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DK-TM4C129X: USB-OTG port

Adhitya G N
Intellectual 360 points

Part Number: DK-TM4C129X

Hello,

The J4 on the DK-TM4C129X is the connection for the ICDI that is used to program/debug the device.

1. Can I use J24 ( USB OTG port )  instead of J4 ? If so, what changes should I make ?

2. TM4C datasheet says there is ICD inside.How can we use that with an USB connection ? Any ciecuit diagram ?

3. We are not able to understand why TM4C123 is used in TM4C129X board and how the program download happens through USB ?

Thanks,

Adhitya

  • 0
    TI__Guru 72500 points

    The schematics for the DK-TM4C129X are in appendix D of the User's Guide. The primary purpose of the TM4C123 on this board is as a JTAG scan controller for the TM4C129. The in-circuit debug and programming on the TM4C129 is done through the JTAG pins.

    Adhitya G N said:
    1. Can I use J24 ( USB OTG port )  instead of J4 ? If so, what changes should I make ?

    No, J24 connects to the USB pins of the TM4C129. You need code inside of the TM4C129 to use that USB interface

    Adhitya G N said:
    2. TM4C datasheet says there is ICD inside.How can we use that with an USB connection ? Any ciecuit diagram ?

    See page 7 of the schematic. The TM4C123 creates the scan controller. The USB port of the TMS4C123 is connected to J4.