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Old 27th May 2010, 12:26 AM   #21
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What's the difference between the board that they sell in Digikey and the one the was offered to Andrea? Is it just a 24 $ discount ?

D.
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Old 27th May 2010, 03:02 AM   #22
EUVL is offline EUVL  Europe
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Xmos is chip company. Then they realise that they have a application design which can make money, so .....

Board is the same as Digikey. Just discount.

As already discussed, the board has features we do not need (e.g. SPDIF, Toslink,...), and does not have things that we want (remote clock, separate PSUs, ....). So no pint in paying 150 USD for that other than convenience. IMHO better to buy chip & software and DIY the rest.


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Old 27th May 2010, 05:30 AM   #23
grufti is offline grufti  United States
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My "price point" for this project as a diy module is less than $40. Any price above that would have me looking at Twisted Pear Audio and some of the other sources of diy pcb's and/or diy kits and/or fully commercial products for a solution.
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Old 27th May 2010, 06:37 AM   #24
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I would like to propose to Eric Juaneda, this:

We can send 5$ each to Eric Juaneda to buy these 4 boards/module:

1) Musiland 01 usb
2) Xtremeusb XD1014EVB
3) Xmod Audio evaluation board
4) HiFace USB ->Spdif

after he will make a comparasion test and he could publish the results.

If the Xmod or the Xtremeusb are good like the other commercial products he can develop a custom module with these chips.

In this case the cost should be very low and we are sure of the result.

OK ?
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Old 27th May 2010, 08:13 AM   #25
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Hello audiodesign,
Quote:
Originally Posted by audiodesign View Post
I would like to propose to Eric Juaneda, this:

We can send 5$ each to Eric Juaneda to buy these 4 boards/module:

1) Musiland 01 usb
2) Xtremeusb XD1014EVB
3) Xmod Audio evaluation board
4) HiFace USB ->Spdif

After he will make a comparison test and he could publish the results.

If the Xmod or the Xtremeusb are good like the other commercial products he can develop a custom module with these chips.

In this case the cost should be very low and we are sure of the result.

OK ?
This project is probably not so simple! To integrate an OEM chip, you must accept manufacturer's term and conditions. You can't buy only few ICs from manufacturer. Integrating an OEM chip is a real commercial project needing time and money. Choosing chip is not only a technical choice. It is not necessary to perform test with IC that you can't buy.

Before buying any IC, you must be able to solve all technical and commercial problems.

1) Musiland 01 usb
Chinese manufacturer, it seems they are not interested by 150 pieces. Working with Chinese company is not the same as working with European or US Company.

2) Xtremeusb XD1014EVB
The evaluation board is not ready. Wait and see...

3) Xmod Audio evaluation board
It steels some interrogations about drivers.

4) HiFace USB ->Spdif
Why not.

There are many pro Diyaudio members who are following this thread with interest and having same interrogations. There was a lot of work already done by Diyaudio community; there is a lot of work to do again before ending project. Each of one can add its own contribution.
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Old 27th May 2010, 10:01 AM   #26
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Quote:
Originally Posted by audiodesign View Post
...after he will make a comparision test and he could publish the results.
If the Xmod or the Xtremeusb are good like the other commercial products he can develop a custom module with these chips...
The global results depends of the global environment: good environment -> good result; poor environment -> poor result.
All these chips can be equivalent since they work in asynchronous mode and are bit fluency.

I join bloc diagram of an USB DAC (NOS or OS) whatever the OEM chip used.
Attached Images
File Type: gif USB DAC.GIF (6.4 KB, 1228 views)
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Old 27th May 2010, 10:18 AM   #27
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Eric,
it mean that you accept but with reserve ?

I hope to have all the answer about the Xmos and XtreemUSB in this week.
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Old 27th May 2010, 10:30 AM   #28
chertk is offline chertk  Russian Federation
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Hi, Eric!

I think you forgot include control signal for clean clock switch originating from OEM chip.
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Old 27th May 2010, 10:35 AM   #29
UnixMan is offline UnixMan  Europe
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Quote:
Originally Posted by EUVL View Post
Pc -> Dac, How ?
XMOS Support Board • View topic - USB 2.0 Audio: How many channels?

Sounds like we are 6 months behind with this thing anyway.
Maybe the other guys are already further ahead ??
Oh! shame on me, I had seen the other thread some time ago but forgot about it!

I guess we should join the efforts...
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Last edited by UnixMan; 27th May 2010 at 10:44 AM.
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Old 27th May 2010, 10:40 AM   #30
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Hi chertk,
Quote:
Originally Posted by chertk View Post
Hi, Eric!

I think you forgot include control signal for clean clock switch originating from OEM chip.
Yes.
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