SH7785 Datasheet, PDF (1248/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

24. Multimedia Card Interface (MMCIF)
Input/output pins
MMCCLK
MMCCMD
MMCDAT
CMDSTRT
(CMDSTART)
OPCR
(RD_CONTI)
(CMDOFF)
INTSTR0
(CMDI)
(CRPI)
(DTI)
(FFI)
CSTR
(CWRE)
CMD17 (READ_SINGLE_BLOCK)
Command
Command response
Transfer clock
Transfer clock
transmission halted transmission resumed
Block data
Block data
reception suspended reception resumed
Command
transmission
started
Read data
Read data
Reading data
from FIFO
(BUSY)
(FIFO_FULL)
Single block read command execution sequence
(REQ)
Figure 24.9 Example of Command Sequence for Commands with Read Data
(Block Size > FIFO Size)
Rev.1.00 Jan. 10, 2008 Page 1218 of 1658
REJ09B0261-0100