4:1 or 4:2 mux....

[Zero Cool]

I'm not entirely sure that I understand options #1 and #2, so I'll just weigh in with the functionality that would make my life easier. Ideally, I'd like to have a single board that allows for up to four inputs (each of which can be SPDIF/PCM/DSD) and one output. Is that even possible? I would like my DAC to support both coax and Toslink SPDIF as well as two different USB modules (Amanero for now, and the TPA USB module when it becomes available).

Let me try and help.
4x SPDIF inputs use this board
S/PDIF 4:1 Receiver/MUX Module
you can use RCA or BNC or one input can be configured for XLR-AES input.

you would then need a switch board (mux) like this
OTTO-II 2:1 Switching Module

this would allow you to switch the output of the above CS8416 based SPDIF input board to a USB input board like this

The USB DAC/Receiver

Now if you wanted TWO USB boards. then things get tricky as you would need 2x of the OTTO-II boards configured in a tree to get 3 inputs. which makes a case for a 4:1 or 4:2 I2S switch board.


Zc

 

[RollE2k]

May i ask, when you decide which way to do this, and then when PCB's will be avalible?
Why i ask, is because this is the thing i wait for, before i'll order a complete dac-kit with everything.

 

[Russ White]

I have pretty well settled on approach #2

I think this fits the broadest use case.

This module will mainly be used to switch 4 channels of SPDIF into B3SE directly (since it has it's own level converter) - or - into B3 with the single SPDIF level converter in-between.

For switching PCM/DSD it would be very rare to need to switch more than 2 sources - so the OTTO-II is a perfect choice.

For B3SE you could easily wire both this new 4:1 module and the OTTO-II at the same time.

I plan on finishing up the layout this weekend, and ordering the first run then.

I will post the layout for you all to peruse.

Cheers!
Russ

 

[RollE2k]

Sounds great, looking forward to see how you have made the layout.

 

[RollE2k]

How did it go with this board Russ?

 

[gianmaria]

Dear Russ,
for the less expert I kindly ask you:
which will be the practical differences between this new board and the actual S/PDIF 4:1 MUX/Receiver with CS8416?

Will you just change the IC with a more perfomance one and redesign the board with new feauters?

I'm asking also because I just bought the S/PDIF 4:1 MUX/Receiver...

Thx in advance,
GM

 

[mavallarino]

Any chance to get mine working? I still haven't had any luck.

Inviato dal mio GT-I9000 con Tapatalk 2

 

[Russ White]

Dear Russ,
for the less expert I kindly ask you:
which will be the practical differences between this new board and the actual S/PDIF 4:1 MUX/Receiver with CS8416?

Will you just change the IC with a more perfomance one and redesign the board with new feauters?

I'm asking also because I just bought the S/PDIF 4:1 MUX/Receiver...

Thx in advance,
GM

The difference would be just that this module does no level conversion at all.

 

[mavallarino]

So I guess not?

Inviato dal mio GT-I9000 con Tapatalk 2

 

[BrianDonegan]

Any chance to get mine working? I still haven't had any luck.

What is it you are trying to get working?

 

[mavallarino]

4:1 receiver with the current source.
Power seems ok but the receiver can't lock the signal, not coax nor tos link

Pics were uploaded on your forum a couple of months ago.
Thanks!

Inviato dal mio GT-I9000 con Tapatalk 2

 

[mavallarino]

Hi Russ,
Have you had the chance to look over the photos?
Thanks

 

[Russ White]

Mavallarino this module (the subject of this thread) does not even exist for anyone other than me yet, so I am not sure what you want me to look at... Is it a SPDIF 4 (which is a quad level shifter)? If you have a thread on the support forum, just reply so it bubbles up to the top, and I will look at it for you.

Cheers!
Russ

 

[gianmaria]

Dear Russ,
is it kindly possible to know approximately when the the 4:1 Mux for Buffalo III SE will be ready?

Thanks a lot!

GM

 

[Russ White]

The design is finished and will be included in the next board order which will be in a week or two.

Cheers!
Russ

 

[RollE2k]

Russ: When will the boards be avalible? Have been waiting for these quite a while now

 

[mavallarino]

Hi Russ,
I sent in the photos using the feedback (AT) address.
Have you had the chance to look them over?

I can have the boards shipped to you if you are able to test them.
Please let me know.

Best

 

[gianmaria]

Dear Russ,
any update about availability?

Meanwhile: to switch between 4 spdif for the - BIII SE - do you reccommend to buy:

- the "old" MUX 4:1 CS8416 or
- the BIII 4-Channel S/PDIF Level Converter or

...better to wait this dedicated one when ready?

Thanks!
best regards,
GM

 

[BrianDonegan]

Dear Russ,
any update about availability?

Meanwhile to switch between 4 spdif to the - BIII SE - do you reccommend to buy:

- the "old" MUX 4:1 CS8416
- the 4-Channel S/PDIF Level Converter of the BIII?

...or... better to wait this dedicated one ready?

thx,
best regards,
GM

The "4-Channel S/PDIF Level Converter of the BIII" is not a switch. It simply converts four channels of consumer-level S/PDIF to TTL-level S/PDIF.

 

[Russ White]

I had to pull the original order (because of a design change), but I just ordered a batch of 4:1 mux boards. They will be here in a couple weeks.