r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1276

• 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 1246 of 1658
REJ09B0261-0100
Figure 24.23 (4) Example of Read Sequence Flow (Pre-defined Multiple Block Transfer)
Legend:
n (DTI): Number of data transfer end interrupts (DTI) from the start of read sequence
Set RD_CONTI to 1
No
No
No
No
End of command sequence
Clear DMACR to H'00
Set DMACR to H'84
DMA transfer end?
TBNCR = n (DTI)?
Set CMDOFF to 1
CRCERI interrupt
DTERI interrupt
DTI interrupt
BTI interrupt
detected?
detected?
detected?
detected?
1
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Clear DMACR to H'00
Set CMDOFF to 1
Execute CMD12
Clear FIFO
Clear DMACR to H'00
Set CMDOFF to 1
2