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TM4C129 GPIO AFTER RESET

AVI BEN-MAOR
Intellectual 410 points

Hi all

I'm using TM4C129 and I started using it one year ago.The early DS define that all

GPIO pins wake up as input TRI state except of: I2C,JTAG,SSI0 and  I2C0.

The late DS define that all GPIO pins wake up as input TRI state except of JTAG.

Is it what really happens?

Best Regards,

Avi Ben-Maor.

  • 0
    TI__Guru**** 244400 points
    Hello Avi,

    The I2C and SSI will be GPIO after reset release. Only JTAG is default function after reset release. Why you may see I2C and SSI is due to the fact the boot loader configures these set of GPIOs for boot loader interface

    Regards
    Amit