Renesas SH7781 User Manual

Page 1250

24. Multimedia Card Interface (MMCIF)

Rev.1.00 Jan. 10, 2008 Page 1220 of 1658
REJ09B0261-0100

CMD11 (READ_DAT_UNTIL_STOP)

CMD12
(STOP_TRANSMISSION)

Input/output

pins

Transfer clock
transmission resumed

Stop command

execution sequence

Data reception
resumed

Data reception ended

Read data from FIFO

Stream read command execution sequence

MMCCLK

MMCCMD

MMCDAT

CMDSTRT

(CMDSTART)

INTSTR0

(CMDI)

(CMDOFF)

CSTR

(CWRE)

(BUSY)

(REQ)

(CRPI)

(DTI)

(FFI)

(FIFO_FULL)

OPCR

(RD_CONTI)

Command

Read data

Command
response

Command Command

response

Command
transmission
started

Transfer clock
transmission
halted

Data reception
suspended

Figure 24.11 Example of Command Sequence for Commands with Read Data

(Stream Transfer)