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DS90UB914A-Q1: Which registers on the TI914 should be monitored to check that the quality signal which is going out from the TI914 is OK?

Part Number: DS90UB914A-Q1

Hello

I am using the TI913 & TI914 serdes.

The HW is as follow:

- image sensor --> TI913 --> Fakra cable --> TI914 --> ISP.

According to some ISP's registers, the signal which is arriving at the ISP is unstable.

Which registers on the TI914 (and also Ti913) should be monitored to check that the quality signal which is going out from the TI914 is OK?

Thanks,

Muriel

  • Hello Muriel,

    Thank you for your question. There are a few registers that can be useful for monitoring and diagnostics. For the 913, registers 0x0A and 0x0B report a count of CRC errors, which are errors that occur on the back channel. Register 0x0C also logs the lock and PCLK status as well as the deserializer CRC error flag, which can be a good way to check if the system and devices are recognizing each other and behaving as expected. For the 914, registers 0x1A and 0x1B report a count of parity errors, which are errors that occur on the forward channel. Register 0x1C also has a parity error flag as well as a lock status and serial input status. These bits can verify that the 914 is properly locked and receiving a signal from the 913. Register 0x22 also includes a bit for the forward channel sequence error flag.

    Regards,
    Darrah