r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1251

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Legend:
Len:
Cap:
n (FFI): Number of FIFO full interrupts (FFI) from the start of read sequence
No
Read data from FIFO
Block length [bytes]
FIFO size [bytes]
Set RD_CONTI to 1
Figure 24.12 Example of Operational Flow for Commands with Read Data
FFI interrupt
detected?
Yes
No
No
(Set CMDR then CMDSTRT)
Start of command sequence
End of command sequence
Read response register
Read data from FIFO
Set the size of block
for transfer in TBCR
Len - Cap × n (FFI)
CRCERI interrupt
Response status
CRCERI interrupt
Execute CMD16
Execute CMD17
DTERI interrupt
DTERI interrupt
CRPI inte rrupt
DTI interrupt
normal end?
Clear FIFO
detected?
detected?
detected?
detected?
detected?
detected?
CMD16
normal?
Cap ≥
(Single Block Transfer)
Yes
No
Yes
Yes
No
Yes
No
No
Yes
No
Yes
No
No
Yes
Yes
Yes
Set CMDOFF to 1
Clear FIFO
Rev.1.00 Jan. 10, 2008 Page 1221 of 1658
24. Multimedia Card Interface (MMCIF)
Set CMDOFF to 1
CTERI interrupt
detected?
REJ09B0261-0100
Yes
No