Fri 14 Sep 2007
This week’s feature is the audio/video CODEC from Wolfson (often misspelled as Wolfsom). I don’t yet have the datasheet for this device but it is from the iPhone and can reportedly be found in some of the video iPods. It is difficult to distinguish the parts of the chip in their function, however, it is interesting to note that the device seems to have both EEPROM and RAM providing the possibility for some level of “firmware”. It can be seen that Wolfson is a Scottish company both on their website and on the die with a small image of Scotland.
Update: It appears that I made a mistake and the chip number should actually read WM8758BG (see iFixit), not WM87588G. Sorry about the confusion.
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March 17th, 2008 at 10:24 pm
Does anybody knows which is the ic on the u31 position in the ipod video mainboard 820-1975-A, I have one with this ic burn, for that reason the usb charge and comunications of the ipod don´t work, it can be charged by firewire.
It there any schematics of ipod mainboards?
May 21st, 2008 at 4:51 am
Up !
i’ve the same problem did ou find what is this U31 chip (marked BG on top ) and they have 6 pin