BUZZ-U.S. stocks: getting chipped

** Semis down 4 pct and lead losses as tech sectorbackpedals and drags S&P500 and Nasdaq lower

** Weak PC sales, pullback in growth stocks cited as reasonsby one trader at a U.S. bulge-bracket who adds concerns buildingover Q2 forecasts which should be out over next few weeks

** UBS downgrade of Advanced Micro Devices to "sell"from "neutral" sends stock down 7.7 pct

** Weak US durable goods report lends to worries that strongdollar means chipmakers holding off on ordering newmanufacturing equipment, analyst says

** Skyworks Solutions, Lam Research, AvagoTech, NXP Semiconductor drop 3-6 pct

** US chip equipment makers KLA-Tencor, AppliedMaterials fall 3-5 pct

** Apple off 1.8 pct

** Close below the March 12 low for the Philadelphia SESemiconductor Index would be bearish

** Sharp move lower in U.S. tech hit European chipmakers

** ARM falls 6 pct, its worst daily performancesince February 2014, ASML and STmicro bothdown more than 4 pct (Messaging: lance.tupper.thomsonreuters.com@reuters.net;Messaging: alasdair.pal.thomsonreuters.com@reuters.net;Messaging: noel.randewich.thomsonreuters.com@reuters.net)