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raspberry:sound_card [2018/08/03 13:04] admin [GPIO use] |
raspberry:sound_card [2018/08/03 13:24] admin [Use of GPIOs] |
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| * for the 4.x kernel [[https:// | * for the 4.x kernel [[https:// | ||
| - | ==== GPIO use ==== | + | It's recommended **not to use earphones directly** it's not supported.\\ |
| - | GPIO 2-3 (pins 3 and 5) are used for configuration | + | |
| - | GPIOs 18-21 (pins 12, 35, 38 and 40) are used for the sound interface | + | ---- |
| + | ==== Use of GPIOs ==== | ||
| + | The following GPIOs are used for the Sound Card:\\ | ||
| + | For configuration | ||
| + | GPIO2 (SDA 1) and GPIO3 (SCL1\\ | ||
| + | |||
| + | And as the sound interface | ||
| + | GPIO18 (PCM CLK), GPIO19 (PCM FS), GPIO20 (PCM D-IN), GPIO21 (D-OUT).\\ | ||
| + | PCM stands for Pulse-Code Modulation.\\ | ||
| < | < | ||