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Old 9th October 2012, 07:23 PM   #41
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Originally Posted by glt View Post
Brian,

What are Ic4, Ic5?
IC4-IC6 are analog switches for switching between S/PDIF and PCM/DSD.
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Old 9th October 2012, 07:48 PM   #42
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Originally Posted by RollE2k View Post
Brian: The switching, will it be simlar to the 4-spdif board that you short to pads of the IP_S, and if "programmed" with external controller, what kind of command would you need to send to "switch", just a 5v(to two bits in different orders?)
You set one of the pins to logic low (gnd).
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Old 9th October 2012, 11:38 PM   #43
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Actually You would simply either not install the clock trident, or switch out power from it. There is no ferrite in front of the tridents any more.

My solution if you think you will ever switch between Asynch and Synch is to use a socket for the clock Trident. Or power that trident separately from a switch (by not connecting the input pin to the Buffalo)

Most people will simply pick one and run with it.
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Old 10th October 2012, 06:14 AM   #44
roender is offline roender  Romania
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I don't believe that's a good solution, to leave the output of XO connected on the clock line, even with the supply power off. The XO's output is not designed for tristate operation and is not high impedance.
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Old 10th October 2012, 11:17 AM   #45
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Actually, it is high impedance. It works very well (tested).
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Old 10th October 2012, 11:53 AM   #46
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Originally Posted by roender View Post
I don't believe that's a good solution, to leave the output of XO connected on the clock line, even with the supply power off. The XO's output is not designed for tristate operation and is not high impedance.
Sorry but you are incorrect.

As Brian says, when the clock is not powered it's output is in a high impedance state. I consulted Crystek and tested it myself to be certain.

BTW, people have been doing this with BII and BIII for years.
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Last edited by Russ White; 10th October 2012 at 11:58 AM.
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Old 11th October 2012, 05:55 PM   #47
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HI, Roender, maybe a different approach other than endlessly questioning the efforts of the designers of the Buffalo DAC would be to apply your understanding to the creation of your own design and demonstrate the effectiveness of your ideas. This would certainly benefit the entire DIY community in many ways, both by providing us options and by ending this banter. In the mean time, Russ, how can I order this DAC? I would love to place my order today. I checked your website but dont see it listed
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Old 12th October 2012, 11:49 AM   #48
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They will go on sale in the next week or two. I will be creating a separate web page for the se version shortly.
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Old 12th October 2012, 01:22 PM   #49
roender is offline roender  Romania
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Originally Posted by GT87928 View Post
HI, Roender, maybe a different approach other than endlessly questioning the efforts of the designers of the Buffalo DAC would be to apply your understanding to the creation of your own design and demonstrate the effectiveness of your ideas. This would certainly benefit the entire DIY community in many ways, both by providing us options and by ending this banter. In the mean time, Russ, how can I order this DAC? I would love to place my order today. I checked your website but dont see it listed
GT87928, calm down, please :-)
I have nothing against BIII DAC as it is now implemented, nor his designers ... just rising some legitimate technical questions.
Regarding my contribution, search yourself trough the forum ...
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Old 12th October 2012, 05:46 PM   #50
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GT87928, calm down, please :-)
I have nothing against BIII DAC as it is now implemented, nor his designers ... just rising some legitimate technical questions.
Regarding my contribution, search yourself trough the forum ...
It's all good. These are the same questions we asked ourselves during the discovery/design phases.
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