Need help with my front panel audio device
Bookmark this page:
 Yahoo!
 Google
 Windows Live
 del.icio.us
 digg
 Netscape
|
|
|||||||||||||
|
Posted by Benjamin Ransum on July 16, 2006, 12:32 am
Please log in for more thread options My new computer case that I used to built my new computer has a front panel audio device. The wires are all labeled at the connection things that attach to the motherboard. My motherboard has a wire diagram, but I'm confused about one thing. On the front panel audio device there two EAR R and two EAR L connections. Does anyone know which EAR is out and which EAR is return? The case is an Ultra Aluminus and the motherboard is an Intel D975XBX. I called Ultra and they were no help. My mother board front panel audio header layout: Port1L (1) (2) GND Port1R (3) (4) Presence# Port2R (5) (6) Sense1_Ret Sense_Send (7) ( ) Key (no pin) Port2L (9) (10) Sense2_Ret From Intel's web site I was able to find out that Port1L is Mic, GND is GND, Port1R is Mic Power, Port2R is EAR R, Port2L is EAR L, Sense1_Ret is EAR R return, Sense2_Ret is EAR L return. I hope this stays together as I have typed it out on my computer. Please tell me which wire on the front panel audio device goes where on my mother board. The wires on the front panel audio device are labeled "Mic In" (Red), "GND" (Black), "Ear L" (Orange), "Ear R" (Green), "Ear R" (Brown), "Ear L" (Black), "Mic Power" (Yellow). Hope someone can help. Sincerely, Injam | |||||||||||||
|
Posted by Grinder on July 16, 2006, 1:19 am
Please log in for more thread options Does this thread on their forums help? http://ultraproducts.com/forums/showthread.php?t=1812 | |||||||||||||
|
Posted by Paul on July 16, 2006, 4:45 am
Please log in for more thread options
> Hello,
> My new computer case that I used to built my new computer has a front > panel audio device. The wires are all labeled at the connection things > that attach to the motherboard. My motherboard has a wire diagram, but > I'm confused about one thing. On the front panel audio device there > two EAR R and two EAR L connections. > Does anyone know which EAR is out and which EAR is return? > > The case is an Ultra Aluminus and the motherboard is an Intel D975XBX. > I called Ultra and they were no help. > > My mother board front panel audio header layout: > Port1L (1) (2) GND > Port1R (3) (4) Presence# > Port2R (5) (6) Sense1_Ret > Sense_Send (7) ( ) Key (no pin) > Port2L (9) (10) Sense2_Ret > From Intel's web site I was able to find out that Port1L is Mic, GND > is GND, Port1R is Mic Power, Port2R is EAR R, Port2L is EAR L, > Sense1_Ret is EAR R return, Sense2_Ret is EAR L return. > > I hope this stays together as I have typed it out on my computer. > Please tell me which wire on the front panel audio device goes where > on my mother board. > The wires on the front panel audio device are labeled "Mic In" (Red), > "GND" (Black), "Ear L" (Orange), "Ear R" (Green), "Ear R" (Brown), > "Ear L" (Black), "Mic Power" (Yellow). > > Hope someone can help. > > Sincerely, > Injam The pin names on your motherboard header, are HDAudio names. The names on your front panel wiring are AC'97 names. The two standards aren't exactly the same, so there may be a resultant lack of functionality. A document showing both types, is here. The formfactors site contains Intel documents for various standardization efforts, like power supplies and the like. See section 2.3.5, Pg 22. http://www.formfactors.org/developer\specs\A2928604-005.pdf Port1L and Port1R are for the microphone jack. The bias resistors are set up for a stereo electret microphone, and I assume a mono would work as well. Port2 is for headphones. The three sense pins, are for isolated contact pairs on the microphone and headphone jacks. Now, they would be missing on an AC'97 computer case, such as yours. In order for an audio codec to detect that a jack is plugged, the codec would need an internal impedance sensing function. There is no need for the loopback of the headphone signals, because AFAIK, HDaudio uses separate output ports for the green Lineout on the back of the computer, and for the Port2 headphones. The software is in control of whether those two outputs are enabled simultaneously or not. If jack sensing was working properly, for example, the HDaudio driver could mute the rear speaker output, when it detects that headphones have been plugged into Port2L/Port2R. Port1L (1) (2) GND Port1R (3) (4) Presence# Port2R (5) (6) Sense1_Ret Sense_Send (7) Port2L (9) (10) Sense2_Ret The Intel BadAxe manual says a Sigmatel 9221 or a 9220 is the codec. And there is no datasheet available on this page. http://www.sigmatel.com/products/pcaudio/desktop/stac9220.asp How the jack sensing works, is shown on page 172 here. This diagram is not completely consistent with the other Intel document, as I think the position of the switch and resistor have to be reversed. In other words, the isolated contact pair on a jack, are not ground referenced. The resistors connect to ground. ftp://download.intel.com/standards/hdaudio/pdf/HDAudio_03.pdf In that diagram on page 172, since your Sense_Send, Sense1_Ret and Sense2_Ret do not have wires coming from the front audio, they will not be connected. The only consequence, is that the codec won't be able to detect that the plugs are occupied, using the resistors. The codec will have to periodically poll the jacks, and attempt to sense their impedance on tip and ring. It is difficult for me to guess as to whether that is going to be what happens or not. Either the above wiring will work, or the audio codec may not know that anything has been plugged in. You'll have to experiment and see what happens. On an Asus motherboard, there is a BIOS option to put the header in a pseudo AC'97 mode or in HDaudio mode. You are in need of that pseudo AC'97 mode, but maybe the Intel BIOS doesn't have that. Anyway, after that excessively long preamble, here is your wiring: Mic <--------> Port1L (1) (2) GND <------------> GND
Sense_Send (7)
Mic_Power <--> Port1R (3) (4) Presence# Ear_R <------> Port2R (5) (6) Sense1_Ret Ear_L <------> Port2L (9) (10) Sense2_Ret
* Second Ear_L and Ear_R are not used. The formfactor document (the first link) states that Presence# should be connected to ground through a 1000 ohm resistor. If no connection is made to the pin, as I show in the above figure, then the BIOS will not know you have wired stuff to the front panel. I don't understand why they don't just let it be connected to ground. So, try the above connection diagram first. See whether the BIOS knows or cares about the 2x5 audio header or not. If the BIOS does care in some way, then you'll need a way to ground Presence like this. Chances are, connecting it directly to GND would also work. (Why the docs say to use a 1000 ohm resistor, boggles the mind. If it is a logic input, it should be able to go right to GND.) (4) Presence# -----1000ohm_resistor-----GND Report back how it works out, for the benefit of any other BadAxe owners who are thinking about trying it. Also, since the D3611001 user manual doesn't describe all the BIOS functions, I'd be curious as to what settings are available, with respect to that audio header. Paul | |||||||||||||
|
Posted by Injam on July 16, 2006, 2:40 pm
Please log in for more thread options Here is what I did:
Red Mic (1)(2)GND Black Yellow Mic Pwr (3)(4) Empty Green Ear R (5)(6) Ear R return Brown Empty (7)( ) No Pin Orange Ear L (9) (10) Ear L return Black I found a web site (http://www.frontx.com/cpx110.html) that had a diagram of their plug. My front panel audio device has individual plugs for each wire. The Mic works and the headphones work, but the main speakers will not cut off when the headphones are plugged in. At first I tried this: Red Mic (1)(2)GND Black Yellow Mic Pwr (3)(4) Empty Brown Ear R (5)(6) Ear R return Green Empty (7)( ) No Pin Black Ear L (9) (10) Ear L return Orange The Mic worked, but the headphones would not work unless the jack was pulled part way out. The main speakers still would not cut off. Thanks to all who responded. If y'all can think of something else to try let me know. Sincerely, Injam (AKA Benjamn Ransum) Benjamin Ransum wrote: > Hello,
> My new computer case that I used to built my new computer has a front > panel audio device. The wires are all labeled at the connection things > that attach to the motherboard. My motherboard has a wire diagram, but > I'm confused about one thing. On the front panel audio device there > two EAR R and two EAR L connections. > Does anyone know which EAR is out and which EAR is return? > > The case is an Ultra Aluminus and the motherboard is an Intel D975XBX. > I called Ultra and they were no help. > > My mother board front panel audio header layout: > Port1L (1) (2) GND > Port1R (3) (4) Presence# > Port2R (5) (6) Sense1_Ret > Sense_Send (7) ( ) Key (no pin) > Port2L (9) (10) Sense2_Ret > From Intel's web site I was able to find out that Port1L is Mic, GND > is GND, Port1R is Mic Power, Port2R is EAR R, Port2L is EAR L, > Sense1_Ret is EAR R return, Sense2_Ret is EAR L return. > > I hope this stays together as I have typed it out on my computer. > Please tell me which wire on the front panel audio device goes where > on my mother board. > The wires on the front panel audio device are labeled "Mic In" (Red), > "GND" (Black), "Ear L" (Orange), "Ear R" (Green), "Ear R" (Brown), > "Ear L" (Black), "Mic Power" (Yellow). > > Hope someone can help. > > Sincerely, > Injam | |||||||||||||
|
Posted by Paul on July 17, 2006, 9:12 am
Please log in for more thread options
> Here is what I did:
> Red Mic (1)(2)GND Black > Yellow Mic Pwr (3)(4) Empty > Green Ear R (5)(6) Ear R return Brown > Empty (7)( ) No Pin > Orange Ear L (9) (10) Ear L return Black > I found a web site (http://www.frontx.com/cpx110.html) that had a > diagram of their plug. My front panel audio device has individual plugs > for each wire. > The Mic works and the headphones work, but the main speakers will not > cut off when the headphones are plugged in. > At first I tried this: > Red Mic (1)(2)GND Black > Yellow Mic Pwr (3)(4) Empty > Brown Ear R (5)(6) Ear R return Green > Empty (7)( ) No Pin > Black Ear L (9) (10) Ear L return Orange > The Mic worked, but the headphones would not work unless the jack was > pulled part way out. The main speakers still would not cut off. > > Thanks to all who responded. If y'all can think of something else to > try let me know. > > Sincerely, > Injam > (AKA Benjamn Ransum) But remember, that the FrontX diagram is for connecting an AC'97 front panel wiring to an AC'97 motherboard header. You are connecting an AC'97 front panel wiring to an HDaudio motherboard header. I still think your "return Green" and "return Orange" should be disconnected. If your motherboard header is in an HDaudio mode of operation, those are sense pins, and are part of the isolated contact jack sensing. It doesn't make sense to connect anything to them, from your AC'97 front panel wiring. Pin 6 and Pin 10 are "no connection" for you. I think I know now, why the Intel document specifies a 1000 ohm resistor from pin 4 to GND, for the Presence# function. It covers the case, where a customer connects an HDaudio front panel wiring, to an AC'97 motherboard header. The AC'97 header has +5VA (analog power) on pin 4, and by using a 1000 ohm resistor, that prevents the +5VA pin from being overloaded. So it is a wise idea to use the 1000 ohm resistor, for backward compatibility. Since your audio is working, you don't need to wire to pin 4 (Presence#), but a real HDaudio computer case wiring may choose to do so. Page 20 here shows the original AC'97 header and this is what is used for most AC'97 motherboards. Intel tried to redefine the AC'97 header pinout in their A2928604-005.pdf on page 20, but this document is the way that most equipment in the industry is designed. Thus there are three test cases to worry about, old_AC'97_pinout (this one), new_AC'97_pinout, and HDaudio pinout. http://www.formfactors.org/developer/specs/fpio_design_guideline.pdf Paul >
> > Benjamin Ransum wrote: > > Hello,
> > My new computer case that I used to built my new computer has a front > > panel audio device. The wires are all labeled at the connection things > > that attach to the motherboard. My motherboard has a wire diagram, but > > I'm confused about one thing. On the front panel audio device there > > two EAR R and two EAR L connections. > > Does anyone know which EAR is out and which EAR is return? > > > > The case is an Ultra Aluminus and the motherboard is an Intel D975XBX. > > I called Ultra and they were no help. > > > > My mother board front panel audio header layout: > > Port1L (1) (2) GND > > Port1R (3) (4) Presence# > > Port2R (5) (6) Sense1_Ret > > Sense_Send (7) ( ) Key (no pin) > > Port2L (9) (10) Sense2_Ret > > From Intel's web site I was able to find out that Port1L is Mic, GND > > is GND, Port1R is Mic Power, Port2R is EAR R, Port2L is EAR L, > > Sense1_Ret is EAR R return, Sense2_Ret is EAR L return. > > > > I hope this stays together as I have typed it out on my computer. > > Please tell me which wire on the front panel audio device goes where > > on my mother board. > > The wires on the front panel audio device are labeled "Mic In" (Red), > > "GND" (Black), "Ear L" (Orange), "Ear R" (Green), "Ear R" (Brown), > > "Ear L" (Black), "Mic Power" (Yellow). > > > > Hope someone can help. > > > > Sincerely, > > Injam | |||||||||||||
> My new computer case that I used to built my new computer has a front
> panel audio device. The wires are all labeled at the connection things
> that attach to the motherboard. My motherboard has a wire diagram, but
> I'm confused about one thing. On the front panel audio device there
> two EAR R and two EAR L connections.
> Does anyone know which EAR is out and which EAR is return?
>
> The case is an Ultra Aluminus and the motherboard is an Intel D975XBX.
> I called Ultra and they were no help.
>
> My mother board front panel audio header layout:
> Port1L (1) (2) GND
> Port1R (3) (4) Presence#
> Port2R (5) (6) Sense1_Ret
> Sense_Send (7) ( ) Key (no pin)
> Port2L (9) (10) Sense2_Ret
> From Intel's web site I was able to find out that Port1L is Mic, GND
> is GND, Port1R is Mic Power, Port2R is EAR R, Port2L is EAR L,
> Sense1_Ret is EAR R return, Sense2_Ret is EAR L return.
>
> I hope this stays together as I have typed it out on my computer.
> Please tell me which wire on the front panel audio device goes where
> on my mother board.
> The wires on the front panel audio device are labeled "Mic In" (Red),
> "GND" (Black), "Ear L" (Orange), "Ear R" (Green), "Ear R" (Brown),
> "Ear L" (Black), "Mic Power" (Yellow).
>
> Hope someone can help.