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Old 28th December 2016, 02:25 PM   #2471
SAC is offline SAC  United Kingdom
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Default Amanero now working..

...now works on millionth time of trying!
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Old 28th February 2017, 07:45 AM   #2472
nautibuoy is offline nautibuoy  United Kingdom
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Hi Acko. I have a spare SO3 (with 90/98MHz NKD oscillators) and I've acquired an Amanero board so I thought I would partner them up for another NoDac project using the Amanero DSD-only firmware. The aim is to run at DSD512 if possible.

I've not used an Amanero board with your SO3 before so can I shortcut searching through the thread with a couple of questions. I'm assuming oscillator speed should be higher than the data rate (DSD512 @ 22/24MHz)?

Clock divider on SO3 is currently /4 - can I/should I change to /2? Not sure if Amanero can accept a 45/49MHz clock input.

Assuming it will work at 45/49, what value/type of resistor should I use for the /2 clock divider?

Cheers

Ray
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Old 28th February 2017, 02:51 PM   #2473
stijn001 is offline stijn001  Netherlands
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Amanero Isolator/Reclocker GB
Haha.., "snap"! Just the question I needed answer to as well, I was hoping to use a set of 45/49MHz clocks, for Amanero DSD playback (?). :-)
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Old 28th February 2017, 08:14 PM   #2474
acko is offline acko  Australia
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Quote:
Originally Posted by nautibuoy View Post
Hi Acko. I have a spare SO3 (with 90/98MHz NKD oscillators) and I've acquired an Amanero board so I thought I would partner them up for another NoDac project using the Amanero DSD-only firmware. The aim is to run at DSD512 if possible.

I've not used an Amanero board with your SO3 before so can I shortcut searching through the thread with a couple of questions. I'm assuming oscillator speed should be higher than the data rate (DSD512 @ 22/24MHz)?

Clock divider on SO3 is currently /4 - can I/should I change to /2? Not sure if Amanero can accept a 45/49MHz clock input.

Assuming it will work at 45/49, what value/type of resistor should I use for the /2 clock divider?

Cheers

Ray
Hi Ray,

Your S03 board with 100M clocks can reclock up to DSD1024 so no problems with DSD512
Just use it as it is (/4) with Amanero with prescaler 1:1
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Old 28th February 2017, 08:39 PM   #2475
acko is offline acko  Australia
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Quote:
Originally Posted by stijn001 View Post
Haha.., "snap"! Just the question I needed answer to as well, I was hoping to use a set of 45/49MHz clocks, for Amanero DSD playback (?). :-)
Just set to /2 (22r resistor) on the S03 and Amanero prescaler MCK/1. With 45/49M clocks you will get up to DSD512 and PCM 384KHz
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Old 1st March 2017, 05:43 AM   #2476
nautibuoy is offline nautibuoy  United Kingdom
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Cheers Acko, appreciated.

Ray
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Old 1st March 2017, 08:52 AM   #2477
stijn001 is offline stijn001  Netherlands
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Great, thanks guys!
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Old 5th April 2018, 02:34 AM   #2478
Mull3t is offline Mull3t  United States
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Hello...

I'm coming really late to the party here. Bought a bunch of this stuff during earlier group buys, but had other projects that took a priority over this one.

So this is what I'm trying to do...

I have an Amanero, BBB (Volumio) with i2s only cape, Twisted Pear OTTOII 2:1 mux, and Acko's S03.

This is my plan...
I want synchronous clocking with both sources so I'm going to use the OTTOII 2:1 mux as an i2s switch. LRCK, BCK, and SDATA go thru the OTTO. MCK goes from both it's respective positions (pins and uFL) on the S03 to both the i2s cape and back to the Amanero. Theoretically, it looks like this would work, but not sure. 3v3 to the S03 will be set up on a switch to switch between both sources pwr to the S03 - Does this even matter? CKSEL will also be on a switch to switch between sources. I know this is low tech, but it seems it's the only way to make it work without the S05-S07. What do you guys think? Will my idea work?

Here is a pic of of what I'm trying to do...
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Also is it 100% necessary to cut the trace on the S03 next to R3? I'm not populating R4.

Thanks,
Mull3t
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Old 5th April 2018, 10:26 AM   #2479
acko is offline acko  Australia
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Yes, this will work but let BBB power the input of S03. Discard the Amanero 3v3 power and the DPST switch. So source select by means of your CKSEL switch and OTTO switch in tandem
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Last edited by acko; 5th April 2018 at 10:30 AM.
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Old 5th April 2018, 04:30 PM   #2480
Mull3t is offline Mull3t  United States
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Acko,

So I'll take that as I don't need to cut the trace next to R3 if I'm not using R4?

That's good to know that this should work. The Amanero portion most likely won't include UFL coax, so I'm going to try and have that source very close to the OTTO board. Unless I can find some sort of Amanero to UFL adapter board of course. I feel like I've seen one in the past either in this thread or elsewhere on diyaudio.
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