Filter
Top Products
www.ti.com
Registers
Table8.MMCStatusRegister0(MMCST0)FieldDescriptions(continued)
BitFieldValueDescription
5CRCWRWrite-dataCRCerror.
0Awrite-dataCRCerrorhasnotbeendetected.
1Awrite-dataCRCerrorhasbeendetected.
4TOUTRSResponsetime-outevent.
0Aresponsetime-outeventhasnotoccurred.
1Atime-outeventhasoccurredwhiletheMMCcontrollerwaswaitingforaresponsetoacommand.
3TOUTRDRead-datatime-outevent.
0Aread-datatime-outeventhasnotoccurred.
1Atime-outeventhasoccurredwhiletheMMCcontrollerwaswaitingfordata.
2RSPDNECommand/responsedone.
0Noreceivingresponseisdone.
1Responsesuccessfullyhasreceivedorcommandhassentwithoutresponse.
1BSYDNEBusydone.
0Nobusyreleasingisdone.
1Releasedfrombusystateorexpectedbusyisnotdetected.
0DATDNEDatadone
0Thedatahasnotbeenfullytransmitted.
1Thedatahasbeenfullytransmitted.
Note:1)AsthecommandportionandthedataportionoftheMMC/SDcontrollerare
independent,anycommandsuchasCMD0(GO_IDLE_STATE)orCMD12
(STOP_TRANSMISSION)canbesenttothecard,evenduringblocktransfer.Inthis
situation,thedataportiondetectsthisandwaits,releasingthebusystateonlywhenthe
commandsentwasR1b(tobespecific,commandwithBSYEXPbit),otherwiseit
continuestransferringdata.
2)Bit12(TRNDNE)indicatesthatthelastbyteofatransferhasbeencompleted.Bit0
(DATDNE)occursatendofatransfer,butnotuntiltheCRCcheckandprogramminghas
completed.
MultimediaCard(MMC)/SecureDigital(SD)CardController 44SPRUE30B–September2006
SubmitDocumentationFeedback