SH7785 Datasheet, PDF (1289/1692 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
Execute CMD 25
(Set CMDR then CMDSTRT)
Yes
CRCERI interrupt
detected?
No
No
CRPI interrupt
detected?
Yes
Read response register
Response status
No
normal ended?
Yes
Configure the DMAC
Set DMACR (in the MMCIF)
No
CTERI interrupt
detected?
Yes
1
2
Figure 24.29 (1) Example of Operational Flow for Auto-mode
Pre-defined Multiple Block Write Transfer
Rev.1.00 Jan. 10, 2008 Page 1259 of 1658
REJ09B0261-0100