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Old 25th May 2010, 07:16 PM   #11
EUVL is offline EUVL  Europe
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I personally do not think isolation is so important.

As long as one uses completely separated power supplies for each chip (e.g. batteries for laptop, uP, clock, DAC, .....) and the ground is only connected from the preceeding stage to the following stage at a single point, and none or at most one of them to Earth, then ground noise is IMHO not an issue.

And for the solution we are looking at, this is entirely feasible. Only when you go for tube stage for an AD1865 would you really need a Tx based PSU, and even then the rest can still be battery powered.


Patrick
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Old 26th May 2010, 12:00 PM   #12
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received now:

----- Original Message -----
From: "Sales - XMOS" <sales@xmos.com>
To: "Andrea Ciuffoli" <webmaster@audiodesignguide.com>
Sent: Wednesday, May 26, 2010 1:00 PM
Subject: RE: XMOS Contact


Hi Andrea,

My apologies for the delay in replying. The cost of 150pcs USB Audio Reference Design is $125.00 each and the lead time is 6-8 weeks.

Regards

Becky
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Old 26th May 2010, 12:01 PM   #13
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I am still waiting the cost of the Xtremeusb solution.

Here a my temporary solution:

http://www.audiodesignguide.com/HiRe...404/index.html

Last edited by audiodesign; 26th May 2010 at 12:04 PM.
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Old 26th May 2010, 06:08 PM   #14
EUVL is offline EUVL  Europe
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No mention of software availability from xmos ?


Patrick
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Old 26th May 2010, 06:28 PM   #15
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Quote:
Originally Posted by EUVL View Post
No mention of software availability from xmos ?
Well, licensing and pricing. The software is there.
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Old 26th May 2010, 08:11 PM   #16
sampler is offline sampler  Lithuania
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Had a quick overview of xmos forum. Source code for this I2S reference design is available only by signing license of NDA. Had not seen any additional price mentioning. This should be considered from legal point of view. IMHO redistributing compiled binary files for non profit purposes, based on modified source should not be considered as violation of agreement, but this aspect should be not ignored before making any decision.
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Old 26th May 2010, 08:46 PM   #17
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They will soon be announcing prices (per chip) for licensing.
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Old 26th May 2010, 08:58 PM   #18
EUVL is offline EUVL  Europe
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Pc -> Dac, How ?
http://www.xmos.com/discuss/viewtopi...&t=712&start=0

Sounds like we are 6 months behind with this thing anyway.
Maybe the other guys are already further ahead ??


Patrick
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Old 26th May 2010, 10:14 PM   #19
dggs is offline dggs  United States
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Quote:
They will soon be announcing prices (per chip) for licensing.
Confused. Is XMOS a chip company or software company?
Making software/driver widely available should be a PROMOTION to their chips.
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Old 26th May 2010, 10:46 PM   #20
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TAS1020B, the only one I ever use.
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