[diy] Another USB to multichannel I2S with I2C ?

egberttheone · 16th March 2013, 09:11 PM

I was wondering if anyone is interested in a device that can do this:
Async. USB to
- 8 channel i2s 24bit/192khz
- i2c master

The i2c is accessible using API calls.
This i2c future is lacking on all of the USB-I2S boards I have seen so far.
The idea: building a circuit based on the XMOS L2 IC.
Using the XMOS IC will drastically decrease engineering time as the software is open source, and needs only minor modification.
I was thinking about a stackable board; like the Arduino.
Using this method we can keep the base board simple and affordable, and you can choose your own crystal for the master clock, or add optical interfaces etc. etc. .

q: Why not build it yourself?
a: XMOS requests a MQT for getting a license for the software (Thesycon USB Audio Class 2.0).

phofman · 17th March 2013, 12:30 PM

I2C could be conveniently used for analog volume control and e.g. input switching. If these were turned into standard USB-audio controls, their support in the PC (esp. volume control) should be relatively simple.

16th March 2013, 09:11 PM	#1
egberttheone diyAudio Member Join Date: Nov 2006	[diy] Another USB to multichannel I2S with I2C ? I was wondering if anyone is interested in a device that can do this: Async. USB to - 8 channel i2s 24bit/192khz - i2c master The i2c is accessible using API calls. This i2c future is lacking on all of the USB-I2S boards I have seen so far. The idea: building a circuit based on the XMOS L2 IC. Using the XMOS IC will drastically decrease engineering time as the software is open source, and needs only minor modification. I was thinking about a stackable board; like the Arduino. Using this method we can keep the base board simple and affordable, and you can choose your own crystal for the master clock, or add optical interfaces etc. etc. . q: Why not build it yourself? a: XMOS requests a MQT for getting a license for the software (Thesycon USB Audio Class 2.0).

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17th March 2013, 12:30 PM	#2
phofman diyAudio Member Join Date: Apr 2005 Location: Pilsen	I2C could be conveniently used for analog volume control and e.g. input switching. If these were turned into standard USB-audio controls, their support in the PC (esp. volume control) should be relatively simple.