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1.2Normal-ModeOperation
Normal-ModeOperation
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Bydefault,theEVMshouldbeconfiguredtooperateinnormalmode.Thesixjumpers(J7,J11,J13,J14,
J15,andJ16)shouldbecoveringbothpinsofeachheader(seeFigure1-2).
Figure1-2.PowerJumpers
ThedipswitchshouldbeconfiguredwithSCLslideswitchintheuppositionandDN1_DPSTRP,
DN2_DPSTRP,andDN3_DPSTRPslideswitchesinthedownposition(seeFigure1-3).This
configurationenablestheEEPROManddisableshot-plugoperation.
Figure1-3.DipswitchConfiguration
TheEEPROM(U3)shouldalsobepreconfiguredfornormal-modeoperation.SeeSection1.5foran
explanationofhowtoconfiguretheEEPROM.UpondeassertionofPERST,theXIO3130automatically
readsdatafromtheEEPROM.ThisdataisusedtopresetvariousPCIconfigurationregisterbits.For
normal-modeoperation,thedataintheEEPROMwillconfigurebitsinthefollowingregisters:
•GPIOCcontrolregister(PCIregisteroffset:C0hinupstreambridge)
–PCIE_GPIO12_CTL=010b–Port1ACT_LED0
–PCIE_GPIO13_CTL=011b–Port2ACT_LED1
–PCIE_GPIO14_CTL=100b–Port3ACT_LED2
SettingthesebitsconfiguresLED1asactivityLEDforport1,LED2asactivityLEDforport2,andLED3
asactivityLEDforport3.AnytimeaTLPistransferredtoorfromtheslot,theactivityLEDflashes.LEDs
4and5arenonfunctionalinnormalmode;pressingthepushbuttonswillhavenoeffectontheXIO3130.
2XIO3130EVMSLLU108–July2008
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