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TMS320F280049: LIN controller IP general questions

Sheldon He
Expert 8585 points
Part Number: TMS320F280049

Hi expert,

I'd like to have answer of below two questions:

1. Does the LIN controller have message based or byte level Tx Rx behavior?

2. Please provide a diagram showing how the LIN controller samples the data (i.e., 3 samples at tq 7, 8 and 9, 1 sample at tq 8, etc.)

Thanks

Sheldon

  • 0
    TI__Genius 15385 points

    Hi Sheldon,

    I am not sure what you mean by message based, LIN transmits/receives data in bytes.

    I am not sure what you mean by 3 samples at tq 7, 8 and 9? Also, not sure what diagram you are looking for in terms of data sampling?

    LIN message frame has a protocol, with a start and stop bit, along with data and PID. All of it is explained in the TRM, do you want to know how to calculate baud rate?

    Regards,

    Nirav

  • 0 in reply to Nirav Ginwala
    TI__Expert 8585 points

    Hi Nirav,

    Thanks for your reply! 

    As for the second question, we need design level information on how voltage level is qualified/sampled internally in the LIN module. It could be some digram like "Figure 27-4. Asynchronous Communication Bit Timing" in device datasheet.

    Thanks

    Sheldon