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Old 3rd October 2012, 09:09 AM   #1
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Default 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.
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Old 3rd October 2012, 10:40 AM   #2
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Any chance you might sell a pair? Also, have you got the datasheet? Because google with searching VT1728A filetypedf offers only one result with some motherboards in Japanese.
Cheers, Vic.
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Old 3rd October 2012, 10:48 AM   #3
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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?
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Old 3rd October 2012, 12:09 PM   #4
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Quote:
Originally Posted by Headbanger View Post
Any chance you might sell a pair? Also, have you got the datasheet? Because google with searching VT1728A filetypedf 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.
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Old 3rd October 2012, 12:23 PM   #5
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Quote:
Originally Posted by abraxalito View Post
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?
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Old 4th October 2012, 01:13 AM   #6
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As far as I'm aware, yes you do need a UAC2.0 driver, and it'll be proprietary which means $$$.
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Old 4th October 2012, 03:33 AM   #7
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Mac OS is an exception.
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Old 18th October 2012, 10:28 PM   #8
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The test board PCB is back.
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File Type: png VT1728A_TestBoard.png (489.0 KB, 140 views)
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Old 26th February 2013, 10:57 AM   #9
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Hello Panson, did you finish this board?
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