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SH7721 Datasheet(PDF) 1129 Page - Renesas Technology Corp |
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SH7721 Datasheet(HTML) 1129 Page - Renesas Technology Corp |
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1129 / 1524 page  Section 31 MultiMediaCard Interface (MMCIF) Rev. 3.00 Jan. 18, 2008 Page 1067 of 1458 REJ09B0033-0300 Note: In multiblock transfer, if you terminate the command sequence (by writing 1 in the CMDOFF bit) before the command response reception is completed (CRPI = 1), the command response cannot be received correctly. To receive a command response, continue the command sequence (by setting the RD_CONTI bit to 1) until the reception of the command response is completed. CLK CMD DAT CMDSTRT (START) INTSTR0 (CMDI) (CMDOFF) CSTR (CWRE) (BUSY) (REQ) (CRPI) (DTI) (FFI) (FIFO_FULL) CMD17(READ_SINGLE_BLOCK) OPCR (RD_CONTI) Input/output pins Command Command response Read data Command transmission started Single block read command execution sequence Figure 31.7 Example of Command Sequence for Commands with Read Data (Block Size ≤ FIFO Size) |
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