Recently I've been working on creating an annotation of the hardware on all the Nanos. I've identified pretty much every chip, but there's a couple on the 4G Nano that have got me stumped. Here is a picture: http://s1.guide-images.ifixit.com/igi/UKWEbJRmqHRQJYC1.large. The two small chips on the bottom are giving me the trouble. I'm pretty sure that the one on the very bottom right is the audio codec (Wolfson?) because it is near the headphone jack and a similar chip resides near the headphones on the Touch 2G, too. I have no idea what the other one is, though. My two best guesses are a voltage regulator and utility flash. The Touch 2G also has a similar chip near the power supply circuitry, which would indicate that the chip is a regulator. This would make sense, but why would the regulator be so far away from the power manager at the top? I can't find any datasheets on this chip. What do you guys think? (Sorry if that didn't make any sense; it's hard to explain)
Also, I've been wondering about some unused solder pads on the 3G Nano board (http://s2.guide-images.ifixit.com/igi/53jLIMXuBwEVknSS.large). On the top left, there are two sections of pads that look like one could hold a small IC and the other could possibly hold a small connector. Could this be the remnants of some sort of debugging platform (JTAG?). From the picture, I can't quite make out where the traces lead, but it looks like some could go to the SDRAM or processor. _______________________________________________ Linux4nano-dev mailing list Linux4nano-dev@gna.org https://mail.gna.org/listinfo/linux4nano-dev http://www.linux4nano.org
