On Wednesday, November 14, 2012 11:30:01 AM UTC-6, willx wrote: > > I have a atv1 with a dead enternet port and I can do the BGA works(infact > I have replaced the IO chip of it,but enternet still not working) > but I know nothing about RAM chips,either SPD,if anyone who would love to > provide some help,I'll replace the RAM chips for test~ > sorry for my bad English~ >
There is a small filter on the ATV1 board between the RTL8100 chip and the ethernet jack. Internally, the filter is a couple of inductors and (if I remember correctly) maybe a cross connecting capacitor. Anyway, check continuity on that filter. Or just check that it is present. On one of my ATVs that chip popped right off of the board, and so the ethernet chip was no longer connected to the ethernet jack. As far as the memory expansion, since posting that idea a few years ago, I've been so backed up on projects I've never managed to do anything with it. Heck, I haven't even managed to set up a MythTV box using ATV clients. Sigh. Still on the to-do list. I have managed to coach several little league baseball teams. :-) If you're interested in giving it a try, these chips should do the trick: <http://www.ebay.com/itm/MT47H64M16HR-37EIT-E-Manu-MICRON-Encapsulation-BGA-1Gb-DDR2-SDRAM-Component-/110886795710?pt=LH_DefaultDomain_0&hash=item19d15e39be> Or these: <https://avnetexpress.avnet.com/store/em/EMController/DRAM-Chip/Micron/MT47H128M16RT-25E-C/_/R-13459725/A-13459725/An-0?action=part&catalogId=500201&langId=-1&storeId=500201&listIndex=-1&page=1&rank=2> The former are twice the capacity of the ATV1's current memory. The latter are four times the capacity of the ATV1's current memory. Four chips are required. However, I still don't know whether Apple included the extra bank and address lines on the circuit board. Assuming that the required address lines are present, after the memory is installed, it may still be necessary to make some change to the ATV1's firmware to get it to recognize the extra memory. I don't know if it auto-detects the size of the RAM, or is programmed for the manufactured size. Jeff Walther -- To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/atv-bootloader?hl=en
