SH7720 Datasheet, PDF (1138/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 31 MultiMediaCard Interface (MMCIF)
Command sequence start
FIFO clear
Execute CMD11 (CMDR to CMDSTRT)
Yes
Is CRCERI interrupt
generated?
No
Is CRPI interrupt
No
generated?
Yes
Read response register
Is response status
No
normal?
Yes
Yes
Is DTERI interrupt
generated?
No
No
Is FFI interrupt
generated?
Yes
No
Is data read
completed?
Yes
No
Is CTERI interrupt
generated?
Yes
Read data from FIFO
Write 1 to RD_CONTI
Read data from FIFO
Write 1 to CMDOFF
Execute CMD12
Write 1 to CMDOFF
Write 1 to CMDOFF
Execute CMD12
FIFO clear
Command sequence end
Figure 31.14 Operational Flowchart for Commands with Read Data (Stream Transfer)
Rev. 3.00 Jan. 18, 2008 Page 1076 of 1458
REJ09B0033-0300