Hiface USB -> I2S 24bit/192Khz - diyAudio
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Old 5th May 2010, 12:30 PM   #1
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Default Hiface USB -> I2S 24bit/192Khz

To play high resolution materials like the 24bit 192KHz Studio Master it is necessary an USB to I2S interface to drive any DAC chip.

I have contacted M2Tech to produce this module with this specification:

http://www.audiodesignguide.com/M2TO...ov-08-2009.pdf

If we will arrive to 100 items they can produce and sell this module at 50 euro each.

Please add your member id in the following list and update the total:

2 x audiodesign
......


now the total is 2
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Old 5th May 2010, 12:40 PM   #2
regal is offline regal  United States
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How are they handling galvanic isolation? The datasheet link doesn't work.
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Old 5th May 2010, 12:43 PM   #3
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This is the link

http://www.audiodesignguide.com/M2TO...ov-08-2009.pdf
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Old 5th May 2010, 12:56 PM   #4
GuidoR is offline GuidoR  Italy
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Option 4, obviously?
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Old 5th May 2010, 01:06 PM   #5
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Hi Andrea.

very interesting GB

HiFace OEM is available in four models :

part.no. M2TOEM-01-1 is Bus powered
part.no. M2TOEM-01-2 is External 5V / Filtered bus power
part.no. M2TOEM-01-3 is External 3.3V + 1.8V
part.no. M2TOEM-01-4 is External 3.3V + 1.8V / Filtered oscillators pwr

M2TOEM-01-4 is the most flexible, external supplies for +1.8 +3.3 and Vosc (+3.3).. does Marco (m2tech) require a single model for this GB?

Ciao
Valeriano


EDIT : Guido you're faster than me
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Old 5th May 2010, 01:14 PM   #6
GuidoR is offline GuidoR  Italy
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faster than a sloth
work in progress
Attached Files
File Type: pdf DAC.pdf (7.1 KB, 1217 views)
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Old 5th May 2010, 01:15 PM   #7
regal is offline regal  United States
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The lack of galvanic isolation is an issue IMO, possibly enough to negate the benefit of forgoing SDPIF. Just know that Ayre uses optoisolators in their asynchrous USB DAC. I think we should push for it if we can.
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Old 5th May 2010, 01:28 PM   #8
GuidoR is offline GuidoR  Italy
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Quote:
Originally Posted by regal View Post
The lack of galvanic isolation is an issue IMO, possibly enough to negate the benefit of forgoing SDPIF. Just know that Ayre uses optoisolators in their asynchrous USB DAC. I think we should push for it if we can.
Ayre uses TAS1020 (Gordon Rankin/Wavelenght) that is limited to 24/96.
Back in this thread (#147) you'll find that it's impossible to galvanically isolate USB 2.0
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Old 5th May 2010, 01:37 PM   #9
regal is offline regal  United States
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Quote:
Originally Posted by GuidoR View Post
Ayre uses TAS1020 (Gordon Rankin/Wavelenght) that is limited to 24/96.
Back in this thread (#147) you'll find that it's impossible to galvanically isolate USB 2.0
Yes but who needs 24/192, better off limiting it to 24/96 and having a quality I2S, obviously Arye went for SQ over marketing specs, we push for the same IMO. No ones USB input beats the $2500 Ayre, this won't come close without the optoisolators.
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Old 5th May 2010, 02:09 PM   #10
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I own a hiFace, I'm interested, if I understand well is to extract I2S from hiFace, If yes I have several questions:

-Where will be connected, between the port USB & the hiFace?
-It's only a chip or is a finished product like the hiFace?
-I agree version 4 is the most flexible but can operate without external psu?
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