SH7720 Datasheet, PDF (1130/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 31 MultiMediaCard Interface (MMCIF)
Input/output pins
CLK
CMD
DAT
CMDSTRT
(START)
OPCR
(RD_CONTI)
(CMDOFF)
INTSTR0
(CMDI)
(CRPI)
(DTI)
(FFI)
CSTR
(CWRE)
CMD17 (READ_SINGLE_BLOCK)
Command
Command response
Command
transmission
started
Transfer clock
Transfer clock
transmission halted transmission resumed
Block data
Block data
reception suspended ^{reception resumed}
Read data
Read data
Reading data
from FIFO
(BUSY)
(FIFO_FULL)
Single block read command execution sequence
(REQ)
Figure 31.8 Example of Command Sequence for Commands with Read Data
(Block Size > FIFO Size)
Rev. 3.00 Jan. 18, 2008 Page 1068 of 1458
REJ09B0033-0300