i2c/potentiometer/analog_devices_ad5258/README

   1 -------------------------------------------------------------------------------
   2 Analog Devices AD5258 digital potentiometer
   3 -------------------------------------------------------------------------------
   4
   5 This is a set of example captures of the I²C traffic to/from an Analog
   6 Devices AD5258 digital potentiometer.
   7
   8 Details:
   9 http://www.analog.com/en/products/digital-to-analog-converters/digital-potentiometers/ad5258.html
  10 http://www.analog.com/media/en/technical-documentation/data-sheets/AD5258.pdf
  11
  12
  13 Logic analyzer setup
  14 --------------------
  15
  16 The logic analyzer used was a CWAV USBee AX (at 4MHz):
  17
  18   Probe       AD5258 pin
  19   ----------------------
  20   0 (black)   SCL
  21   1 (brown)   SDA
  22
  23   Analog      AD5258-controlled voltage elsewhere on the PCB
  24
  25
  26 Data
  27 ----
  28
  29 The data contains various digital potentiometer communication, e.g. reading
  30 and writing the RDAC register, reading/writing the internal EEPROM, etc.