AD-FMCJESDADC1-EBZ I2C documentation

I bought a AD-FMCJESDADC1-EBZ board based on 2x AD9250 ADC.

The AD9250 ADC is configurad via SPI, however the AD-FMCJESDADC1-EBZ board has a I2C bus that goes to a CPLD. From the CPLD an SPI bus with two CS lines go to each ADC. Where can I get information how to use the I2C lines to program the  AD9250 ADCs?

  • +1
    •  Analog Employees 
    on Aug 21, 2019 3:05 PM


    Sorry for the late reply.

    The CPLD is a black box for this design.

    You cannot use the I2C lines to program the ADCs, you need to use the SPI. Not sure where you saw the I2C connection to the CPLD, can you tell me what pins ?