Renesas SH7781 - Manual (Page 1282)

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