r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1286

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

24. Multimedia Card Interface (MMCIF)
Rev.1.00 Jan. 10, 2008 Page 1256 of 1658
REJ09B0261-0100
Figure 24.27 (3) Example of Write Sequence Flow (Pre-defined Multiple Block Transfer)
(Set CMDR then CMDSTRT)
Start of command sequence
Set DMACR (in the MMCIF)
Set the block size in TBCR
Read response register
Configure the DMAC
CRCERI interrupt
Set the number of
Execute CMD 25
Execute CMD 23
Response status
Execute CMD16
blocks in TBNCR
CRPI interrupt
normal end?
normal end?
Clear FIFO
detected?
detected?
CMD16
CMD 23
normal?
1
Yes
Yes
Yes
Yes
No
Yes
No
No
No
No
CTERI interrupt
detected?
2
Yes
No