RM0090 Secure digital input/output interface (SDIO)
Doc ID 018909 Rev 4 848/1422
Figure 310. SDIO (multiple) block write operation
Note: The SDIO will not send any data as long as the Busy signal is asserted (SDIO_D0 pulled
low).
Figure 311. SDIO sequential read operation
Figure 312. SDIO sequential write operation
ai14737
Block write operation
Data stop operation
Multiple block write operation
From host to card From card to host
Data from host to card
Stop command
stops data transfer
Optional cards Busy.
Needed for CE-ATA
Command Response Command Response
Data block
crc
Busy
Busy
Data block crc
Busy
SDIO_CMD
SDIO_D
ai14738
Data stop operation
From card to host
Stop command
stops data transfer
Command Response Command Response
Data transfer operation
Data stream
From host to
card(s)
Data from card to host
SDIO_CMD
SDIO_D
ai14739
Data stop operation
From card to host
Stop command
stops data transfer
Command Response Command Response
Data transfer operation
Data stream
From host to
card(s)
Data from host to card
SDIO_CMD
SDIO_D
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