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Table of Contents
Sound Card for the Raspberry Pi
The PiFi DAC+ is a cheap Chinese clone of the HiFi Berry made by ukonline2000. It's based on the I2S digital audio converter (DAC) chip PCM5122.
The drivers are already included in the kernel, to activate them check:
- for the 3.12 kernel https://www.hifiberry.com/build/documentation/hifiberry-software-configuration/
- for the 4.x kernel https://www.hifiberry.com/build/documentation/configuring-linux-3-18-x/.
It's recommended not to use earphones directly it's not supported.
Use of GPIOs
The following GPIOs are used for the Sound Card:
For configuration over I2C:
GPIO2 (SDA 1) and GPIO3 (SCL1
And as the sound interface over I2S:
GPIO18 (PCM CLK), GPIO19 (PCM FS), GPIO20 (PCM D-IN), GPIO21 (D-OUT).
