projects / sigrok-dumps.git / blame
| Commit | Line | Data |
|---|---|---|
| 861f31e1 UH |
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. |