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A pin setup for the 3-state

KAZUHITO KONDO
Intellectual 285 points

Other Parts Discussed in Thread: OMAP-L138

I have a question about pin setting for OMAP-L138. Does the 3-state output signal propagate inside pin? For example, PINMUX3_19_16 has 3-state and UART0_RXD. I want to set 3-state, but UART0_RXD which is not used is input pin. I also want to set PUPDENA[8] to zero, and CP[8]'s IPU/IPD is disabled. If 3-state out propagates inside pin, UART0_RXD is not good state, I think.

Please give me some advice.
Regards

  • 0
    TI__Expert 4760 points

    Hi Kondo,

    If the I/O pin is set to tri-stated there should be no signal propagated inside the device through that I/O pin.

    Regards

    Antony

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