USB to I2S 384Khz - DSD Converter - Page 141 - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Vendor's Bazaar

Vendor's Bazaar Commercial Vendors large & small hawking their wares

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 28th March 2013, 01:29 PM   #1401
jcga is offline jcga  France
diyAudio Member
 
Join Date: Jun 2004
Location: Paris
Hi Domenico,
Received my 2 boards recently
Thanks
Jean Claude
  Reply With Quote
Old 28th March 2013, 04:04 PM   #1402
Marek is offline Marek  Poland
diyAudio Member
 
Join Date: Apr 2003
Location: Katowice
Quote:
Originally Posted by themystical View Post
The TPA firmware is only active at DAC power up after which it goes to "sleep" so shoudn't be interfering with the commands. The I2C bus will be powered by the 3.3V supply I assume. Not sure whether you can actually measure this on SCL with a multimeter, ideally you need a digital scope. What I meant originally was a simple continuity test with a multimeter on the wiring. SDA is pin 21 and SCL pin 22 on the Sabre chip if you wanted to test continuity right to the chip.
Edit-
Oops just noticed that you are using 0xA for your register, it should be 0x0A. That should sort it!!
In my 80MHz version of BII I2C is active all over the time - it sends some commands every 1s or less.
  Reply With Quote
Old 28th March 2013, 04:47 PM   #1403
wkw9811 is offline wkw9811  Hong Kong
diyAudio Member
 
Join Date: Dec 2005
Location: Hong Kong
Items received.
Thanks so much.
I want to know how to check firmware No. with my Mac.

Michael
  Reply With Quote
Old 28th March 2013, 04:53 PM   #1404
diyAudio Member
 
Join Date: Jun 2004
Location: Bath, UK
Quote:
Originally Posted by Marek View Post
In my 80MHz version of BII I2C is active all over the time - it sends some commands every 1s or less.
I can confirm this. I believe that TP have incorporated some code in the firmware that checks that the DAC hasn't reset - this will help avoid sudden jumps to full volume (when using the Volumite) for instance.
  Reply With Quote
Old 28th March 2013, 05:12 PM   #1405
wkw9811 is offline wkw9811  Hong Kong
diyAudio Member
 
Join Date: Dec 2005
Location: Hong Kong
Boards received

Thanks
  Reply With Quote
Old 28th March 2013, 05:17 PM   #1406
diyAudio Member
 
Join Date: Jan 2011
Location: Madrid - Spain
From B2 the user manual and integration guide:

Using external I2C controllers
The onboard firmware controller (10) is an I2C bus master. Since only one master is allowed on this bus, remove the controller when using an external controller on the I2C bus (Volumite for example).

What I don't know is if the Combo384 is included in the "external controller" category or not.
  Reply With Quote
Old 28th March 2013, 05:33 PM   #1407
diyAudio Member
 
Join Date: Feb 2006
Location: UK
Quote:
Originally Posted by Jackal29a View Post
From B2 the user manual and integration guide:

Using external I2C controllers
The onboard firmware controller (10) is an I2C bus master. Since only one master is allowed on this bus, remove the controller when using an external controller on the I2C bus (Volumite for example).

What I don't know is if the Combo384 is included in the "external controller" category or not.
It probably fits into that category as the Combo384 operates as a "master". Do you have Volumite or any other controllers in your system? There is an arbitration process for multimaster conflict in I2C communication as explained by Bunpei in one of the earlier posts.
  Reply With Quote
Old 28th March 2013, 08:14 PM   #1408
diyAudio Member
 
Join Date: Jan 2011
Location: Madrid - Spain
No Volumite nor any other master other than the firmware chip.

BTW, Amanero has told me there are 2 x 6.8K pull up resistors on the Combo384 right before the output pins so that part should be covered.

I'm going to try flashing 1069 with tool V.110 as per his intructions and see if it makes any difference.

Cheers
  Reply With Quote
Old 28th March 2013, 09:50 PM   #1409
glt is offline glt  United States
diyAudio Member
 
Join Date: Oct 2004
Should work with two masters talking to one server as long is the I2C is released after each use (which it should). You could try starting it without the on-board processor (certain things will be configured differently, but I2S or SDPFI should work) and try the mute/unmute...
__________________
www.hifiduino.wordpress.com
  Reply With Quote
Old 29th March 2013, 01:09 PM   #1410
axeexa is offline axeexa  Taiwan
diyAudio Member
 
Join Date: Jul 2011
Hi Domenico,
I change my mind to order only 1 pcs,sorry about change order,thank you.When GB5
reached the number of ,please sent me a paypal invoice.

Thank you
axeexa
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
HLLY USB SPDIF/ I2S CONVERTER kp93300 Digital Source 12 29th January 2012 02:55 PM
exaU2I - 32bit/384kHz Multi-Channel Asynchronous USB to I2S Interface exa065 exaDevices 0 11th November 2011 11:41 AM
$40 USB to I2S converter sharpi31 Digital Line Level 7 12th July 2009 04:09 PM


New To Site? Need Help?

All times are GMT. The time now is 08:01 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2