SH7785 Datasheet, PDF (1275/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

24. Multimedia Card Interface (MMCIF)
Start of command sequence
Clear FIFO
Set the block size in TBCR
Execute CMD16
CMD16
No
normal end?
Yes
Set the number of
blocks in TBNCR
Execute CMD 23
CMD 23
No
normal end?
Yes
Configure the DMAC
Set DMACR (in the MMCIF)
Execute CMD 18
(Set CMDR then CMDSTRT)
Yes
CRCERI interrupt
detected?
No
No
CRPI interrupt
detected?
Yes
Read response register
No
Response status
normal?
Yes
1
CTERI interrupt
No
detected?
Yes
2
Figure 24.23 (3) Example of Read Sequence Flow (Pre-defined Multiple Block Transfer)
Rev.1.00 Jan. 10, 2008 Page 1245 of 1658
REJ09B0261-0100