Motorola today announced it will spin off its semiconductor unit, which manufactures the PowerPC G4 processor, into a separate, publicly traded company. The company says the move reflects its “increasing focus on finished communications products, such as wireless networks and cell phones.” Details for the split have not been finalized, but Motorola says “the new publicly traded semiconductor business plans to pursue acquisitions of additional strategic product lines and technology.” Shares of the company were up 7% in pre-market trading.