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数据搜索系统，热门电子元器件搜索 |
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PCI7421 数据表(PDF) 53 Page - Texas Instruments |
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PCI7421 数据表(HTML) 53 Page - Texas Instruments |
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53 / 298 page  2−27 Table 2−16. SD/MMC Terminals If any SD/MMC terminal is unused, then the terminal may be left floating. TERMINAL DESCRIPTION I/O INPUT OUTPUT PU/ POWER EXTERNAL NAME NO. DESCRIPTION I/O TYPE INPUT OUTPUT PU/ PD POWER RAIL EXTERNAL COMPONENTS MC_PWR_CTRL_0 MC_PWR_CTRL_1 F01 F02 Media card power control for flash media sockets. O LVCO1 Power switch or FET to turn power on to FM socket SD_CD E03 SD/MMC card detect. This input is asserted when SD/MMC cards are inserted. I LVCI1 PU2 VCC SD_CLK J05, G05 SD flash clock. This output provides the SD/MMC clock, which operates at 16 MHz. I/O TTLO2 SW2 VCC SD_CMD J03, F03 SD flash command. This signal provides the SD command per the SD Memory Card Specifications. I/O TTLI2 TTLO2 SW2 VCC SD_DAT3 SD_DAT2 SD_DAT1 SD_DAT0 J02, H05 J01, G03 J06, G02 H03, G01 SD flash data [3:0]. These signals provide the SD data path per the SD Memory Card Specifications. I/O TTLI2 TTLO2 SW2 VCC SD_WP H07 SD write protect data. This signal indicates that the media inserted in the socket is write protected. I TTLI2 SW2 VCC Table 2−17. Memory Stick/PRO Terminals If any Memory Stick/PRO terminal is unused, then the terminal may be left floating. TERMINAL DESCRIPTION I/O INPUT OUTPUT PU/ POWER EXTERNAL NAME NO. DESCRIPTION I/O TYPE INPUT OUTPUT PU/ PD POWER RAIL EXTERNAL COMPONENTS MC_PWR_CTRL_0 MC_PWR_CTRL_1 F01 F02 Media card power control for flash media sockets. O LVCO1 Power switch or FET to turn power on to FM socket MS_BS F03 Memory Stick bus state. This signal provides Memory Stick bus state information. I/O TTLO2 SW2 VCC MS_CD F05 Media Card detect. This input is asserted when a Memory Stick or Memory Stick Pro media is inserted. I LVCI1 PU2 VCC MS_CLK G05 Memory Stick clock. This output provides the MS clock, which operates at 16 MHz. I/O TTLO2 SW2 VCC MS_DATA3 MS_DATA2 MS_DATA1 H05 G03 G02 Memory Stick data [3:1]. These signals provide the Memory Stick data path. I/O TTLI2 TTLO2 SW2 VCC MS_SDIO (DATA0) G01 Memory Stick serial data I/O. This signal provides Memory Stick data input/output. Memory Stick data 0. I/O TTLI2 TTLO2 SW2 VCC |
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