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Old 5th February 2013, 09:05 AM   #1231
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Sidecar as described on the buffalo III manual
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Old 5th February 2013, 09:57 AM   #1232
ENSen is offline ENSen  Sweden
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Originally Posted by luisbock View Post
Sidecar as described on the buffalo III manual
No, I was wondering if anyone had succeeded to connect both I2S and SPDIF without sidecar.
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Old 5th February 2013, 11:03 AM   #1233
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You need the sidecar and (unless your s/pdif sources are TTL-level already) the 4-channel level converter.
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Old 5th February 2013, 11:38 AM   #1234
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Originally Posted by BrianDonegan View Post
You need the sidecar and (unless your s/pdif sources are TTL-level already) the 4-channel level converter.
Hi Brian,

I have the level converter and I control the BIII with an arduino running a modified version of hifiduino. I have three SPDIF sources connected to data 6-8 which are not used for I2S and i2s to the clock input and data 1-2. If I set input type to i2s it works. If I set input type to SPDIF and select SPDIF input as data 6 does it matter that I have an i2s source at pins data1-2 and clock? I know that I have read somewhere that it should work but now I can not find it again.

Sorry to go on about this but I really want to make sure my way can not work and, if so, why it will not work. One of the reasons being there is no room for a sidecar in my chassis without moving things around which I want to avoid if possible.
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Old 5th February 2013, 12:02 PM   #1235
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I far as I know it won't work unless you switch out the bit clock of your PCM/DSD source.

The reason is the DAC will always try to detect the bit clock.

That's why there is sidecar.
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Old 5th February 2013, 12:06 PM   #1236
ENSen is offline ENSen  Sweden
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Originally Posted by Russ White View Post
I far as I know it won't work unless you switch out the bit clock of your PCM/DSD source.

The reason is the DAC will always try to detect the bit clock.

That's why there is sidecar.
Thanks for the explanation Russ.
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Old 5th February 2013, 12:21 PM   #1237
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Sidecar also joins the DAC input channels for I2S, taking the place of the jumpers under the board, that you do not want installed for s/pdif.
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Old 5th February 2013, 02:33 PM   #1238
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Quote:
Originally Posted by Russ White View Post
I far as I know it won't work unless you switch out the bit clock of your PCM/DSD source.

The reason is the DAC will always try to detect the bit clock.

That's why there is sidecar.
Here is a link proposing a way to do that. I am not sure if this person had actually done this. Could this work with the arduino controller Russ?

Buffalo III “Smart” Stereo Input Configuration H i F i D U I N O


Sorry, please disregard. I just noticed your comments on this linked page

Last edited by pixelpusher; 5th February 2013 at 02:41 PM. Reason: Further reading
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Old 5th February 2013, 02:51 PM   #1239
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I am pretty sure that link is what the original question was referring too.

I think at one point I thought it *may* work. (nothing lost in trying it)

But, in short the datasheet indicates not to do it.
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Old 5th February 2013, 04:39 PM   #1240
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Quote:
Originally Posted by ENSen View Post
Hi Brian,

I have the level converter and I control the BIII with an arduino running a modified version of hifiduino. I have three SPDIF sources connected to data 6-8 which are not used for I2S and i2s to the clock input and data 1-2. If I set input type to i2s it works. If I set input type to SPDIF and select SPDIF input as data 6 does it matter that I have an i2s source at pins data1-2 and clock? I know that I have read somewhere that it should work but now I can not find it again.

Sorry to go on about this but I really want to make sure my way can not work and, if so, why it will not work. One of the reasons being there is no room for a sidecar in my chassis without moving things around which I want to avoid if possible.
Hi, I was the one that proposed such a wiring configuration and admit that I have not tested it. However, I did an experiment with the BII and was able to switch between I2S and SPDif by switching DATA 1 only. The bit-clock on the bitclock pin was live at all times.

You can try turning off the I2S source (that would shut down all the I2S signals) and switch to spdif...

As Russ said, there is no harm in trying... :-)
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