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Original question:

[FAQ] AM6422: How to configure the PCIe align with the simulation results.?

TPS65219: TPS6521902 nINT is low.

wang shu
Intellectual 300 points
Part Number: TPS65219

Tool/software:

Hi,

The nINT of TPS6521902 on my board is always low. all output power are correct. another board nINT signal is normal high with same output and conditions.

I am not sure what could trig the nINT to low if all output voltage are correct. What should i check

Regards,
Shu

  • 0
    TI__Expert 6245 points

    Hi Shu,

    Thank you for reaching out on e2e.

    So, you confirmed that all 7 output rails (Buck1-3, LDO1-4) are same between the 2 boards. If you have access to I2C of the PMIC, can you try to read register 0x2B, that will tell the interrupt source. If any bits of that register is '1', you can continue to read registers 0x2C to 0x32 to find out more about the interrupt source.

    Also, please make sure that pull up resistor and voltage are present on nINT pin on the board of question.

    Sathish