SH7785 Datasheet, PDF (1267/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

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