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TPS65313-Q1: Regarding the reset pin connection of RM57L843 and TPS65313

kwanyoung lee
Prodigy 20 points
Part Number: TPS65313-Q1
Other Parts Discussed in Thread: RM57L843

I am using RM57L843 and TPS65313.

However, when nRST of DSP and NRES of TPS65313 are connected, the following error occurs when downloading jtag.

If nRST of dsp and NRES of TPS65313 are not connected, JTAG download works well.

I want to know what is the cause.

 

Thank you

  • 0
    TI__Expert 8730 points

    Hello, It is very difficult to say what is happening in your system based on the information you have provided. Can you please check whether PMIC NRES is stable when you connect it to NRST of RM57L843 ?  As long as PMIC is providing all the supplies and NRES is high, from PMIC side, there should not be any issues and you need to check with RM57L843 datasheet on why this is happening. It may be that while doing the JTAG programming, nRST of RM57L843 should be low?

    Regards,

    Murthy