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Old 6th December 2011, 01:03 AM   #1
diyAudio Member
 
Join Date: Dec 2010
Default Music Main board for diyer

Music Main board for diyer.

I plan build embedded board for single purpose playing back music. May people can have suggest for my project.
The spec as follows
CPU :VIA NanoTM ULV 1.0 GHz 533 MHz 5.0 W @ FlexVID
Chipset: VIA VX800
Audio control IC: VIA Vinyl Envy24MT PCI Audio Controller on broad
Ram: DDR2 SDRAM 4G on broad
Audio clock X 2 :
1ppm TCXO49.152 MHz (for 48,96,192 KHz)
1ppm TCXO22.5792 MHz ( for 44.1,88.2,176.4 KHz)

PCI-E: north bridge PCI-E only for Audio control IC on broad
USB X 2

SATA X 2
Ethernet X 1
PS/2 X 1

Power:
Main broad power: DC 12V
FAN power: none, Fanless , CPU & chipset mount on back side of MB, the bottom of case can use as heat sink.
SATA HD power: None on MB, Supply from independence power supply
Audio control IC power: None on MB, Supply from independence power supply
Audio clock 1ppm TCXO power: None on MB, Supply from independence power supply

Output
SPDIF output X 1 (out put transformer Option)
I2S output X 1
VGA X1

Selector
Audio control IC DAC function En & disable
Audio control IC analog power En & disable
Display function En & disable

Disable
Disable Envy24MT ACD and analog input
Disable Envy24MT AC 97; AC link function.
Disable Envy24MT I2C out put.
Disable Envy24MT UART
Disable VX800 audio function

Connector :
power connector on broad ,
SATA connector on broad
VGA connector on broad
On/off connector on broad
LED connector on broad

Driver:
windows driver & Linux driver
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Old 9th December 2011, 12:04 PM   #2
GloBug is offline GloBug  Canada
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Join Date: Jun 2011
Sounds like a really cool project, subscribed.
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Old 11th December 2011, 12:27 PM   #3
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Join Date: Sep 2009
Quote:
Originally Posted by GloBug View Post
subscribed.
Me too. I would add:
- a wifi module, so that it's easier to control it via phone or link to a NAS;
- a mini storage, something like a CF, where to install a light OS like voyage mpd;
- IMHO there's too much ram, I think that 2 gb would be enough.

How do you think to realize/produce this project?
How much would cost a mainboard like this?
And what is the form factor?

Plus: would be really cool if you add also a suggested powersupply or a schematic to build it.

GREAT IDEA DUDE!
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Old 11th December 2011, 01:46 PM   #4
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Join Date: Dec 2010
Quote:
Originally Posted by acvtre View Post
Me too. I would add:
- a wifi module, so that it's easier to control it via phone or link to a NAS;
- a mini storage, something like a CF, where to install a light OS like voyage mpd;
- IMHO there's too much ram, I think that 2 gb would be enough.

How do you think to realize/produce this project?
How much would cost a mainboard like this?
And what is the form factor?

Plus: would be really cool if you add also a suggested powersupply or a schematic to build it.

GREAT IDEA DUDE!
hi Acvtre thanks for your input.
I think the wifi module make noise easy to audio signal, I try make a pure bit stream MB. So I think connent AP or HUB to make wifi function, Just for in case.

mini storage, Yes,I plan 64MB in BIOS for user.
Cause try to reduce PCI bridge complex, I didnt plan to use CF function. There is small SSD SATA cheap and fast for different OS.
One 24/192 program is almost 4G , After this project I hope can star another driver & program project, at that time upload play list to ram use DMA channel mapping to audio IC. so I think need that.


I got VIA pepole support to make it come turth. I didnt get all the cost. but I hope it will be lower 650 USD, I am not sure for now.

The form factor not decided and will not follow the PC base.

Power supply will make sound different. I do not know what is right way. Hope pepole can try then.

Hope I can make it.
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Old 11th December 2011, 03:56 PM   #5
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Join Date: Sep 2009
What have you got/done so far?
I mean have you already got a prototype or something similar or this one, that you have exposed is just an idea?
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Old 11th December 2011, 11:58 PM   #6
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Join Date: Dec 2010
Quote:
Originally Posted by acvtre View Post
What have you got/done so far?
I mean have you already got a prototype or something similar or this one, that you have exposed is just an idea?
Now is main broad design stage. Next trying make egineering sample and prototype.
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Old 14th January 2012, 11:52 AM   #7
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Join Date: Sep 2009
How's going the work?
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Old 17th January 2012, 06:19 PM   #8
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Which dac chip is going to be used? Or will MB contain I2S headers for external dac chip?
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Old 4th February 2012, 01:40 PM   #9
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I change the architecutre to intel atom E640, the first engineering sample will be done on the end of March. I will paste the picture then.

Quote:
Originally Posted by acvtre View Post
How's going the work?

Last edited by castleeric; 4th February 2012 at 02:07 PM.
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Old 4th February 2012, 01:50 PM   #10
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Join Date: Dec 2010
VIA Envy24 HT has DAC funtion. I chouse it because it support dual XO(48,44.1 base) input. But I will not use DAC function. There is I2S RJ45 connector on broad.

Last edited by castleeric; 4th February 2012 at 01:54 PM.
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