Drive NOS AD1865/62,PCM1704/02/63,TDA1541 from FIFO: Universal I2S-PCM driver board - Page 54 - diyAudio
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Old 12th September 2013, 01:03 PM   #531
vzs is offline vzs  Europe
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Originally Posted by iancanada View Post
Hi Drew,

Another good point. Yes, they are on the bottom side of PCB. I'll discuss with vzs to see if we should include the layout of the other side into users manual.

Thank you so much!

vzs:

What do you think?

Ian
Good idea, it slipped my attention that are mentioned components from the bottom side.

Zsolt
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Old 13th September 2013, 05:40 AM   #532
Ceglar is offline Ceglar  Australia
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Originally Posted by iancanada View Post
Yes, that's no any problem. With FIFO, dual xo clock board and PCM board, 22.xxxMHz XO can handle 44.1, 88.2, 176.4KHz, while the 49.xxx MHz XO can handle 48, 96, 192 and 384KHz. It has already be confirmed by Combo384 USB.
Thanks for your reply, Ian - It answers my questions very well.

It seems then that 45.xxx + 49.xxx clocks should cover all bases, as Drew suggests below, without any penalty to 1541A operating with the PCM board.

Now, to wait patiently.. :-)

Regards,
Shane
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Old 17th September 2013, 08:34 PM   #533
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Hi Ian,

Got the converter board and did a quick test - it works nicely with AD1865 in both full-speed and half-speed modes!

The unfamiliar board among the pics is the music source Wandboard on top of an WD USB HDD. It will be stuffed into the DAC box as soon as I have time to do it.

Regards,
Zsolt
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Old 17th September 2013, 11:34 PM   #534
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Quote:
Originally Posted by vzs View Post
Hi Ian,

Got the converter board and did a quick test - it works nicely with AD1865 in both full-speed and half-speed modes!

The unfamiliar board among the pics is the music source Wandboard on top of an WD USB HDD. It will be stuffed into the DAC box as soon as I have time to do it.

Regards,
Zsolt
Thank you for your good news. Looks very nice. What is the maximum Fs your AD1865 is going?

I didn't see your AD1865 .

I think I'll buy a Wandboard board. I can source it from mouser in Canada.

Ian
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Last edited by iancanada; 17th September 2013 at 11:36 PM.
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Old 18th September 2013, 04:23 AM   #535
PET-240 is offline PET-240  Australia
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What OS are you running on the wandboard?
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Old 18th September 2013, 09:39 AM   #536
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What OS are you running on the wandboard?
Community Squeeze Operating System
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Old 18th September 2013, 09:49 AM   #537
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Originally Posted by iancanada View Post
Thank you for your good news. Looks very nice. What is the maximum Fs your AD1865 is going?

I didn't see your AD1865 .
Thanks! I'm hiding my AD1865

Forgot to mention... maximum Fs is 384KHz with full-speed mode.
Since it's overclocked with full-speed mode at 352.8|384KHz I'm using the half-speed setting - don't hear differences but will do some tests later on and maybe switch back to full-speed.

Zsolt
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Old 18th September 2013, 06:53 PM   #538
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Originally Posted by vzs View Post
Thanks! I'm hiding my AD1865

Forgot to mention... maximum Fs is 384KHz with full-speed mode.
Since it's overclocked with full-speed mode at 352.8|384KHz I'm using the half-speed setting - don't hear differences but will do some tests later on and maybe switch back to full-speed.

Zsolt
Good to know that. You confirmed AD1865, I confirmed PCM1704 and TAD1541A. It seems with this I2S to PCM board, all NOS DACs we tested can work up to 384KHz at NOS mode . That's really a good news.

Ian
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Old 18th September 2013, 10:45 PM   #539
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Originally Posted by vzs View Post
Thanks! I'm hiding my AD1865

Forgot to mention... maximum Fs is 384KHz with full-speed mode.
Since it's overclocked with full-speed mode at 352.8|384KHz I'm using the half-speed setting - don't hear differences but will do some tests later on and maybe switch back to full-speed.

Zsolt
Hi Zsolt,

I'm very interested in your AD1865 board. The concept is like a core board, with keeping anything else such as digital front end, IV, power supply external, the core board could become a standard part.

Each DAC can have its own core board to reduce the cost and complexity, for example AD1865 core board, TDA1541 core board and so on. With same size and same interface, they can share a same platform. Change DAC will be as easy as change a XO.

I like this idea .

Ian
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Old 18th September 2013, 11:11 PM   #540
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Would be awesome if you could make the core boards available, Ian
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