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Topic: PC interface card with i2S output (Read 9870 times) previous topic - next topic
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PC interface card with i2S output

Hi,
Hope someone can help.  I have a North Star Dac which has an I2S input that i want to connect to my PC.  I have searched around but so far have drawn a blank.

Does anyone know of a PC card that provides an I2S audio output?

I am aware of product from Empirical audio but dont really need another Dac or any sample rate conversion as the North Star will fill this role.

Your help would be appreciated

PC interface card with i2S output

Reply #1 –
Quote from: complin on
Hi,
Hope someone can help.  I have a North Star Dac which has an I2S input that i want to connect to my PC.  I have searched around but so far have drawn a blank.

Does anyone know of a PC card that provides an I2S audio output?

I am aware of product from Empirical audio but dont really need another Dac or any sample rate conversion as the North Star will fill this role.

Your help would be appreciated


Good question, been looking myself for transports with some form of I2S output, but suspect non exists (well, PC based solution anyway.) I beleive there is a modification out there for the squeezebox for I2S, though you'd have to google.

How is the North Star DAC? There's a few DAC's now that have I2S inputs, but cant find anything with a I2S output to feed them with :-)

PC interface card with i2S output

Reply #2 –
[quote name='adieadie' date='Jul 13 2008, 16:46' post='576876']

[/quote]

Good question, been looking myself for transports with some form of I2S output, but suspect non exists (well, PC based solution anyway.) I beleive there is a modification out there for the squeezebox for I2S, though you'd have to google.

How is the North Star DAC? There's a few DAC's now that have I2S inputs, but cant find anything with a I2S output to feed them with :-)
[/quote]

Maybe this is of interest?
http://www.rage3d.com/reviews/sound/auzent...n/index.php?p=2

PC interface card with i2S output

Reply #3 –
Quote from: complin on
Does anyone know of a PC card that provides an I2S audio output?


Yes, me ;-)

The Aztech PCI168 (AZF3328) has unmounted I2S output pins.
While some would consider this card to be an "el-cheapo heap of crap" (BTW, Windows hasn't bothered to support it in ages!), there's my pretty sophisticated Linux ALSA driver for this card which could be extended pretty easily to have support for the I2S port, too (simply copy&paste the existing DAC port code for the I2S port, that should work in a snap).
I intend to add code support for the I2S connector once there's better code modularization (the registers are simply 16 ports for DAC, 16 for ADC, and another 16 for I2S, which could be supported by one and the same functions each if properly abstracted, which sadly isn't the case yet).

PC interface card with i2S output

Reply #4 –
The North Star DAC contains an AD1895 ASRC IC. That means that a low jitter I2C link will give identical results to to a S/PDIF link, even one with considerable amounts of jitter. The AD1895 will simply provide the same (re-aligned) output in both cases.