DCAudioDIY.com

DC Area Audio DIYer's Community
It is currently March 28th, 2024, 5:47 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 16 posts ]  Go to page Previous  1, 2
Author Message
PostPosted: May 26th, 2016, 9:19 am 
Offline
User avatar

Joined: December 14th, 2013, 2:19 pm
Posts: 948
Sorry Roscoe, I was writing while you posted.

Took a look at the DF1704 datasheet. It couldn't be as simple as connecting pins 6 to 7 could it? XTI to XTO? In Lite's implementation, XTO has no connection.

Stuart


Top
 Profile  
 
PostPosted: May 26th, 2016, 9:26 am 
Offline
Site Admin
User avatar

Joined: February 28th, 2013, 10:38 am
Posts: 1682
Stuart Polansky wrote:
Took a look at the DF1704 datasheet. It couldn't be as simple as connecting pins 6 to 7 could it? XTI to XTO? In Lite's implementation, XTO has no connection.

Stuart


No. Pin 6 needs a genuinely external; clock source, pin 7 is used to provide clock to other devices when the DF1704 is running on it's own internal clock. Needing to keep the SP/DIF & AES/EBU inputs increases the complexity quite a bit....

Roscoe

_________________
I can explain it to you, but I can’t understand it for you.


Top
 Profile  
 
PostPosted: May 26th, 2016, 11:02 am 
Offline
User avatar

Joined: January 13th, 2016, 9:14 pm
Posts: 787
To get the I2S Bus working from the USB to I2S Bus board, you will need to disconnect the four lines going from the 8414 to the DF1704 filter and replace them with the ones from the board.

Usually they are:
SDATA
BCLK
LRCLK
MCK

And:
Ground

MCK becomes the XTI input on the filter chip.

You will have to verify with the datasheet of the DF1704 that the clocking from the I2S Bus input is compatible with the USB board that is chosen. Look at the clock frequencies for each sample rate and verify that they are compatible.

The DF1704 will not do DSD, so those outputs are left open on the USB board.

The names for the lines on the Amanero board I listed are very similar to the board's naming.

Hope that helps.


Top
 Profile  
 
PostPosted: May 26th, 2016, 3:49 pm 
Offline
User avatar

Joined: January 15th, 2015, 7:19 am
Posts: 1697
Location: Baltimore MD
I have been building/using Twisted Pear Audio Buffalo DAC for a few years now, upgrading as they bring out new DACs
I just ordered an Amanero board to add to my Bullalo SE
The also have isolation and reclocking boards too
http://www.twistedpearaudio.com/digital/amanero.aspx
I will let you know how it works. I am not doing the isolation or reclocking yet


Top
 Profile  
 
PostPosted: May 26th, 2016, 3:51 pm 
Offline
User avatar

Joined: January 13th, 2016, 9:14 pm
Posts: 787
The Amanero USB board sounds very good here with the TPA Opus DAC module. I ran the setup on batteries and sounded about the best of any DAC I had tried.

HiRez on a budget!


Top
 Profile  
 
PostPosted: May 28th, 2016, 7:10 am 
Offline
User avatar

Joined: January 15th, 2015, 7:19 am
Posts: 1697
Location: Baltimore MD
There is also an isolator chip ISO7640fm that is mentioned on the Amanero site cost about $7 from digikey and you can get a free board from diythk


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 16 posts ]  Go to page Previous  1, 2

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: Google [Bot] and 32 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group