Section 24 Multimedia Card Interface (MMCIF)
Rev.1.00 Dec. 13, 2005 Page 904 of 1286
REJ09B0158-0100
Yes
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
(CMDI) interrupt detected?
End of command sequence
No
Figure 24.4 Example of Operational Flow for Commands
Not Requiring Command Response
(4) Operation of Commands without Data Transfer
Broadcast, relative address, and flash memory operation commands include a number of
commands that do not include data transfer. Such commands execute the desired data transfer
using command arguments and command responses. For a command that is related to time-
consuming processing such as flash memory write/erase, the card indicates the data busy state via
the MCDAT.
Figures 24.5 and 24.6 show examples of the command sequence for commands without data
transfer.
Figure 24.7 shows the operational flow for commands without data transfer.
•
Make settings to issue the command.
•
Set the START bit in CMDSTRT to 1 to start command transmission.
Command transmission completion can be confirmed by the command transmit end interrupt
(CMDI).
Содержание SH7780 Series
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Страница 450: ...Section 11 Local Bus State Controller LBSC Rev 1 00 Dec 13 2005 Page 400 of 1286 REJ09B0158 0100 ...
Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
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Страница 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
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Страница 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Страница 1070: ...Section 26 Serial Sound Interface SSI Module Rev 1 00 Dec 13 2005 Page 1020 of 1286 REJ09B0158 0100 ...
Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
Страница 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
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