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AM2634: Open Drain Outputs (GPIO)

TollMan
Intellectual 485 points

Part Number: AM2634

When I look at the AM263x documentation, it seems that it is not possible to configure outputs in an open-drain mode.

Is this true?

  • +1
    TI__Mastermind 33633 points

    Hello,

    There is not an official "Open-drain mode" for the general LVCMOS voltage buffers which are used for a majority of the pins on the device. However, if you select one of these pins for your GPIO, they can be configured to operate as open-drain outputs by configuring the GPIO module to source a constant low output and toggle the output enable. The output buffer will drive low when enabled and will be high impedance when disabled.

    Best Regards,

    Zackary Fleenor