SPRUIW7A October 2020 – February 2022
The MAIN CAN3 port of J7200 SoC is connected to the CAN transceiver with Wake function supported device TCAN1043-Q1 using 1:3 mux on the J7200 SoM. The selection of Mux channel will be done using A 2-pin header J24 (68002-202HLF) is provided inline for user probe option.
The output of the CAN transceiver is terminated to a 4-pin header J27 (61300411121).
The CAN High/Low signals are routed as differential signals with 120E impedance with split termination. The STB signal is an active low signal held low with integrated pull down by default.
The VCC supply (5 V) to the transceiver is derived from a Step-Up converter.
Hardware WAKEn input for the CAN interface is provided using a push-button SW12.
The CAN Wake signals of both MCU CAN0 and MAIN CAN0 transceivers are tied together and limited the voltage level to 1.8 V using a Zener diode and terminated to SOM -CP B2B connector.