Section 24 Multimedia Card Interface (MMCIF)
Rev.1.00 Dec. 13, 2005 Page 902 of 1286
REJ09B0158-0100
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All cards are initialized to the idle state by CMD0.
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The operation condition registers (OCR) of all cards are read via wired-OR and cards that
cannot operate are deactivated by CMD1.
The cards that are not deactivated enter the ready state.
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The card identifications (CID) of all cards in the ready state are read via wired-OR by CMD2.
Each card compares it's CID and data on the MCCMD, and if they are different, the card aborts
the CID output. Only one card in which the CID can be entirely output enters the acknowledge
state. When the R2 response is necessary, set CTOCR to H'01.
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A relative address (RCA) is given to the card in the acknowledge state by CMD3.
The card to which the RCA is given enters the standby state.
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By repeating CMD2 and CMD3, RCAs are given to all cards in the ready state to make them
enter the standby state.
(2) Operation of Relative Address Commands
CMD7, CMD9, CMD10, CMD13, CMD15, CMD39, and CMD55 are relative address commands
that address the card by RCA. The relative address commands are used to read card administration
information and original information, and to change the specific card states.
CMD7 sets one addressed card to the transfer state, and the other cards to the standby state. Only
the card in the transfer state can execute flash-memory operation commands, other than broadcast
or relative-address commands.
(3) Operation of Commands Not Requiring Command Response
Some broadcast commands do not require a command response.
Figure 24.3 shows an example of the command sequence for commands that do not require a
command response.
Figure 24.4 shows the operational flow for commands that do not require a command response.
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Make settings to issue the command.
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Set the START bit in CMDSTRT to 1 to start command transmission. MCCMD must be kept
driven until the end bit output is completed.
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The end of the command sequence is detected by poling the BUSY flag in CSTR or by the
command transmit end interrupt (CMDI).
Summary of Contents for SH7780 Series
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Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
Page 1336: ...Rev 1 00 Dec 13 2005 Page 1286 of 1286 REJ09B0158 0100 ...
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