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DS90UB925Q I2C Pass Through mode

Patrick Chen
Mastermind 8875 points

Hello,

           we would like to use DS90UB925Q I2C pass through mode to DES to remote control slave device that is Aptina Sensor. But while set pass through mode 1 to enable, 925Q will be recovery to 0 so can't set pass through mode successful. Does any other register are needed to setting also or have other suggestion for this issue? Thank you.

BR

Patrick

  • 0
    TI__Genius 14015 points

    Hi Patrick,

    What do you mean by the 925 is 'recovery to 0'? 

    Let me know if my assumptions are correct: There is an I2C Master on the 925 side, and there is an I2C Slave device on the DES side.

    In order to get I2C messages to propagate across the FPD-Link, I2C Pass-through needs to be set on the 925 (register 0x03[3]). The slave ID and slave alias also need to be set (registers 0x07 and 0x08). In most cases these will both be set to the slave address.

    Thanks,
    Jason