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Introducing the Buffalo III-SE-Pro 9028/9038

No - it does not bypass it. :) It's just that the ASRC (via the DPLL) and the the input stream are now exactly in sync - meaning it is not really ASRC any more it is (no A for async any more) SRC :) Yes - in this case the DPLL BW is not very important - so you might as well leave it wide open. In the ES9018 you actually had to do this is some cases - because of the lock speed issue in the old DPLL. As far as I have seen the new DPLL does not have this flaw.
 
Can you use a microcontroller to do the switching between SPDIF and Serial(PCM/DSD)? Just like the OttoII?

Alex

Yes - and that's exactly what the on-board controller/firmware does. :) There is no external switching done at all. The DIP switch just lets the firware know which source you want it to select - you can use an external switch instead (via EXT_IO - keep the input select DIP switch open if you do that) or you can have your own controller do the same thing (just remeber to remove the on-board controller if you use your own external controller/firmware)
 
Yes - and that's exactly what the on-board controller/firmware does. :) There is no external switching done at all. The DIP switch just lets the firware know which source you want it to select - you can use an external switch instead (via EXT_IO - keep the input select DIP switch open if you do that) or you can have your own controller do the same thing (just remeber to remove the on-board controller if you use your own external controller/firmware)

I think I am getting confused here, sorry. My understanding is that on the EXT_IO, if I gnd pin 5 (A0), I get SPDIF as my source or DSD if not grounded. Am I correct? I dont get it when you said "No External Switching done at all"? I thought you do this switching to select your source? SPDIF or DSD? Clarification please..

Alex
 
I mean that no signal goes through a switch :)

The only role of the switch is to tell the controller what to tell the DAC to select :)

Ok, I got it, so my question is, using the EXT_IO, instead of manually using a switch to ground A0, how do I do this using a controller? do I just connect A0 to the controller to switch high or low?

Alex
 
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Ok, I got it, so my question is, using the EXT_IO, instead of manually using a switch to ground A0, how do I do this using a controller? do I just connect A0 to the controller to switch high or low?

Alex

Yep - just make sure you you drive it high you do so at 3.3V - not more. The safest approach is an open drain to type output that will only pull low (letting the weak pull-ups keep the net high when not pulled low by your controller)