r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1267

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

Figure 24.20 (4) Example of Operational Flow for Commands with Write Data
Legend:
Len:
Cap:
n (FEI):
n (DRPI): Number of data response interrupts (DRPI) from the start of write sequence
Note: * Write block size of data (if block size < or = FIFO size) or FIFO size of data (if block size > FIFO size).
Block length [bytes]
FIFO size [bytes]
Number of FIFO empty interrupts (FEI) from the start of read sequence
No
No
No
No
No
No
No
- Len (1 + n (DRPI))
DTBUSY detected?
TBNCR = n(DRPI)?
Set CMDOFF to 1
Write data to FIFO
CRCERI interrupt
Set DATAEN to 1
DBSYI interrupt
DTERI interrupt
DRPI interrupt
Cap × n (FEI)
FEI interrupt
DTI interrupt
BTI interrupt
detected?
detected?
detected?
detected?
detected?
detected?
detected?
≥ Len
1
(Pre-defined Multiple Block Transfer)
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
*
End of command sequence
Set CMDOFF to 1
Execute CMD12
Rev.1.00 Jan. 10, 2008 Page 1237 of 1658
24. Multimedia Card Interface (MMCIF)
Set CMDOFF to 1
2
REJ09B0261-0100