SH7785 Datasheet, PDF (1285/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

24. Multimedia Card Interface (MMCIF)
1
2
No
FRDYI interrupt
detected or DMA transfer
end?
Yes
Set DATAEN to 1
No
DMA transfer end?
Yes
Clear DMACR to H'00
No
DTI interrupt
detected?
Yes
CRCERI
Yes
or WRERI interrupt
detected?
No
Yes
DTERI interrupt
detected?
No
No
DRPI interrupt
detected?
Yes
No
DTBUSY detected?
Yes
No
DBSYI interrupt
detected?
Yes
No
Next block write?
Yes
Set CMDOFF to 1
Execute CMD12 or Stop Tran
Set CMDOFF to 1
Execute CMD12 or Stop Tran
Clear DMACR to H'00
Clear FIFO
Set CMDOFF to 1
End of command sequence
Figure 24.27 (2) Example of Write Sequence Flow (Open-ended Multiple Block Transfer)
Rev.1.00 Jan. 10, 2008 Page 1255 of 1658
REJ09B0261-0100