Renesas SH7781 - Manual (Page 1256)

24. Multimedia Card Interface (MMCIF)
Rev.1.00 Jan. 10, 2008 Page 1226 of 1658
REJ09B0261-0100
Start of command sequence
Clear FIFO
Read response register
Execute CMD11
(CMDR to CMDSTRT)
No
Yes
(CRCERI) interrupt
detected?
Yes
No
(CRPI) interrupt
detected?
Yes
No
Response status
normal ended?
Yes
No
End of command sequence
(CTERI) interrupt
detected?
Yes
No
(FFI) interrupt
detected?
Set the CMDOFF to 1
Read data from FIFO
Set the RD_CONTI to 1
No
Yes
(DTERI) interrupt
detected?
Yes
No
Data read
completed?
Set the CMDOFF to 1
Execute CMD12 Execute CMD12
Read data from FIFO
Set the CMDOFF to 1
Clear FIFO
Figure 24.14 Example of Operational Flow for Commands with Read Data
(Stream Transfer)