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Old 29th September 2012, 12:08 PM   #31
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"S" stands for switch.

It takes LVTTL input. It does not matter where it comes from. That is your choice.

I would have answered sooner, but I did not got a post notification for some reason...
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Old 29th September 2012, 12:51 PM   #32
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Quote:
Originally Posted by Russ White View Post
"S" stands for switch.

It takes LVTTL input. It does not matter where it comes from. That is your choice.

I would have answered sooner, but I did not got a post notification for some reason...
Thanks Russ, that's great, as mentioned earlier, I have a 'spare' way on my 4:1 mux. I was intending on routing this vdd from the mux via the switch to the 's' pad. Would it need to go via a resistor? Presumably I don't need to tie the gdn from the mux over to the otto as well?

I like the way this forum sends you a notification when someone answers. PFM uses the same software but I don't get notifications from there

Thanks for helping out.

Stefan
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Old 30th September 2012, 12:46 AM   #33
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You always need to make sure two circuits that share logic are at the same ground potential. The means connecting GND. Unless you use some sort of isolation.

I would keep the S input at 3.3V max.
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Old 30th September 2012, 12:46 AM   #34
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You always need to make sure two circuits that share logic are at the same ground potential. The means connecting GND. Unless you use some sort of isolation.

I would keep the S input at 3.3V max.
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Old 30th September 2012, 08:11 AM   #35
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Great, i think these two circuits will share a transformer, so gdn will be connected. What is the current draw of the switch so that i can calculate the value of pull down resistor? I presume the switch vdd from the mux has the same voltage as the psu feeding it?

Thanks Russ, good work.

Stefan
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Old 30th September 2012, 12:34 PM   #36
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It is a logic input, high impedance. You would need a voltage divider or level shifter if your starting voltage is > 3v3V. Say 5V.
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Old 16th October 2012, 07:11 AM   #37
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Hi,
does OTTO will switch with no problem when both of source have different audio format output? (source A format 16 bit/44.1kHz while B format 24 bit/96kHz)
And will that kind of config will make problem when to be used with Metronome?

thanks
Nicko
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Old 17th October 2012, 10:56 PM   #38
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It does easily pass two different input signals.

The second part of your question is less straightforward. It will depend on unknown parameters.
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Old 18th October 2012, 03:09 AM   #39
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Thanks for the answer, from what i experienced when used that config with Metronome before Opus made problem for source with 44.1 kHz format, the sound sometimes not came through or the sound skip a lot.
But when direct from OTTO to Opus the sound came out normally.

thanks
Nicko
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Old 26th October 2012, 05:47 PM   #40
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Any issues with chaining OTTO's? I have a USB to i2s converter, the MUX, and the DSD output from my SACD player via Teleporter to input to my Buffalo II. I thought I could use one OTTO to switch between the MUX and the SACD and output to another OTTO to switch between OTTO #1 and the USB to i2s converter. Would this cause any problems?

Stated more simply, three i2s sources(1, 2, 3), two OTTOS(A, B).
1 & 2 switched with OTTO A.
3 and OTTO A switched with OTTO B connected to the Buffalo II.

I could keep all the wires very short, stacking the OTTOS.

Thank you for your time and help.

-Aaron.
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