ST STM32L4x6 Reference Manual page 1444

SD/SDIO/MMC card host interface (SDMMC)
31 30 29
Res. Res. Res. Res.
15 14 13
Res. Res. Res. Res.
Bits 31:23 Reserved, must be kept at reset value.
Bit 22 SDIOITC: SDIOIT flag clear bit
Set by software to clear the SDIOIT flag.
0: SDIOIT not cleared
1: SDIOIT cleared
Bits 21:11 Reserved, must be kept at reset value.
Bit 10 DBCKENDC: DBCKEND flag clear bit
Set by software to clear the DBCKEND flag.
0: DBCKEND not cleared
1: DBCKEND cleared
Bit 9 Reserved, must be kept at reset value.
Bit 8 DATAENDC: DATAEND flag clear bit
Set by software to clear the DATAEND flag.
0: DATAEND not cleared
1: DATAEND cleared
Bit 7 CMDSENTC: CMDSENT flag clear bit
Set by software to clear the CMDSENT flag.
0: CMDSENT not cleared
1: CMDSENT cleared
Bit 6 CMDRENDC: CMDREND flag clear bit
Set by software to clear the CMDREND flag.
0: CMDREND not cleared
1: CMDREND cleared
Bit 5 RXOVERRC: RXOVERR flag clear bit
Set by software to clear the RXOVERR flag.
0: RXOVERR not cleared
1: RXOVERR cleared
Bit 4 TXUNDERRC: TXUNDERR flag clear bit
Set by software to clear TXUNDERR flag.
0: TXUNDERR not cleared
1: TXUNDERR cleared
Bit 3 DTIMEOUTC: DTIMEOUT flag clear bit
Set by software to clear the DTIMEOUT flag.
0: DTIMEOUT not cleared
1: DTIMEOUT cleared
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28 27 26 25
Res. Res. Res.
12 11 10 9
DBCK
Res. Res.
ENDC
rw
24 23 22
SDIO
Res. Res.
ITC
rw
8 7 6
CMD
DATA CMD
REND
ENDC SENTC
C
rw rw rw
DocID024597 Rev 3
21 20 19
Res. Res. Res.
5 4 3
RX TX
DTIME
OVERR UNDERR
OUTC
C C
rw rw rw
RM0351
18 17 16
Res. Res. Res.
2 1 0
CTIME DCRC CCRC
OUTC FAILC FAILC
rw rw rw