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DS90UB925Q-Q1: DS90UB925QSQ//DS90UB926QSQX/NOPB question

Sherry Liang
Genius 10255 points
Part Number: DS90UB925Q-Q1

Hi team,

The 926 925 topology is as follows, mainly want to implement cpu-i2c-926-925-i2c-slavex, to configure the slave. Then read the business data back;

At present, it is found that the slave cannot be queried through the CPU. It may be a configuration problem. The current 926 configuration is as follows：

The register is read back as follows (0x1C=02 is found, it is not clear why)

Could you please help confirm if there is a problem with the 926 configuration?

Thanks & Best Regards,

Sherry

  • 0
    TI__Mastermind 30515 points
    Hi,
    to visit the slave I2C from the UB926 side, you should set the UB926's reg.:
    1. i2c pass through enable
    2. UB925's alias I2C addr.
    2. slave add. and slave alias addr.
    3. you can visit the remote slave device with this slave alias addr.

    regards,
    Steven