up sequence after the falling edge of the RESET input. The rising edge of the RESET input does not have any effect.