Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

USB to I2S : For Small Space .
USB to I2S : For Small Space .
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 21st June 2019, 09:18 AM   #31
test1 is offline test1
diyAudio Member
 
Join Date: Oct 2012
Quote:
Originally Posted by IVX View Post
test1, where you from?
I'm from France.
I can share some information if you need.
I've successfully make CM6631A/CM6632A (CMEDIA), SA9227 (Savitech) and TE8802L (Tenor) work with my own PCB.. and so far SA9227 seems the best.

By the way ,i've just seen there is a new IC SA9228 from Savitech on their roadmap..
  Reply With Quote
Old 21st June 2019, 01:20 PM   #32
miro1360 is offline miro1360  Europe
diyAudio Member
 
Join Date: Mar 2010
Quote:
Originally Posted by IVX View Post
miro1360, today is the modern trend to have wrong docs/code and all problems solving in tech support forums.
I went through all the answers, all the topics ended with a question:
"did it work for anyone?"
  Reply With Quote
Old 22nd June 2019, 03:51 AM   #33
IVX is offline IVX  Ukraine
diyAudio Member
 
IVX's Avatar
 
Join Date: Jul 2003
Location: south of China
test1, as I said I have Cmedia contact but only thru their distributor in SHZ. SA9227 is too expensive on taobao, even XU208 XMOS is cheaper, so I see no reason to try SA9227 yet. TE8802L no interest.
You know what, try to ask Cmedia about CM6645 IC, SHZ distributor says this IC isn't supported, and recommend me to use CM6642 instead(and I do). I suspect Cmedia got bad jitter performance with CM6645 because the IC has no any clock input, only USB(the same as PIC32). I'm fine with CM6642 but I have to use DAC with SPDIF builtin(ES9038Q2M).
__________________
Let's do smth nearly impossible!
E1.
  Reply With Quote
Old 22nd June 2019, 05:16 AM   #34
nofun is offline nofun  United States
diyAudio Member
 
nofun's Avatar
 
Join Date: Apr 2015
IVX it looks like the PIC might only be capable of generating its mclk by pll. The samd21 can operate as i2s slave so jitter could be much better. UAC1 should be possible with the sam but i doubt uac2 is. If there was some functional code around i think the pic or sam would make a fun diy platform despite the limited performance. I'll give the samd21 a try but I'm not expecting anything soon if ever.

That soundkey dac looks impressively cheap, from its measurements the tpa6130 and ceramic coupling caps at its inputs might limit the performance more than the pic. It also looks like the tps either shares the ldo with the dac or it just runs straight off the usb supply. I don't see any chokes either.
  Reply With Quote
Old 22nd June 2019, 06:47 PM   #35
IVX is offline IVX  Ukraine
diyAudio Member
 
IVX's Avatar
 
Join Date: Jul 2003
Location: south of China
To make BOM cheap and keep performance great is the kind of art but make cheap junk, not a big deal )) When I chose 2.5mm jack and saw gold-plated one for 5 cents, I didn't check how much nickel-plated one - no reason. How many units need to sell to get a serious profit from 5 vs 4 cents BOM difference? I think it is ridiculous, if not to say shameful economy ))
Attached Images
File Type: jpg WeChat Image_20190623024528.jpg (110.6 KB, 75 views)
__________________
Let's do smth nearly impossible!
E1.
  Reply With Quote

Reply


USB to I2S : For Small Space .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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Simplified B1 buffer to fit into small space Ian Greenhalgh Digital Line Level 2 15th October 2018 05:39 AM
Dual subs, small volume, big space, high WAF perceval Subwoofers 114 2nd August 2014 11:32 PM
Space - X a.wayne The Lounge 6 23rd April 2014 01:01 AM
DIY speaker for TA2020 t-amp in small space BGordon Full Range 30 26th May 2011 03:55 PM
Not enough space? WhtCastle Everything Else 7 28th November 2001 02:46 PM


New To Site? Need Help?

All times are GMT. The time now is 01:27 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki