RM0090 Rev 18 1021/1749
RM0090 Secure digital input/output interface (SDIO)
1075
Figure 323. 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 324. SDIO sequential read operation
Figure 325. SDIO sequential write operation
ai14737b
Command Response
Data block crc Data block crc
Data stop operation
From host to card From card to host
data from host to card Stop command
stops data transfer
Command Response
SDMMC_CMD
SDMMC_D
Busy
Block write operation
Busy
Multiple block write operation
ai14738b
Data stop operation
From card to host
Stop command
stops data transfer
Command Response Command Response
Data stream
Data transfer operation
From host to
card(s)
Data from card to host
SDMMC_CMD
SDMMC_D
ai14739b
Data stop operation
From card to host
Stop command
stops data transfer
ResponseCommand ResponseCommand
Data stream
Data transfer operation
From host to
card(s)
Data from host to card
SDMMC_CMD
SDMMC_D