uint32_t response = 0, count = 0, validvoltage = 0; uint32_t SDType = SD_STD_CAPACITY; /*!< CMD0: GO_IDLE_STATE ---*/// 准备发送CMD0,开始一系列的卡识别 /*!< No CMD response required */ SDIO_CmdInitStructure.SDIO_Argument = 0x0; SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CM...
uint32_t response = 0, count = 0, validvoltage = 0; uint32_t SDType = SD_STD_CAPACITY; /*!< CMD0: GO_IDLE_STATE ---*/// 准备发送CMD0,开始一系列的卡识别 /*!< No CMD response required */ SDIO_CmdInitStructure.SDIO_Argument = 0x0; SDIO_CmdInitStructure.SDIO_CmdIndex = SD_CM...
Suspend Temporarily halting the transfer of data TBD To Be Determined (in the future) Tuple Data blocks in a linked list or chain format VDD + Power supply VSS Power supply ground W/O Write Only WP Write Protect 附录A(标准化的) A.1 SD和SPI命令清单表4和表5中说明SD卡和SDIO设备在SPI和...
全速（full-speed）card支持SPI,1bitSD,和4bit传输模式，时钟范围在0到25MHZ。这种卡传输数据速率达到100Mb/s以上。第2种是low-speed SDIO 卡。这种卡仅需要支持SPI模式和1bitSD传输模式。4bit传输模式是可选的。另外。低速模式的SDIO卡支持的时钟范围是0到400KHZ.这种卡趋向支持低速模式的设备，如modems。GPS...
disable-wp; pinctrl-names = "default"; pinctrl-0 = <&sdmmc0_clk &sdmmc0_cmd &sdmmc0_det &sdmmc0_bus4>; status = "okay"; max-frequency = <50000000>; bus-width = <4>; cap-sd-highspeed; cap-sdio-irq; keep-power-in-suspend; non-removable; rockchip,default-sample-phase = <...
enum _mmc_boot_partition_wp_status { kMMC_BootPartitionNotProtected = 0U, kMMC_BootPartitionPwrProtected = 1U, kMMC_BootPartitionPermProtected = 2U } MMC card boot partition write protect status. More... enum mmc_access_partition_t { kMMC_AccessPartitionUserAera = 0U, kMMC_AccessPa...
写保护特性设置在卡的特殊数据区(WP_GRP_SIZE)。高容量SD存储卡不支持该命令 CMD29 ac [31:0]数据地址 R1b CLR_WRITE_PROT 如果卡有写保护功能,该命令清除指定组的写保护位。高容量SD存储卡不支持该命令 CMD30 adtc [31:0]写保护数据的地址 R1 SEND_WRITE_ PROT 如果卡有写保护功能,该命令要求卡发送...
wp-gpios = <&gpio4 22 GPIO_ACTIVE_HIGH>; keep-power-in-suspend; enable-sdio-wakeup; vmmc-supply = <®_sd1_vmmc>; status = "okay";}; &usdhc2 { pinctrl-names = "default", "state_100mhz", "state_200mhz"; pinctrl-0 = <&pinctrl_usdhc2>; pinctrl-1 = <&pinctrl_usdhc2...
全志A20-Vortex-C2核心板-SDIO配置手册V1.1 V1.1C o n f i d e n t i a l -1- Copyright ©2013Technology.All Rights Reserved.V Ａ２０核心板ＳＤＩＯ配置手册Ococci
Command, Clock, CD, WP, Pwr Ctrl (MIO or EMIO) LED control, bus voltage (EMIO) Interrupt or polling driven AHB master-slave interface operating at the CPU_1x clock rate Master mode for DMA transfers (with 1 KB FIFO) Slave mode for register accesses ...