SH7763 Datasheet, PDF (1398/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 31 Multimedia Card Interface (MMCIF)
Start of command sequence
Set command data to
CMDR0 to CMDR4
Set command type to CMDTYR
Set command response type
to RSPTYR
Set the START bit
in CMDSTRT to 1
*
Yes
CRCERI
interrupt detected?
No
CRPI
No
interrupt detected?
Yes
R1b
No
response?
Yes
DTBUSY
No
detected?
Yes
CTERI interrupt
No
detected?
Yes
No
DBSYI
interrupt detected?
Yes
Set the CMDOFF to 1
End of command sequence
Note: In R2 command response case, determine
whether or not error exists through CRC check
by software. Hardware executes no CRC check.
Figure 31.6 Example of Operational Flow for Commands without Data Transfer
Rev. 1.00 Oct. 01, 2007 Page 1332 of 1956
REJ09B0256-0100