Renesas SH7781 - Manual (Page 1260)

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