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SMS01GAF Datasheet(PDF) 47 Page - Numonyx B.V |
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SMS01GAF Datasheet(HTML) 47 Page - Numonyx B.V |
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47 / 61 page  SMSxxxAF, SMSxxxFF, SMSxxxBF Serial peripheral interface (SPI) mode 47/61 command index field are binary: for example, it is '000000' for CMD0 and '100111' for CMD39. For more details about commands and arguments, please refer to the SD Memory Card Specification. Table 26. Command Format Table 27. Command Classes in SPI Mode 7.4 Responses There are several types of response tokens. As in the SD mode, all are transmitted MSB first. 7.4.1 R1 Format The card sends this response token after every command except for the SEND_STATUS command. R1 Format Responses are one Byte long. The MSB is always zero and the other bits indicate errors, an error being indicated by a '1'. Bit Position 47 46 [45:40] [39:8] [7:1] 0 Width (bits) 11 6 32 7 1 Value 01 x x x 1 Descriptions Start Bit Transmission Bit Command Index Argument CRC7 End Bit Card CMD Class (CCC) Class Description Supported Commands 0 1 9 10 121316 17 182425 27282930 323338 42 555658 59 Class 0 Basic ++ ++++ ++ Class 1 Not supported in SPI Class 2 Block Read + + + Class 3 Not supported in SPI Class 4 Block Write + + + Class 5 Erase + + + Class 6 Write Protection (optional) ++ + Class 7 Lock Card (optional) + Class 8 Application specific + + Class 9 Not supported in SPI Class 10 - Class 11 Reserved |
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