SH7763 Datasheet, PDF (1412/2026 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
Clear FIFO
Set the number of
transfer block size to TBCR
Execute CMD16
CMD16
No
normally ended?
Yes
Execute CMD24
(CMDR to CMDSTRT)
CRPI interrupt
No
detected?
Yes
Read response register
Response status
No
normally ended?
Yes
Writing data to FIFO
Set the DATAEN to 1
No
FEI interrupt
detected?
Yes
No
Cap × n (FEI) ≥ Len
Yes
No
DTI interrupt
detected?
Yes
Yes
CRCERI interrupt
detected?
No
Yes
DTERI interrupt
detected?
No
No
DRPI interrupt
detected?
Yes
No
DTBUSY detected?
Yes
No _{DBSYI interrupt}
detected?
Yes
End of command sequence
No
CTERI interrupt
detected?
Yes
Set the CMDOFF to 1
[Legend]
Len: Block length [Byte]
Cap: FIFO size [Byte]
n (FEI): Number of FEI from write sequence starts
Figure 31.16 Example of Operational Flow for Commands with Write Data
(Single Block Transfer)
Rev. 1.00 Oct. 01, 2007 Page 1346 of 1956
REJ09B0256-0100