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03-24-2012, 02:20 PM
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#1
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Lifer
Join Date: Jul 2005
Location: Georgia
Posts: 29,743
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Toslink question. TTL from Coax + 3.3 or 5v = optical?
I'm looking at removing a coaxial connection from a boad and install a optical jack. From what I've read, coax is 2 connectors one being TTL the other is the ground. While an optical transmitter used not only the TTL and the ground but a VCc (3.3 - 5v) connection as well.
Questions:
Can I just take the TTL and ground from the coax and wire in power to a optical transmitter?
Can I split the TTL connection to be able to have both optical and coax?
Thanks,
Alfa
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03-24-2012, 03:14 PM
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#2
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Lifer
Join Date: Sep 2005
Location: North of Tonto, ON
Posts: 46,786
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03-24-2012, 03:54 PM
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#3
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Lifer
Join Date: Aug 2000
Location: North Hollywood, CA
Posts: 20,391
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03-24-2012, 04:04 PM
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#4
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Lifer
Join Date: Jul 2005
Location: Georgia
Posts: 29,743
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Quote:
Originally Posted by sdifox
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See that seems more like converting coaxial to optical. What make me believe my idea would work is that motherboards have SPDIF connectors on board:
Quote:
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pins 2(spdif out) & 3(ground) according to the manual. Pin 1 is vcc which is used for optical.
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Possibly? I might order a Gigabyte optical bracket to see what actually is going on.
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03-24-2012, 04:27 PM
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#5
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Lifer
Join Date: Sep 2005
Location: North of Tonto, ON
Posts: 46,786
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Quote:
Originally Posted by alfa147x
See that seems more like converting coaxial to optical. What make me believe my idea would work is that motherboards have SPDIF connectors on board:
Possibly? I might order a Gigabyte optical bracket to see what actually is going on.
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if your mb offers an optical bracket, why wouldn't you get that?
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03-24-2012, 05:46 PM
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#6
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Lifer
Join Date: Jul 2005
Location: Georgia
Posts: 29,743
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Quote:
Originally Posted by sdifox
if your mb offers an optical bracket, why wouldn't you get that?
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It's not for a motherboard. It from a DIY DAC that I had put together a while back. I'm trying to figure out how the mb works with optical vs coaxial that way I can apply it to my DAC. I ordered the bracket. We'll see if it has anything fancy ( I hope not)
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03-24-2012, 06:36 PM
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#7
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Lifer
Join Date: Sep 2005
Location: North of Tonto, ON
Posts: 46,786
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Quote:
Originally Posted by alfa147x
It's not for a motherboard. It from a DIY DAC that I had put together a while back. I'm trying to figure out how the mb works with optical vs coaxial that way I can apply it to my DAC. I ordered the bracket. We'll see if it has anything fancy ( I hope not)
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err no, it is probably exactly what I linked to 
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03-24-2012, 08:16 PM
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#8
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Lifer
Join Date: Jul 2005
Location: Georgia
Posts: 29,743
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Quote:
Originally Posted by sdifox
err no, it is probably exactly what I linked to |
I still can hope not!
This is what the bracket looks like
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03-25-2012, 08:29 AM
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#9
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Lifer
Join Date: Sep 2005
Location: North of Tonto, ON
Posts: 46,786
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Quote:
Originally Posted by alfa147x
I still can hope not!
This is what the bracket looks like
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good luck 
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