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SN65DSI86: Questions for the IRQ pin define

Mark Chen52
Expert 8045 points
Part Number: SN65DSI86

Hi Expert,

I have some questions about the IRQ pin of SN65DSI86 below. Please help to check it.

  1. What the purpose is for the IRQ, i just know that is interrupt signal, no more detail description for this pin function and purpose.
  2. If it is not used, how can it do?
  3. If it has to be used, what the default setting is? PU or PD?

thanks,

Mark

  • 0
    TI__Guru**** 177926 points

    Mark

    Please refer to register 0xE0h. 

    IRQ by default is disabled and in high-impedance state, so no external pull up or pull down is needed.

    When IRQ_EN is enabled, it will be driven high when a bit is set in register 0xF0-F5 what also has the corresponding IRQ_EN bit set.

    Thanks

    David