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-   -   New USB 2.0 192 Khz 24 bit controller chip.... (http://www.diyaudio.com/forums/digital-line-level/165573-new-usb-2-0-192-khz-24-bit-controller-chip.html)

soekris 22nd April 2010 12:52 PM

New USB 2.0 192 Khz 24 bit controller chip....
 
There will finally be a chip for highend USB interfaces, VIA Tech is launching the new Envy VT1730, which is a USB 2.0 high speed interface chip, with multiple SPDIF and I2S interfaces....

I know, you can't just buy one, but I happens to use a lot of VIA ethernet controllers in my day job, so I have good access to VIA. Maybe do a board with the new part....

More info: VIA Vinyl EnvyUSB 2.0 Audio Controller - VIA Technologies, Inc.
Eval board: http://farm5.static.flickr.com/4032/...f20dac52_o.jpg

Soren

qusp 22nd April 2010 01:17 PM

for sure I would be interested. only problem I see with a DIY project is its likely to include an NDA. I posted about this a while ago, thats one hell of a crazy looking eval board! blew my mind when I saw it last time I looked

soekris 22nd April 2010 01:26 PM

Didn't see your post, tried to do a search before posting....

NDA required, but I do have that, could do a "module" with I2S....

I see two needs:

1) Board especially for Audio measurements
2) Board for high end general Audio I/O

Soren

qusp 22nd April 2010 01:47 PM

wasnt a thread, was a post, so its not surprising you didnt find it. no I just suggested it as a usb controller for one of the input boards for the ackodac sabredac. jkeny ended up putting together a modified MTECH HIFACE for it, but I would much prefer a proper input board with the possibility of multichannel.

what I meant was, only you or whoever had the NDA would be able to build up the board, meaning only fully populated boards could be bought from you. interesting, but not ideal, because unless you offered something the mtech doesnt ie multichannel, or it was considerably cheaper than buying a hiface and modding it yourself, there really isnt anything gained and I would rather just stick to something I have some input into. i'll still be watching though

analog_sa 22nd April 2010 05:40 PM

Quote:

Originally Posted by soekris (Post 2162355)
There will finally be a chip for highend USB interfaces,




High end but not async? The Hiface seems a lot more high end after tweaking.

soekris 22nd April 2010 09:35 PM

Async or not, but the VIA chip seems to have support for a word clock input, so you would generate the master clock....

The hiface is not bad, but I want to go directly to I2S.... And probably cheaper, VIA chips are usually not that expensive :-)

It also seems like that the hiface use special drivers, VIA will probably be more standard, although I don't know the details yet.

I don't know yet what would be possible to offer, but I could imagine doing a small board with I2S I/O....

Soren

analog_sa 23rd April 2010 06:45 AM

Quote:

Originally Posted by soekris (Post 2162937)
The hiface is not bad, but I want to go directly to I2S....

A tiny bit of surgery seems to solve this. And the custom drivers are essential if you want async. All in all, unless Gordon suddenly gets interested in selling TAS1020b chips and drivers to diyers, the hiface appears to be the only route to good USB sound.

regal 4th May 2010 08:35 AM

Quote:

Originally Posted by soekris (Post 2162937)
Async or not, but the VIA chip seems to have support for a word clock input, so you would generate the master clock....



Soren

But after its PLL derrives the master clock from the word clock input any transport slave advantage is probably lost.

novec 12th May 2010 06:03 PM

Either way - I'm interested in whatever comes out of this! Just get it done fast, before I finish my Lynx AES16 multidac ;-)

MWP 13th May 2010 12:33 AM

Very very interested!!


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