SPRS377F–SEPTEMBER2008–REVISEDJUNE2014
UHPI_HCSUHPI_HAS(D)21UHPI_HCNTL[1:0]1UHPI_HR/W1UHPI_HHWIL43UHPI_HSTROBE(A)(C)1514UHPI_HD[15:0](output)5UHPI_HRDY(B)A.B.C.D.
UHPI_HSTROBEreferstothefollowinglogicaloperationonUHPI_HCS,UHPI_HDS1,andUHPI_HDS2:[NOT(UHPI_HDS1XORUHPI_HDS2)]ORUHPI_HCS.Dependingonthetypeofwriteorreadoperation(HPIDwithoutauto-incrementing;HPIA,HPIC,orHPIDwithauto-incrementing)andthestateoftheFIFO,transitionsonUHPI_HRDYmayormaynotoccur.
UHPI_HCSreflectstypicalUHPI_HCSbehaviorwhenUHPI_HSTROBEassertioniscausedbyUHPI_HDS1orUHPI_HDS2.UHPI_HCStimingrequirementsarereflectedbyparametersforUHPI_HSTROBE.ThediagramaboveassumesUHPI_HAShasbeenpulledhigh.
6137861st Half-Word151482nd Half-Word321221212Figure6-67.UHPIReadTiming(UHPI_HASNotUsed,TiedHigh)
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SPRS377F–SEPTEMBER2008–REVISEDJUNE2014
UHPI_HCS
UHPI_HAS(D)
1UHPI_HCNTL[1:0]1UHPI_HR/W1UHPI_HHWIL3UHPI_HSTROBE(A)(C)4321221212211UHPI_HD[15:0](input)5UHPI_HRDY(B)1st Half-Word181211122nd Half-Word1318135A.B.C.D.UHPI_HSTROBEreferstothefollowinglogicaloperationonUHPI_HCS,UHPI_HDS1,andUHPI_HDS2:[NOT(UHPI_HDS1XORUHPI_HDS2)]ORUHPI_HCS.Dependingonthetypeofwriteorreadoperation(HPIDwithoutauto-incrementing;HPIA,HPIC,orHPIDwithauto-incrementing)andthestateoftheFIFO,transitionsonUHPI_HRDYmayormaynotoccur.
UHPI_HCSreflectstypicalUHPI_HCSbehaviorwhenUHPI_HSTROBEassertioniscausedbyUHPI_HDS1orUHPI_HDS2.UHPI_HCStimingrequirementsarereflectedbyparametersforUHPI_HSTROBE.hediagramaboveassumesUHPI_HAShasbeenpulledhigh.
Figure6-69.UHPIWriteTiming(UHPI_HASNotUsed,TiedHigh)
198
PeripheralInformationandElectricalSpecificationsCopyright©2008–2014,TexasInstrumentsIncorporated
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