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about ADV7441 abnormal DE

Question asked by WilliamLian Employee on Apr 11, 2016
Latest reply on Apr 20, 2016 by JeyasudhaMuthuPerumal

in a customer, ADV7441A act as VGA input, ADV7441 ouput with external sync mode. there's a faile part be found, the symptom is: when the part be powered on, it work normally, but after sometime, the DE output will frozen to low lovel, meanwhile, HS and VS output normally, this issue only occured at one part with low probability, customer want to get explanation from ADI what will cause such issue?

BTW, when issue occured, customer checked all the registers, it didn't show any abnormal,  and this issue can be recoved by change the input resolution.