Renesas SH7781 - Manual (Page 1266)

24. Multimedia Card Interface (MMCIF)
Rev.1.00 Jan. 10, 2008 Page 1236 of 1658
REJ09B0261-0100
Start of command sequence
Clear FIFO
Execute CMD16
Set the number of
blocks in TBNCR
Read response register
Execute CMD25
(Set CMDR then CMDSTRT)
Set the block size in TBCR
No
Yes
CRCERI interrupt
detected?
Yes
No
CMD16
normal end?
Yes
No
CRPI interrupt
detected?
Yes
No
Response status
normal?
Yes
No
CTERI interrupt
detected?
Execute CMD 23
Yes
No
CMD 23
normal end?
1 2
Figure 24.20 (3) Example of Operational Flow for Commands with Write Data
(Pre-defined Multiple Block Transfer)