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Original question:

TCAN1145-Q1: how to config TCAN1145 to only wakeup TCAN1145 by WAKE pin

TCAN1145-Q1: SW mode and High-Low level wake up mode

Beida Song
Intellectual 800 points
Part Number: TCAN1145-Q1
Other Parts Discussed in Thread: TCAN1043,

Tool/software:

Hi Expert,

TCAN1145-Q1 support selective wake up, whether it also support High-Low level wake up in can bus( like TCAN1043)?

If so, can you give some guidance to configure high-low level wake up? Customer aims to make a design which is compatible for two wake up mode.

  • 0
    TI__Guru 74282 points

    Beida,

    Yes, the device also supports standard CAN bus wake-up. There is no configuration needed for this, the device automatically responds to CAN bus wake-up.

    Regards,

    Eric Hackett 

  • 0 in reply to Eric Hackett
    TI__Intellectual 800 points

    Thanks, Eric.

    For the switch between SW mode and standard CAN bus wake-up, can achieve it only by programming registers? Could you share a file guidance to help me understand and operate it?

  • 0 in reply to Beida Song
    TI__Guru 53575 points

    Hi Beida,

    By default the device is configured for standard CAN wake up pattern (WUP) detection so no further configuration is required to function in his mode. If selective wake is needed, the feature will first need to be set up by configuring the relevant registers. An outline of this process and list of related registers is available in the last paragraph of datasheet Section 10.4.5.2. Once this has been properly configured, the selective wake can be toggled on or off using the SW_EN bit in the mode control register. 

    For a more comprehensive look at partial networking and it's features, check out the App Note linked here:
    How Selective Wake Enables Partial Networking

    Regards, 
    Eric Schott