Renesas SH7781 - Manual (Page 1262)

24. Multimedia Card Interface (MMCIF)
Rev.1.00 Jan. 10, 2008 Page 1232 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)
CMD20 (WRITE_DAT_UNTIL_STOP) CMD12(STOP_TRANSMISSION)
OPCR
(DATAEN)
Input/output pins
Command Command
response
Command
Stop command
execution sequence
Busy
Transfer
clock
trans-
mission
halted Transfer
clock
trans-
mission
halted Transfer
clock
transmission
resumed Transfer
clock
transmission
resumed
Writing data to FIFO
Data
transmission
suspended Data
transmission
suspended Data
transmission
resumed
Data
transmission
ended
Stream write command execution sequence
Command
response
Command
transmission
started
Write data Write data Write data
Figure 24.18 Example of Command Sequence for Commands with Write Data
(Stream Transfer)