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On reset, all GPIO pins are configured as inputs

KV
Expert 1800 points

Other Parts Discussed in Thread: TMS320F2812

Hi,

The page 39 of the SPRS174O datasheet for TMS320F2812 mentions "On reset, all GPIO pins are configured as inputs".

Query

Would wish to know if the GPIO pin would be active High or active Low on reset / switch ON?

thx

  • 0
    TI__Guru* 93800 points

    The GPIOs are configured as inputs and not driven by the device after reset.  If they have an internal pull-up then they will go high, but this is not due to the pin being driven.   The signal description table in the data sheet shows which pins have internal pull-ups.

    -Lori

  • 0 in reply to Lori Heustess
    Expert 1800 points

    Thanks Lori.

    Based on your inputs I understand that "during reset or power On all GPIO's would be inputs and since these have internal pull-up's they would be high".  Further on thru program we need to configure the required pins as Input or output.

    Please confirm.

    thx

    [:)]

  • 0 in reply to KV
    Intellectual 295 points
    Not all of them will be high, since not all GPIO's have internall pull-up's turned on by default. Also You don't have to configure GPIO as input(since they are already configured as input). See data manual for further instructions.