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TDA4VM-Q1: I/O Port - Reverse Current

jinhwan Jeong
Prodigy 170 points

Part Number: TDA4VM-Q1

We would like to inquire about abnormal operation of TDA. The TDA4 did not supply power and did not operate.
However, it is measured as 0.6V at the RGMII6_RXC port (W26).

The I/O port connected with TDA4 is the I2C interface of MCU.

If the current from the I2C port flows back into the TDA4, Can power be measured on I/O ports on the TDA4?

  • 0
    TI__Guru 57377 points

    Hello, If the SoC is not powered then voltage should not be applied on most of the IOs.  The only IOs that are allowed to have voltage supplied are those that are described as Fail Safe in the data manual.

    Regards,

    Kyle