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NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 926 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
[13]
DITO_IF
Data Input Time-out Interrupt Flag (Read Only)
This bit indicates that SD host counts to time-out value when receiving data (waiting start bit).
0 = Not time-out.
1 = Data input time-out.
NOTE:
This bit is read only, but can be cleared by writing ‘1’ to it.
[12]
RITO_IF
Response Time-out Interrupt Flag (Read Only)
This bit indicates that SD host counts to time-out value when receiving response or R2
(waiting start bit).
0 = Not time-out.
1 = Response time-out.
NOTE:
This bit is read only, but can be cleared by writing ‘1’ to it.
[11]
SDIO1_IF
SDIO 1 Interrupt Flag (Read Only)
This bit indicates that SDIO card 1 issues an interrupt to host. This interrupt is designed to
level sensitive. Before clear it, turn off SDIO1_IE (SDH_INTEN[11]) first.
0 = No interrupt is issued by SDIO card 1.
1 = an interrupt is issued by SDIO card 1.
NOTE:
This bit is read only, but can be cleared by writing ‘1’ to it.
[10]
SDIO0_IF
SDIO 0 Interrupt Flag (Read Only)
This bit indicates that SDIO card 0 issues an interrupt to host. This interrupt is designed to
level sensitive. Before clear it, turn off SDIO0_IE (SDH_INTEN[10]) first.
0 = No interrupt is issued by SDIO card 0.
1 = an interrupt is issued by SDIO card 0.
NOTE:
This bit is read only, but can be cleared by writing ‘1’ to it.
[9]
CD1_IF
SD0 Card Detection Interrupt Flag (Read Only)
This bit indicates that SD card 1 is inserted or removed. Only when CD1_IE (SDH_INTEN[9])
is set to 1, this bit is active.
0 = No card is inserted or removed.
1 = There is a card inserted in or removed from SD1.
NOTE:
This bit is read only, but can be cleared by writing ‘1’ to it.
[8]
CD0_IF
SD0 Card Detection Interrupt Flag (Read Only)
This bit indicates that SD card 0 is inserted or removed. Only when CD1_IE (SDH_INTEN[8])
is set to 1, this bit is active.
0 = No card is inserted or removed.
1 = There is a card inserted in or removed from SD0.
NOTE:
This bit is read only, but can be cleared by writing ‘1’ to it.
[7]
SDDAT0
DAT0 Pin Status of Current Selected SD Port (Read Only)
This bit is the DAT0 pin status of current selected SD port.
[6:4]
CRCSTAT
CRC Status Value of Data-out Transfer (Read Only)
SD host will record CRC status of data-out transfer. Software could use this value to identify
what type of error is during data-out transfer.
010 = Positive CRC status.
101 = Negative CRC status.
111 = SD card programming error occurs.