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--- av:snes_sp_dif [2006/04/03 15:39] – 172.161.20.252
+++ av:snes_sp_dif [2019/08/27 20:45] (current) – external edit 127.0.0.1
@@ Line 9: / Line 9: @@
 Before you go any further, you need to find out what kind of APU you have.
 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:
 {{av:apu-module.jpg}} {{av:apu-onboard.jpg}}
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 Copyright ©2003 Alpha-II Productions
+==== Using a CS8406 ====
+As the CS8405 is getting hard to get these days, here's a connection diagram for the CS8406.
+{{av:snes_da_chip.gif}}
+And I thought a pic of the pins on the DSP might be useful.
+{{av:snes_s-dsp.jpg}}
+The clock, data, and reset pins are all in the same place.  just a couple differences in what goes to ground / Vcc. In regards to the AUDIO pin note above, the CS8406 datasheet is corrected with the AUDIO line low for valid audio data.
+I got so frustrated trying to solder wires to the DSP inside the APU can I ended up giving up on analog audio and lifting the pins. Don't do this! This will result in a nice black screen. It's all better now.