r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1288

• 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 1258 of 1658
REJ09B0261-0100
No
No
No
Figure 24.28 Example of Operational Flow for Stream Write Transfer
(Set CMDR then CMDSTRT)
Start of command sequence
Set DMACR (in the MMCIF)
End of command sequence
Read response register
Clear DMACR to H'00
detected or DMA transfer
Configure the DMAC
DMA transfer end?
CRCERI interrupt
Set CMDOFF to 1
Execute CMD 20
Response status
Set DATAEN to 1
Execute CMD12
CRPI interrupt
FRDYI interrupt
FEI interrupt
Clear FIFO
detected?
detected?
detected?
normal?
end?
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
Set CMDOFF to 1
CTERI interrupt
detected?
Yes
No