SH7785 Datasheet, PDF (1282/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

24. Multimedia Card Interface (MMCIF)
Start of command sequence
Clear FIFO
Set the size of block
for transfer in TBCR
Execute CMD16
CMD16
No
normal end?
Yes
Execute CMD 24
(Set CMDR then CMDSTRT)
Yes
CRCERI interrupt
detected?
No
No
CRPI interrupt
detected?
Yes
Read response register
No
Response status
normal?
Yes
Configure the DMAC
Set DMACR (in the MMCIF)
No
CTERI interrupt
detected?
Yes
1
2
Figure 24.26 (1) Example of Write Sequence Flow (Single Block Transfer)
Rev.1.00 Jan. 10, 2008 Page 1252 of 1658
REJ09B0261-0100