I started my DAC project for the Raspberry Pi. The first version runs as an I2S slave device and already works very well. On-chip PLL automatically syncs to different clock frequencies. Analog power is supplied by an additional low-noise voltage regulator.
HiFiBerry Mini | Crazy Audio
I will do more measurements next week.
Version 2 is in design phase. It will be a bit more complex:
- onboard oscillator, runs as I2S master
- DAC chip with I2C control (volume control, sample rate, minimal DSP postprocessing)
Regards
Daniel
HiFiBerry Mini | Crazy Audio
I will do more measurements next week.
Version 2 is in design phase. It will be a bit more complex:
- onboard oscillator, runs as I2S master
- DAC chip with I2C control (volume control, sample rate, minimal DSP postprocessing)
Regards
Daniel
I did some tests with RaspyFi today. It works like a charm I can even play 192/24 FLAC files without any problems
So, we have a working USB platform then?
Brgds
@smallangryboy: There are 2 eval boards of the prototype, these are already reserved for 2 guys. There might be another 2 eval boards of version 2. The phono sockets will be parts of the kist, however, you do not have to solder them on the board.
@Turbon: This is not a USB DAC, it connects directly to the I2S port of the SoC.
@Turbon: This is not a USB DAC, it connects directly to the I2S port of the SoC.
Last edited:
This is a great piece of work! Of course the really hard part was getting a working ALSA driver for the Pi's onboard I2S.
There have been a few fixes for the USB issues and RaspyFi incorporates them. If you had trouble running a USB soundcard before, then give it a go, you may be pleasantly surprised.
There have been a few fixes for the USB issues and RaspyFi incorporates them. If you had trouble running a USB soundcard before, then give it a go, you may be pleasantly surprised.
Of course the really hard part was getting a working ALSA driver for the Pi's onboard I2S.
You're totally right. And I want to thank all people that worked on it!
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Source & Line
- Digital Line Level
- My DAC for the Raspberry Pi