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av:snes_sp_dif [2005/10/30 11:06] – created nfgav:snes_sp_dif [2005/10/30 11:36] – Moved and fixed images. nfg
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 I'm assuming you already have a 4.5mm Nintendo screwdriver bit, otherwise you're going to have some difficulty getting into your SNES.  Remove the six screws from the bottom, then take the top of the deck off.  If you live in North America, you'll likely be presented with one of the two images:  I'm assuming you already have a 4.5mm Nintendo screwdriver bit, otherwise you're going to have some difficulty getting into your SNES.  Remove the six screws from the bottom, then take the top of the deck off.  If you live in North America, you'll likely be presented with one of the two images: 
-{{apu-module.jpg}} {{apu-onboard.jpg}}+{{av:apu-module.jpg}} {{av:apu-onboard.jpg}}
  
 Look in the upper right corner.  If you see a silver box that reads SHVC-SOUND, then you have one of the first SNES decks. Look in the upper right corner.  If you see a silver box that reads SHVC-SOUND, then you have one of the first SNES decks.
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 Next you'll need to take the lid off the underside of the module (the side with the 24-pin connector).  Slide a small standard screwdriver under the lip on one of the sides.  Carefully push the lip off the module.  Do this on each side until the lid comes off.  Next you'll need to take the lid off the underside of the module (the side with the 24-pin connector).  Slide a small standard screwdriver under the lip on one of the sides.  Carefully push the lip off the module.  Do this on each side until the lid comes off. 
  
-{{shvc-sound.jpg}}+{{av:shvc-sound.jpg}}
  
 __2.2 Getting the heatsink off__ __2.2 Getting the heatsink off__
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 __2.3 Toss the RF module__ __2.3 Toss the RF module__
  
-{{rfmodule.jpg}}+{{av:rfmodule.jpg}}
  
  When was the last time you used the RF adaptor?  If your home theater system is sophisticated enough that you need an S/PDIF out, then you probably won't be using the RF adaptor with your TV.  I mention this because the RF out is a good place to put your S/PDIF connector.  This way you don't need to drill any new holes in your case.  When was the last time you used the RF adaptor?  If your home theater system is sophisticated enough that you need an S/PDIF out, then you probably won't be using the RF adaptor with your TV.  I mention this because the RF out is a good place to put your S/PDIF connector.  This way you don't need to drill any new holes in your case.
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 Using the clock signals from the DSP results in synchronous operation in the CS8405A, but the output from the DSP isn't exactly 32kHz.  Using the clock signals from the DSP results in synchronous operation in the CS8405A, but the output from the DSP isn't exactly 32kHz. 
  
-{{snes-hz.jpg}}+{{av:snes-hz.jpg}}
  
 As you can see here, my SNES is outputting samples at about 32040Hz.  (Though you can't see the detail in this picture, the upper trace is of the 16-bit samples and the lower trace is the sample clock.)  This shouldn't be a problem unless you're trying to sync S/PDIF devices or your input device insists on using its own clock. As you can see here, my SNES is outputting samples at about 32040Hz.  (Though you can't see the detail in this picture, the upper trace is of the 16-bit samples and the lower trace is the sample clock.)  This shouldn't be a problem unless you're trying to sync S/PDIF devices or your input device insists on using its own clock.
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 If you want to use a coaxial (RCA) output, you'll need to throw in a couple of resistors to drop the voltage down to the consumer grade 0.5 volts. If you want to use a coaxial (RCA) output, you'll need to throw in a couple of resistors to drop the voltage down to the consumer grade 0.5 volts.
-{{coaxial.gif}}+{{av:coaxial.gif}}
    
 **__4. Put it back together__** **__4. Put it back together__**
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 Here's the final product.  I don't have a very good digital camera, or I'd have put up better pictures.  Here's the final product.  I don't have a very good digital camera, or I'd have put up better pictures. 
  
-{{snes-final.jpg}}+{{av:snes-final.jpg}}
  
 Hope you remember where all those screws went. :) Hope you remember where all those screws went. :)
av/snes_sp_dif.txt · Last modified: 2019/08/27 20:45 by 127.0.0.1