09.12.2012 Views

RM0090: Reference manual - STMicroelectronics

RM0090: Reference manual - STMicroelectronics

RM0090: Reference manual - STMicroelectronics

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

<strong>RM0090</strong> Secure digital input/output interface (SDIO)<br />

Figure 309. SDIO (multiple) block write operation<br />

SDIO_CMD<br />

From host to card From card to host<br />

SDIO_D<br />

Optional cards Busy.<br />

Needed for CE-ATA<br />

Block write operation<br />

Note: The SDIO will not send any data as long as the Busy signal is asserted (SDIO_D0 pulled<br />

low).<br />

Figure 310. SDIO sequential read operation<br />

SDIO_CMD<br />

SDIO_D<br />

Data from host to card<br />

Figure 311. SDIO sequential write operation<br />

SDIO_CMD<br />

SDIO_D<br />

Multiple block write operation<br />

Stop command<br />

stops data transfer<br />

Command Response Command Response<br />

From host to<br />

card(s)<br />

Busy Data block crc Busy Data block crc Busy<br />

From card to host<br />

Data stop operation<br />

Stop command<br />

stops data transfer<br />

Command Response Command Response<br />

From host to<br />

card(s)<br />

Data from card to host<br />

Data transfer operation<br />

From card to host<br />

Data stream<br />

Data from host to card<br />

Data stop operation<br />

Stop command<br />

stops data transfer<br />

Command Response Command Response<br />

Data transfer operation<br />

Data stream<br />

Data stop operation<br />

ai14737<br />

ai14738<br />

ai14739<br />

Doc ID 018909 Rev 3 844/1416

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!