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AT32F413
Series Reference Manual
2022.06.27
Page 335
Rev 2.00
Figure 23-1
SDIO “no response” and “no data” operations
Command
Command
Response
From
host
to card
From
card
to host
Operation (No data)
Operation (No response)
SDIO_D
SDIO_CMD
From
host
to card
Figure 23-2
SDIO multiple data block read operation
Command
Response
From
host
to card
From
card
to host
Data stop operation
Block read operation
SDIO_D
SDIO_CMD
Response
Data block
crc
Data from card
to host
Data block
crc
Data block
crc
Stop command stops
data transfer
Multiple block read operation
Command
Figure 23-3
SDIO multiple data block write operation
Command
Response
From
host
to card
From
card
to host
Data stop operation
Block write
operation
SDIO_D
SDIO_CMD
Response
Busy
Busy
Data from
host to card
Data blcok
crc
Data block
crc
Stop command stops
data transfer
Multiple block write operation
Busy
Optional card busy
Command
CRC ok response
and busy
From card
To host
Note: The SDIO will not send any data as long as the Busy signal is set (SDIO_D0 pulled
low).