标签: vt6103

VIAVT6103EMIDESIGNRESEARCHVIAVT6103EMIDESIGNRESEARCHAndree2002.8.8.1.Subject2.SymptomSymptom:Lanportradiate200,250,350IMEnoise.VAITV6103iwllahevIMEnoisearound200,250,350.zHM3.AnalysisAnalysistableITEMfreqDb1200-66SOULTIONRemarkputmeasureatdecouplingcap.forVCCTX+putdecouplingcap.forVCCandputcap.On3V_DUALputdecouplingcap.forVCCandputcap.On3V_DUAL,PUTvcc5cap.Putcrystalcap.AsfarasTX+/-,2351-603200,250,350-704.Solution5.Circuit102p3V_LANC1883VDUAL3V_LANTXTX+RXRX+R193R192R191R19049.9RST49.9RST49.9RST49.9RSTC184103P32334041RXRX+TXTX+ACT_LEDR166R1833303303VDUAL3V_LANLED0/TEST#LED1/SPD100LED2/DUPLEXLED3/NWAYENINT#/PHYAD0REXTSD/FXENPD#RST#XIGNDOSCGNDRXGNDTXGNDTXC……