>On 3/16/09, Cory Walker <lal...@domain.hid> wrote: >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.
Solder pads may be a touch wheel connection remnants - looks similar to 2g. _________________________________ _______________________________________________ Linux4nano-dev mailing list Linux4nano-dev@gna.org https://mail.gna.org/listinfo/linux4nano-dev http://www.linux4nano.org
