JTAG

There are two JTAG interfaces on the phyCORE-AM65x development kit (JTAG0 at X21 and JTAG1 at X2). A Spectrum Digital XDS200 USB JTAG Emulator and Code Composer Studio by TI will be needed in order to follow this guide. This guide which will show you how to connect and use these interfaces.

phyCORE-AM65x Development Kit JTAG header locations

Requirements

Connecting the JTAG Device to the Kit

The phyCORE-AM65x kit has two JTAG connector styles.

  • X2 is the smaller notched 20 pin header, X21 is the larger 20 pin connector.

    ../_images/pcm-067-jtag-Pin1.png

  • Connect your JTAG Probe to the connector such that the red line on the ribbon cable aligns with pin 1 on the header.

    ../_images/pcm-067-jtag-cable.png

Connecting the JTAG Device to the Host Machine

  • You may need to connect the JTAG device to your machine if it is not automatically detected.

    ../_images/pcm-067-jtag-vm-removable-device-settings.png

Creating a New phyCORE-AM65x project in Code Composer Studio

  • In order to test the JTAG connection, a new project needs to be created in CCS for the phyCORE-AM65x.

  • Click on File → New → CCS Project

    ../_images/pcm-067-jtag-ccs-project.png

  • The “New CCS Project” window will appear and you can change the following settings to match what is below.

    1. Target: AM65x - Cortex A53 → AM6548

    2. Connection: Texas Instruments XDS2xx USB Debug Probe

    3. Project name: hello_world

    4. Compiler version: GNU v7.2.1 (Linaro)

    5. Tool-chain → Linker command file: AM65x.lds

  • Click Finish when everything is configured properly

    ../_images/pcm-067-jtag-css-project-settings.png

Creating a New Target Configuration

  • Now that the project is created, edit the target configuration which will allow you to test the JTAG connection.

  • View → Target Configurations

    ../_images/pcm-067-jtag-css-target-config.png

  • In the Target Configurations windows, you will be able to open up the project configuration file:

    ../_images/pcm-067-jtag-css-project-setup.png

  • In the target configuration file, select the following options:

    1. Connection → Texas Instruments XDS2xx USB Debug Probe

    2. Board or Device → AM6548

    3. Click the “Save” button when you have the correct configuration options selected

    ../_images/pcm-067-jtag-css-target-setup.png

  • In the same window you will now be able to click on Test Connection

    ../_images/pcm-067-jtag-css-project-test-conn.png

  • When the device is properly connected, you will see output similar to the example below:

    Successful Connection Expected Output