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TMDSIDK437X: TMDSIDK437X

Part Number: TMDSIDK437X
Other Parts Discussed in Thread: TMDXSK437X, AM4376, , TPS5402

There is TMDSIDK437X and TMDXSK437X as EVMs for AM4376, and I’ll be calling those as IDK and starter kit, respectively.

 

  • Powering
    • IDK: It seems to be impossible to shut down IDK by either HW switch nor the SW. Is it correct?
      • If the above is correct, is there anyway to implement powering up/ shutting down functions by SW?
      • If motor driver would not be used/connected, can the customer only use 5VDC?
    • Starter kit: There is a HW powering switch, but is there SW functions for powering up/ shutting down?
      • If there is no such SW functions as default, is it possible to implement?
    • When using with Linux SDK (for starter kit) or RT Linux SDK (for IDK), is the default setting would be writing from SD card?
    • For both IDK and starter kit, can external SRAM be connected?

There are some functions related to power saving that AM574x does not support, such as core domain suspend/resume, idle mode and single core operation.

Is there any idea that would enable power saving using AM4376, especially that was not supported by AM574x?

  • Hi Kevin,

    IDK: It seems to be impossible to shut down IDK by either HW switch nor the SW. Is it correct?
    • If the above is correct, is there anyway to implement powering up/ shutting down functions by SW?

    Correct that there is no HW power switch. The power cable recommendations are found in the Quick Start Guide:

    https://www.ti.com/lit/ml/sprw259a/sprw259a.pdf?ts=1640189220665&ref_url=https%253A%252F%252Fwww.ti.com%252Ftool%252FTMDSIDK437X

    Likewise powering down is achievable in SW if running the SDK. This is done by issuing the command "shutdown -h now".

    If the customer is using the TwinCAT SW for the out of box experience, then the most convenient way to power down the EVM is to remove the 24VDC supply.

    Starter kit: There is a HW powering switch, but is there SW functions for powering up/ shutting down?
    • If there is no such SW functions as default, is it possible to implement?

    see the above recommended Linux command.

    When using with Linux SDK (for starter kit) or RT Linux SDK (for IDK), is the default setting would be writing from SD card?

    Can you please clarify this question? I don't think I follow.

    If motor driver would not be used/connected, can the customer only use 5VDC?

    Do you mean to only provide a 5VDC input power supply instead of 24VDC since motors are not implemented in their use case? I am not an expert in the TPS5402 buck converter, but the way it is configured on the EVM looks specifically to regulate an input supply of 24VDC. I do not think the buck is configured correctly for 5VDC input.

    DM: https://www.ti.com/lit/ds/symlink/tps5402.pdf?ts=1640189876316&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTPS5402

    IDK Schematic Snippet:

    For both IDK and starter kit, can external SRAM be connected?

    How are you planning on integrating this? This would be an atypical use case with our EVMs that already have external RAM on the on boards.

    Regards,

    Colin