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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. |