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SMS01GAF bảng dữ liệu(PDF) 14 Page - Numonyx B.V |
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SMS01GAF bảng dữ liệu(HTML) 14 Page - Numonyx B.V |
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14 / 61 page ![]() Secure digital memory card interface SMSxxxAF, SMSxxxFF, SMSxxxBF 14/61 Figure 3. MicroSD pin assignment Table 9. MicroSD Contact Pad Assignment Pin SD Mode SPI Mode Name Type(1) 1. S: power supply; I: input; O: output using push-pull drivers; PP: I/O using push-pull drivers. Description Name Type Description 1 DAT2 I/O/PP Data Line [Bit 2] RSV Reserved 2 CD/DA T3(2) 2. The extended DAT lines (DAT1-DAT3) are input on power up. They start to operate as DAT lines after SET_BUS_WIDTH command. The Host shall keep its own DAT1-DAT3 lines in input mode, as well, while they are not used. It is defined so, in order to keep compatibility to MultiMediaCards. I/O/PP (3) 3. After power up this line is input with 50KOhm pull-up (can be used for card detection or SPI mode selection). The pull-up should be disconnected by the user, during regular data transfer, with SET_CLR_CARD_DETECT (ACMD42) command. Card Detect / Data Line [Bit 3] CS I Chip Select (neg true) 3 CMD PP Command/Response DI I Data In 4 VDD S Supply voltage VDD S Supply voltage 5 CLK I Clock SCLK I Clock 6 VSS S Supply voltage ground VSS S Supply voltage ground 7 DAT0 I/O/PP Data Line [Bit 0] DO O/PP Data Out 8 DAT1 RSV Reserved Ai11728 |
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