Xilinx ( XLNX) said its net income declined year over year, as investment impairment and restructuring charges weighed on the bottom line. The San Jose, Calif., maker of programmable chips said sales in the three months ended Sept. 27 increased 9% year over year to $483.5 million, in line with Wall Street expectations. Xilinx said sales in North America declined due to weakness in defense and wired communications markets. The chipmaker said it experienced strong sales of wireless communications chips in China. Shares of Xilinx were up 1.3%, or 26 cents, at $19.75 in extended trading Wednesday. Xilinx posted net income of $81.8 million, or 29 cents a share, vs. net income of $89.7 million, or 30 cents a share, at this time last year. Excluding more than $30 million of investment impairment and restructuring charges, Xilinx said its adjusted EPS was 38 cents, a penny higher than the average analyst expectation. The financial report come a day after rival Altera ( ALTR) reported strong results in the recently ended quarter, but offered a cautious outlook on account of the uncertainty created by the financial crisis. Xilinx also offered a lackluster forecast. The company said sales in the current quarter could range from up 2% sequentially to down 2% sequentially, which translates to a range of $473.8 million and $493.2 million. The average analyst expectation called for $492.3 million in fourth-quarter sales. While Xilinx did not specifically provide an EPS forecast, the sum of its various financial estimates suggest an EPS range between 36 cents and 41 cents in the fourth quarter. The average analyst expectation called for EPS of 39 cents.