r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1262

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

24. Multimedia Card Interface (MMCIF)
(FIFO_EMPTY)
Rev.1.00 Jan. 10, 2008 Page 1232 of 1658
REJ09B0261-0100
(DTBUSY_TU)
Input/output pins
(CMDSTART)
(CMDOFF)
CMDSTRT
MMCCMD
(DTBUSY)
(DATAEN)
MMCCLK
MMCDAT
INTSTR0
(DBSYI)
(CWRE)
(CMDI)
(CRPI)
(DRPI)
(BUSY)
OPCR
CSTR
(REQ)
(DTI)
(FEI)
Figure 24.18 Example of Command Sequence for Commands with Write Data
CMD20 (WRITE_DAT_UNTIL_STOP)
Command
transmission
started
Command
Stream write command execution sequence
Command
response
Data
transmission
suspended
Write data
(Stream Transfer)
Transfer
clock
trans-
mission
halted
Writing data to FIFO
Data
transmission
resumed
Transfer
clock
transmission
resumed
Write data
Write data
Data
transmission
suspended
Transfer
clock
trans-
mission
halted
Data
transmission
ended
Transfer
clock
transmission
resumed
CMD12(STOP_TRANSMISSION)
execution sequence
Stop command
Command
Busy
Command
response