This is the normal operating mode of the device. The CAN driver and receiver are fully operational and CAN communication is bi-directional. The driver is translating a digital input on the TXD signal from the CAN FD controller to a differential output on CANH and CANL. The receiver is translating the differential signal from CANH and CANL to a digital output on the RXD signal to the CAN FD controller. Normal mode is enabled or disabled via SPI.

When fail-safe mode and the SWE timer are enabled, a SPI command to enter normal mode turns off the SWE timer. Clearing interrupts is recommended while in standby mode. There are two cases that cause the SWE timer, when enabled, to start while in normal mode.

• CANSLNT_SWE_DIS = 0b which starts the SWE timer after CANSLNT interrupt is set. CANSLNT interrupt needs to be cleared to stop the timer.
• CANSLNT_SWE_DIS = 1b (default) which starts the SWE timer when no bus activity is present for longer than t_SILENCE. Bus activity clears t_SILENCE timer reset the SWE timer.

When the SWE timer times out the device enters sleep mode.