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4.14TransmitCPPIControlRegister(TCPPICR)
4.15TransmitCPPITeardownRegister(TCPPITDR)
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Registers
TheTransmitCPPIControlRegister(TCPPICR)isshowninFigure29anddescribedinTable30.
Figure29.TransmitCPPIControlRegister(TCPPICR)
3116
Reserved
R-0
1510
ReservedTCPPI_ENABLE
R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table30.TransmitCPPIControlRegister(TCPPICR)FieldDescriptions
BitFieldValueDescription
31-1Reserved0Reserved
0TCPPI_ENABLETransmitCPPIEnableControlsiftheTransmitCPPIDMAcontrollerisenabled.Besuretoprogram
theCPPIchainandsettheDMAstatewordsbeforeenablingtheDMA.FailuretoinitializetheDMA
beforeenablingcouldresultinspurioustransfersandmemorycorruption.
0TransmitCPPIDMAisdisabled
1TransmitCPPIDMAisenabled
TheTransmitCPPITeardownRegister(TCPPITDR)isshowninFigure30anddescribedinTable31.
Figure30.TransmitCPPITeardownRegister(TCPPITDR)
313016
READYReserved
R-1R-0
15210
ReservedCHANNEL
R-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table31.TransmitCPPITeardownRegister(TCPPITDR)FieldDescriptions
BitFieldValueDescription
31READY0-1IndicatesiftheTeardownregistercanbewritten
30-2Reserved0Reserved
1-0CHANNEL0-3hTeardownChannel
Indicatesthechannelthatistobetorndown
SPRUGH3–November2008UniversalSerialBus(USB)Controller93
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