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Old 08-08-2008, 05:26 PM   #1
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Default How to Use The SPDIF Connector Available on GeForce Video Cards

There has been a new article posted.

Title: How to Use The SPDIF Connector Available on GeForce Video Cards
URL: http://www.hardwaresecrets.com/article/600

Here is a snippet:
"Some video cards based on graphics chips from nVidia have an SPDIF input connector. In this tutorial we will teach you when this connector should be used and how to use it.This small connector present..."

Comments on this article are welcome.

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Old 10-30-2008, 08:58 AM   #2
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Default How is Audio Being sent out of the DVI port?

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Originally Posted by Hardware Secrets Team View Post
There has been a new article posted.

Title: How to Use The SPDIF Connector Available on GeForce Video Cards
URL: http://www.hardwaresecrets.com/article/600

Here is a snippet:
"Some video cards based on graphics chips from nVidia have an SPDIF input connector. In this tutorial we will teach you when this connector should be used and how to use it.This small connector present..."

Comments on this article are welcome.

Best regards,
Hardware Secrets Team
http://www.hardwaresecrets.com
Nice article describing the different setup scenarios and options for HTPC users.

However, there is a key question that has not been answered. That is, how is Nvidia sending audio out of the DVI port of its graphics card to the DVI-HDMI adapter? The DVI specification does not allocate any pins on the DVI connector for audio, yet, if we use the DVI-HDMI adapter that Nvidia provides, we get audio via hdmi. Obviously this adapter cannot pull audio out of thin air.. It has to be using the audio it is receiving from the DVI input side...

Now, ATI addressed this problem using a propreitary DVI to HDMI adapter that uses unused pins in the DVI connector to transfer audio.. This is strictly an ATI specific solution and their solution supports HD audio formats including 8 channel LPCM..

Nvidias goal with its DVI to HDMI adapter is less ambitious..all they need to do is pass through Dolby Digital and DTS. Even so, how is Nvidia doing this using its DVI port? Are they using a propreitary DVI to HDMI adapter (like ATI did)? or has Nvidia managed to weave audio information into the video signal somehow? If its the latter case then any generic DVI-I to HDMI adapter should be able to transmit audio. If its the former case then unless we use an Nvidia specific DVI to HDMI adapter audio will be absent in the hdmi output...
Any information you guys can shed on this will be useful...
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Old 06-09-2010, 08:35 AM   #3
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I would also like to know the same thing as what the above poster mentioned. Also where can one get one of those cables from?
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Old 06-29-2011, 09:02 PM   #4
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Thumbs up Thanks bro.

You'd think that PNY would include some hint about what that cable was for and how/where to connect the damned thing, but no, not even a hint.

Thank you for explaining it. Learn something new every day.
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Old 06-30-2011, 10:07 AM   #5
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You are quite welcome!
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Old 08-03-2012, 01:08 AM   #6
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I hooked up the cable connections.
The decoded (Dolby Digital and DTS) sound works only in certain movies and in other it doesn't work.
I am using Media Player Classic - Home Cinema, build number: 1.6.2.4902
also using AC3 Filter ver: 2.5b.
Motherboard: Asus p5ql-e, Graphic Card: Zotac Nvidia Geforce 9600 GT.

Everything works perfect using direct optic cable from the board to my receiver but when I use this connection (the sound goes through the HDMI to the TV, and from the tv optic out to the receiver) the above happens. The TV has no problem to pass-through decoded sound because I am also using Playstation 3 on it and no problem and also as described above, it works on certain movies.

I figure it is a software problem of some sort which I know nothing about.
Can anyone help?
Thanks
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Old 08-06-2012, 07:58 AM   #7
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As far as I can tell, this issue is not related to the connection explained on this tutorial, but a software issue.
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Old 08-06-2012, 10:53 AM   #8
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Red face A software issue

hi

thanks for replying.
like I figured, it is a software issue.

can you help?
if not, who should I contact?

thanks again
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Old 08-07-2012, 05:00 AM   #9
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It is probably a drivers issue. I'd try installing the latest versions of the motherboard audio drivers and video card drivers. If that doesn't fix the problem, I'd try contacting ASUS and ZOTAC support department.
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