SH7785 Datasheet, PDF (1256/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

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