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TCAN4550-Q1: How many messages that TCAN4550-Q1 CAN controller is able to handle?

Oliver Kim7
Expert 3875 points
Part Number: TCAN4550-Q1

Hello team,

How many messages that TCAN4550-Q1 CAN controller is able to handle?

Below is one example in other IC vendor: CAN controller in MCU(TC1767)

One MultiCAN Module with 2 CAN nodes and 64 free assignable message objects for high efficiency data handling via FIFO buffering and gateway data transfer

Thanks.

Regards,

Oliver Kim

  • +1
    TI__Mastermind 33030 points

    Hi Oliver,

    The TCAN4550-Q1 has to RX FIFOs that can each support up to 64 messages.  It also has 64 RX Buffers that can be used as well.  Both RX FIFOs and the RX Buffers can be used at the same time for a maximum storage of 192 messages before the memory is full. 

    In order to use all three, you will have to implement filter elements to direct the device where to store the received messages based on their ID.  You can have up to 128 Standard ID (11-bit identifier) elements, and 64 Extended ID (29-bit identifier) filter elements that can be used to direct the messages to the different storage locations.

    The device can be setup to send messages through a FIFO or Buffers depending on your preference.  The FIFO will send the messages in the order they are placed in the FIFO, and the Buffers will send the messages in the order of the most significant identifier as consistent with the CAN Arbitration protocol.

    There can be a total of 32 messages stored in memory waiting to be transmitted for either the FIFO or Buffer approach.

    Regards,

    Jonathan