Cubietruck + PCM1794A. Anyone?

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Cubietruck + PCM1794A. Anyone?

Postby codewarrior » 04 Dec 2015, 16:10

Hello all,

I'm very new on this world of Cubietruck and Raspberry Pi boards development. I have a cubietruck board and I was wondering if is possible to implement on it the Texas Instruments PCM1794A DAC? Are the drivers available?

DAC: http://www.ti.com/product/pcm1794a

Cubietruck I2S specs: https://hifiduino.wordpress.com/2014/03 ... for-audio/
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Re: Cubietruck + PCM1794A. Anyone?

Postby hondagx35 » 04 Dec 2015, 17:09

Hi codewarrier,

the I2S drivers are installed and work.
You only have to make the hardware modifications from your link.

Frank
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Re: Cubietruck + PCM1794A. Anyone?

Postby codewarrior » 04 Dec 2015, 20:33

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Re: Cubietruck + PCM1794A. Anyone?

Postby codewarrior » 07 Dec 2015, 16:03

After doing some further investigations, the I2S bus clock of the CT can reach up to ~24MHz only which you can have a sample rates of 24/48 only. Is a bit disappointing. But I saw this, and wanted to ask also if RuneAudio has drivers for the XMOS chip which is a USB to I2S converter,

Asynchronous USB-to-I2S interface
http://luckit.biz/
Up to 384kHz
Up to 32-bit data

I think that using this USB interface along with a high end DAC is the way to go, instead of doing the modifications needed on the CT to use its slower I2S interface.

What you think?
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Re: Cubietruck + PCM1794A. Anyone?

Postby hondagx35 » 07 Dec 2015, 18:45

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Re: Cubietruck + PCM1794A. Anyone?

Postby codewarrior » 07 Dec 2015, 19:37

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