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4.16CPPIDMAEndofInterruptRegister(CPPIEOIR)
Registers
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Note:ThisregisterwaspreviouslynamedTCPPIEOIR,andthatnamewillcontinuetoexistinthe
CSLforbackwardcompatibility.
TheCPPIDMAEndofInterruptRegister(CPPIEOIR)isshowninFigure31anddescribedinTable32.
Figure31.CPPIDMAEndofInterruptRegister(CPPIEOIR)
3116
Reserved
R-0
15870
ReservedVECTOR
R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table32.CPPIDMAEndofInterruptRegister(CPPIEOIR)FieldDescriptions
BitFieldValueDescription
31-8Reserved0Reserved
7-0VECTOR0-FFhEndofInterruptVector
ThisisanapplicationspecificregisterwhichisessentiallyageneralpurposeoutputfromtheLCSAR.
Onecycleafterthisregisteriswritten,theeoi_vector[7:0]valuewillappearontheeoi_vectoroutputport
fromtheLCSARandtheeoi_writeoutputportwillbeassertedfor1clockcycle.Thisregisterisusedto
convertlevelsensitiveinterruptstopulsed,non-redundantinterrupts.Softwareshouldwriteallzerosfor
thevectorvalue.
UniversalSerialBus(USB)Controller 94SPRUGH3–November2008
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