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-   -   VT1728A USB audio controller (http://www.diyaudio.com/forums/digital-source/220888-vt1728a-usb-audio-controller.html)

panson_hk 3rd October 2012 09:09 AM

VT1728A USB audio controller
 
I got 100 pcs of VT1728A (VIA Vinyl EnvyUSB 2.0 8-Channel Audio Controller - VT1728A - VIA Technologies, Inc.) and considering a good project for it.

Headbanger 3rd October 2012 10:40 AM

Any chance you might sell a pair? Also, have you got the datasheet? Because google with searching VT1728A filetype:pdf offers only one result with some motherboards in Japanese.
Cheers, Vic.

abraxalito 3rd October 2012 10:48 AM

That data page is confusing - its USB full-speed (12Mbits) but also has USB high-speed (480Mbits) PHY on board and supports sample rates up to 192k. How to reconcile those two conflicting aspects as USB full-speed only supports up to 96k and two channels in my understanding?

panson_hk 3rd October 2012 12:09 PM

Quote:

Originally Posted by Headbanger (Post 3188487)
Any chance you might sell a pair? Also, have you got the datasheet? Because google with searching VT1728A filetype:pdf offers only one result with some motherboards in Japanese.
Cheers, Vic.

The data sheet is under NDA. Selling the part alone violates the purchasing terms. I am going to build small qty test boards for hardware/firmware testing. The board has nothing more than essential components such as USB socket, a 6 MHz crystal, serial flash and pin headers. It can be available to forum members.

panson_hk 3rd October 2012 12:23 PM

Quote:

Originally Posted by abraxalito (Post 3188495)
That data page is confusing - its USB full-speed (12Mbits) but also has USB high-speed (480Mbits) PHY on board and supports sample rates up to 192k. How to reconcile those two conflicting aspects as USB full-speed only supports up to 96k and two channels in my understanding?

I am also asking the supplier about this. Do I need audio class 2.0 driver for 24-bit, 192 k and multichannel streaming?

abraxalito 4th October 2012 01:13 AM

As far as I'm aware, yes you do need a UAC2.0 driver, and it'll be proprietary which means $$$.

panson_hk 4th October 2012 03:33 AM

Mac OS is an exception. :)

panson_hk 18th October 2012 10:28 PM

1 Attachment(s)
The test board PCB is back.

3gigahertz 26th February 2013 10:57 AM

Hello Panson, did you finish this board?


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