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Analog Devices AD5258 digital potentiometer
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This is a set of example captures of the I²C traffic to/from an Analog
Devices AD5258 digital potentiometer.

Details:
http://www.analog.com/en/products/digital-to-analog-converters/digital-potentiometers/ad5258.html
http://www.analog.com/media/en/technical-documentation/data-sheets/AD5258.pdf


Logic analyzer setup
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The logic analyzer used was a CWAV USBee AX (at 4MHz):

  Probe       AD5258 pin
  ----------------------
  0 (black)   SCL
  1 (brown)   SDA

  Analog      AD5258-controlled voltage elsewhere on the PCB


Data
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The data contains various digital potentiometer communication, e.g. reading
and writing the RDAC register, reading/writing the internal EEPROM, etc.