Figure 178. Sdio (Multiple) Block Write Operation; Figure 179. Sdio Sequential Read Operation; Figure 180. Sdio Sequential Write Operation - ST STM32F102 Series Reference Manual

SDIO interface (SDIO)

Figure 178. SDIO (multiple) block write operation

SDIO_CMD
Optional cards Busy.
Needed for CE-ATA
Note: The SDIO will not send any data as long as the Busy signal is asserted (SDIO_D0 pulled
low).

Figure 179. SDIO sequential read operation

SDIO_CMD
SDIO_D

Figure 180. SDIO sequential write operation

SDIO_CMD
SDIO_D
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From host to card From card to host
Command Response
SDIO_D
From host to
card(s)
From card to host
Command Response
From host to
card(s)
From card to host
Command Response
Data from host to card
Busy Data block crc
Busy
Block write operation
Multiple block write operation
Data from card to host
Data stream
Data transfer operation
Data from host to card
Data stream
Data transfer operation
Stop command
stops data transfer
Command Response
Data block crc Busy
Data stop operation
ai14737
Stop command
stops data transfer
Command Response
Data stop operation
ai14738
Stop command
stops data transfer
Command Response
Data stop operation
ai14739
RM0008