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AM6548: About the output signal pin of PRU_ICSSG UART

tomitama
Expert 1090 points
Part Number: AM6548
Other Parts Discussed in Thread: TMDX654IDKEVM

We have verified the operation on TMDX654IDK EVM.

For the PRU_ICSSG UART (6.5.8 PRU_ICSSG UART Module) described in the am65xx reference manual, let me check how to check the operation of UART transmission / reception.
Is the output signal of this UART output from the micro B connector (J42)?
Or is it output to some test pin on TMDX654IDKEVM?

  • 0
    TI__Genius 10180 points

    Tomitama,

    The connections can be checked via schematics listed under Design Files here:  https://www.ti.com/tool/TMDX654IDKEVM.  The signal names used in the schematics do not have UART listed, so use the ball pin number to locate these signals.

    I sanity checked the connection using the CTS signal, which is shown as prg0_pru0gpo9 and prg1_pru0gpo9 in the IDKEVM schematics, and noticed they are routed to the application connector board.  PRG0 CTS is used as reset on the application board while PRG1 is connected to a load pulse input of SN65HV885 serializer.  I would recommend probing at the application connector header (J18) without the application board.

    If you want to probe at J42 USB header, you should use UART0, MCU_UART1, WKUP_UART0, or UART1 signals for your application.

    Best Regards,

    Shiou Mei

  • 0 in reply to Shiou Mei Huang
    Expert 1090 points

    Hello Shiou Mei,
    Thank you for your reply.

    I understand your answer.
    Thank you very much.