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TLV320AIC3106: what's the default level of GPIO2/1 during the period from POR to complete register configuration.

Harry Ma
Intellectual 2690 points
Part Number: TLV320AIC3106


Hi Team

for these two Pin. What is the default state during the period from power-on to the completion of functional configuration? and what is the level on default state?

  • +1
    TI__Mastermind 30615 points

    Hello Harry,

    Thank you for reaching out. After power on and before device configuration (on reset) the default for GPIO1 and GPIO2 is disabled (see Table 10-107. Page 0 / Register 98: GPIO1 Control Register and Table 10-108. Page 0 / Register 99: GPIO2 Control Register).

    When plugging in the EVM to test, I observed the voltage on GPIO1 and 2 to be IOVDD. The EVM has options to install pull-up or pull-down resistors. Thus, I suspect this means that the pin is either High-Z or weakly pulled high in the disabled state.   

    Let me know if this answered your question.

    Best,
    Andrew