24. Multimedia Card Interface (MMCIF)

Rev.1.00 Jan. 10, 2008 Page 1229 of 1658

REJ09B0261-0100

MMCCLK
MMCCMD
MMCDAT
CMDSTRT
(CMDSTART)
(CMDI)
CSTR
(CWRE)
(BUSY)
(DTBUSY)
(DTBUSY_TU)
(REQ)
(CRPI)
(DTI)
(DBSYI)
(FEI)
(FIFO_EMPTY)
CMD24 (WRITE_SINGLE_BLOCK)
OPCR
(DATAEN)
(DRPI)
INTSTR0
Input/output pins
Command
Command
response
Command
transmission
started
Single block write command execution sequence
Write data
Status
Busy
Figure 24.15 Example of Command Sequence for Commands with Write Data (Block Size FIFO Size)