SH7785 Datasheet, PDF (1260/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

24. Multimedia Card Interface (MMCIF)
Input/output pins
MMCCLK
MMCCMD
MMCDAT
CMDSTRT
(CMDSTART)
OPCR
(DATAEN)
(CMDOFF)
INTSTR0
(CMDI)
(CRPI)
(DTI)
(DRPI)
(DBSYI)
(FEI)
CSTR
(CWRE)
(BUSY)
(FIFO_EMPTY)
(DTBUSY)
(DTBUSY_TU)
CMD24 (WRITE_SINGLE_BLOCK)
Command
Command
response
Command
transmission
started
Transfer clock
transmission
halted
Transfer clock
transmission resumed
Write data
Write data
Block data _{Block data}
transmission _transmission
suspended _resumed
Writing data to FIFO
Busy
Single block write command execution sequence
(REQ)
Figure 24.16 Example of Command Sequence for Commands with Write Data
(Block Size > FIFO Size)
Rev.1.00 Jan. 10, 2008 Page 1230 of 1658
REJ09B0261-0100