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/4032/4270434423_70f20dac52_o.jpg
Soren
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/4032/4270434423_70f20dac52_o.jpg
Soren
Last edited:
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
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
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
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
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.
But after its PLL derrives the master clock from the word clock input any transport slave advantage is probably lost.
What are the advantages of VIA compared to
https://www.xmos.com/products/development-kits/usbaudio2
Available also as chip only from Digikey.
Seems to do similar things.....
Patrick
https://www.xmos.com/products/development-kits/usbaudio2
Available also as chip only from Digikey.
Seems to do similar things.....
Patrick
Haven't seen that yet, look VERY interesting, and much more DIY friendly.... I like parts that Digikey carry
I seems to be able to do everything, if you have the right software for it. So the question is software, how much source can you get.... And what about the Windows drivers, just say contact them. Which I will do....
Soren
Sorry, anything I do here, at least for now, will be a side project, so don't expect anything quickly from me.... Maybe somebody with more time will move faster
Soren
Soren,
> just say contact them. Which I will do....
http://www.diyaudio.com/forums/group-buys/166354-hiface-usb-i2s-24bit-192khz-6.html#post2185059
Andrea has done that already. You may contact him for details.
If you wish to go xmos, please join force with us.
Together we'll make more progress.
Patrick
> just say contact them. Which I will do....
http://www.diyaudio.com/forums/group-buys/166354-hiface-usb-i2s-24bit-192khz-6.html#post2185059
Andrea has done that already. You may contact him for details.
If you wish to go xmos, please join force with us.
Together we'll make more progress.
Patrick
Don't follow that group buy thread.... But I'll contact xmos directly anyway, often help when you have a company behind, which I have. And I like to get info directly from the source if possible....
I like to share ideas and info and sometimes the finished design. But if I do any actual design I will do it on my own, are not really a collaborate guy....
Soren
Personally I say wait it out, there will be a lot of product in 6 months to a year to chose from. I don't think now is the time to buy/invest in a USB-I2S implementation, nothing really meats the 3 requirements excpet the Ayre implementation and its just a mater of tim till the chinese copy it.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.