The WSJ are reporting Freescale will soon be going public again. Their parent company file for an iPO last week, and are trying to raise about $1b USD. Freescale was spun off from Motorola in 2004, and then they went private in 2006.
Freescale don't really have the same marketing presence as their competition (Marvell, Qualcomm, nVidia). But they do power a fair number of ereaders including the Kindle, Kobo Wifi, the latest Sony Readers, and the (now deceased) Irex Digital Readers.