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Old 16th May 2010, 03:08 AM   #591
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Hi Bunpei,

I am using the XMOS USB 2.0 audio module with custom firmware and some slight hardware mods right now, and designing my own solution in the mean time. I also have their driver along with some work of my own.

Drivers will be somewhat a challenge, at least in regard to Windows. I am working that out as well. For now I am having to rely and what I can either write myself or get from XMOS.

The important thing is that the hardware hurdle is solved. The driver hurdle is completely solvable as well.

More details as I can give them. Things are progressing.

Cheers!
Russ
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Last edited by Russ White; 16th May 2010 at 03:11 AM.
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Old 16th May 2010, 03:30 AM   #592
Bunpei is offline Bunpei  Japan
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Quote:
Originally Posted by Russ White View Post
Drivers will be somewhat a challenge, at least in regard to Windows. I am working that out as well. For now I am having to rely and what I can either write myself or get from XMOS.

The important thing is that the hardware hurdle is solved. The driver hurdle is completely solvable as well.
I appreciated your explanation very much! Thank you.

May I understand that you have already succeeded in playing a whole DXD file in your preliminary environment that cosists of PC or Mac, USB 2.0 I/F and modified XMOS USB audio 2.0 reference board?

Bunpei
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Old 16th May 2010, 03:44 AM   #593
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Quote:
Originally Posted by Bunpei View Post
I appreciated your explanation very much! Thank you.

May I understand that you have already succeeded in playing a whole DXD file in your preliminary environment that cosists of PC or Mac, USB 2.0 I/F and modified XMOS USB audio 2.0 reference board?

Bunpei
Indeed I have.

Right now the Mac is the simplest route.

And if I were not under NDA I would explain exactly how I am doing it.

Cheers!
Russ
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Old 16th May 2010, 03:58 AM   #594
Bunpei is offline Bunpei  Japan
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Quote:
Originally Posted by Russ White View Post
Indeed I have.

Right now the Mac is the simplest route.
What an admirable achievement!
It will much facilitate a spread of DXD file play in audiophile communities.
I believe DXD files are worth listening and hope more sources available other than those in 2L leading-edge demonstration.

Bunpei
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Old 16th May 2010, 04:39 PM   #595
glt is offline glt  United States
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You don't have to clock divide at all if you really don't want to. One could reclock all data to the highest supported rate. In any case it is not something I am going to worry about much. ...

...
I don't worry about that either. Just some theoretical/engineering sanity check to balance all the "ear-only" engineering out there :-)

Thanks for the update.
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Old 16th May 2010, 10:34 PM   #596
Will2 is offline Will2  Bermuda
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Default Anyone have a wiring diagram?

Hi,

I'm taking on a BuffaloII as my first DIY project and so far I'm having great fun. I've assembled the DAC, IVYIII, Placid and Placid BP. I'm planning on building it to be fed with both a toslink module and a USB/SPDIF converter and installing both single-ended and balanced outputs. I might be able to figure it out, but I'm not sure and would rather be safe than sorry. Can anyone help?

Cheers
Will
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Old 17th May 2010, 12:13 AM   #597
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Quote:
Originally Posted by Will2 View Post
Hi,

I'm taking on a BuffaloII as my first DIY project and so far I'm having great fun. I've assembled the DAC, IVYIII, Placid and Placid BP. I'm planning on building it to be fed with both a toslink module and a USB/SPDIF converter and installing both single-ended and balanced outputs. I might be able to figure it out, but I'm not sure and would rather be safe than sorry. Can anyone help?

Cheers
Will
Hope this will get you going.
Attached Files
File Type: pdf Simple B-II and IVY-III.pdf (34.1 KB, 296 views)
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Old 17th May 2010, 12:33 AM   #598
Will2 is offline Will2  Bermuda
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Hope this will get you going.
That looks great - thanks Russ!!
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Old 17th May 2010, 06:28 PM   #599
glt is offline glt  United States
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You don't have to clock divide at all if you really don't want to. One could reclock all data to the highest supported rate. ...
I suppose if you send 44.1K material at 8X re-sampled, this would correspond to 352.8K (which you plan to support). With 32bit per channel I2S, this corresponds to a clock of 22.5792 MHz. Makes sense, makes sense...

Are you planning and I2C interface for the board? Also since the chip is basically a computer, would you add HDCD with transient filters? :-)
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Old 17th May 2010, 06:35 PM   #600
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Dear Russ:

outstanding work!

You have a customer in me for a few of them I might be old fashioned using only Windows XP SP3 on my computers

May I ask what chip you have signed an NDA for?



Regards,


Quote:
Originally Posted by Russ White View Post
Indeed I have.

Right now the Mac is the simplest route.

And if I were not under NDA I would explain exactly how I am doing it.

Cheers!
Russ
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