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SN65DSI86IPAPRQ1 X EDID

Marcus Zanon
Prodigy 10 points

I would like to know if SN65DSI86IPAPRQ1 can read and write Displayport  EDID from through I2C over aux interface

  • 0
    TI__Mastermind 18655 points
    Hello Marcus,

    Two methods are available for reading the EDID: direct method and indirect method.
    1. Using the direct method, SW needs to program I2C_ADDR_CLAIMx registers and enable them. Once this is done, any I2C transaction that targets the I2C_ADDR_CLAIMx address will be translated into a I2C-Over-AUX transaction. In order to use the direct method, the I2C master must support clock stretching.
    2. Using the indirect method, SW needs to use Native and I2C-Over-Aux registers. When using the indirect method, the max read size allowed is 16-bytes. This means reading the EDID must be broken into 16-byte chunks.

    Refer to 8.4.5.3 section of the device datasheet.

    Regards,
    Joel