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TCAN1043A-Q1: External wake-up device for AM62A7

Rakesh Thapliyal
Prodigy 190 points

Part Number: TCAN1043A-Q1
Other Parts Discussed in Thread: AM62A7,

Tool/software:

We have selected the TCAN1043A-Q1, which does not support SPI communication for CAN wake-up. Will this part number allow for communication with CAN FD? Furthermore, given that certain components do offer SPI communication, what is its role in this scenario? Can you recommend an external wake-up device that can operate with the AM62A7 SoC while the processor is in deep sleep mode?. 

  • 0
    TI__Mastermind 31280 points

    Hi Rakesh,

    TCAN1043A-Q1 does support CAN FD communication, it's simply a CAN transceiver without registers integrated. The transceivers with SPI support (like TCAN1145) have more advanced functions like partial networking and watchdog, but if those features are not needed than TCAN1043A-Q1 is a more cost-friendly option. It can also support the external (or remote) wake-up by recognizing specific signal patterns on the CAN bus. You can find a detailed description in "Remote Wake Request via Wake-Up Pattern" section in datasheet.

    Let me know if you have more questions.

    Regards,

    Sean

  • 0 in reply to Sean Guo
    Prodigy 190 points

    Hi Sean,

    We are planning to connect with AM62A7 MCU having CANFD then does it require separate SPI communication on CAN transceiver or without SPI features can be enough to communication with vehicle CAN. Please specify additional features which cant be achieve without SPI in our configuration.

  • +1 in reply to Rakesh Thapliyal
    TI__Mastermind 31280 points

    Hi Rakesh,

    From the block diagram above I don't see any need for SPI interface. TCAN1043A-Q1 would be enough here. The EN signal to control the buck can be supplied by INH pin, 5V for VCC, 3.3V for VIO, and CAN FD also supported.

    Regards,

    Sean

  • 0 in reply to Sean Guo
    Prodigy 190 points

    Thank You Sean for valuable insights details