“ 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.”

Source: http://microblog.routed.net/2007/09/14/ic-friday-wolfson-microelectronics-wm8758bg/

Package

Die