Rank: Member
Groups: Member
Joined: 10/4/2016(UTC) Posts: 3  Location: Bombay Thanks: 2 times
|
Can you please explain the difference?
It's obvious that the circuits are quite different. But for just selecting an input and receiving the signal, to feed into a DAC, what are the differences between the two? I found another thread which had asked the same question but had received no answers.
|
|
|
|
|
|
Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA
Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
|
The 4:1 Mux/Demux is a simple 4-channel switch. Think of it as a digital 4-position rotary switch. It does not alter the digital signals passed through it at all. It can be wired to either send a single input to one of four outputs, or to select one of four inputs to a single output.
Typical use case is selecting one of four S/PDIF inputs to be fed into a single S/PDIF receiver, such as a Buffalo-IIIse. You could also use four in parallel to provide four I2S inputs for a DAC with I2S inputs (all of our DACs). It is a versatile board.
The S/PDIF 4:1 MUX/Receiver, on the other hand, is an S/PDIF receiver that accepts up to four S/PDIF inputs, and outputs decoded I2S of the selected input. One of the inputs can be configured as S/PDIF or AES/EBU. It can also, optionally, output the selected S/PDIF input as a passthrough.
It is typically used with I2S-only DACs, like the Opus and COD, to provide multiple S/PDIF inputs. (You could also use the 4:1 MUX/DEMUX board with the WM8804 Receiver.)
I hope this answers your question.
|
 1 user thanked Brian Donegan for this useful post.
|
|
|
|
Rank: Member
Groups: Member
Joined: 10/4/2016(UTC) Posts: 3 Location: Bombay Thanks: 2 times
|
Originally Posted by: Brian Donegan  The 4:1 Mux/Demux is a simple 4-channel switch. Think of it as a digital 4-position rotary switch. It does not alter the digital signals passed through it at all. It can be wired to either send a single input to one of four outputs, or to select one of four inputs to a single output. This is very clear, thanks. I guess this means that the 4:1 Mux/Demux switch does not have active components in the signal path? Just trying to verify whether I've understood you right. I don't see how it can be bi-directional if there are gates etc in the signal path...
|
|
|
|
|
|
Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN
Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
|
It has a semi active component :) The mux is basically an electronic switch. It is not manipulating the signal - but does switch it. It is indeed bidirectional. It works like any FET switch.
|
1 user thanked Russ White for this useful post.
|
|
|
|
Rank: Member
Groups: Member
Joined: 10/4/2016(UTC) Posts: 3 Location: Bombay Thanks: 2 times
|
Originally Posted by: Russ White It has a semi active component :) The mux is basically an electronic switch. It is not manipulating the signal - but does switch it. It is indeed bidirectional. It works like any FET switch. Understood. Silly of me to have forgotten FET switches. Thanks a lot.
|
|
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
