详细描述了主控制器和SD卡间用SPI总线相互握手机通信的表征和方法及SPI总线拓扑的信息。-Detailed descr iption of the host controller and SD card using the SPI bus between each grip characterization and mobile communications methods and SPI bus topology.

English datasheet. MVSILICON AU7843 USB HOST MP3 WMA DECODER SOC 2008-7-7 V1.0 LQFP64 highly integrated SOC for MP3/WMA player, AU7843 integrates MCU, MP3/WMA decoder, USB Host controller, SD/MMC card controller, a 16-bit audio decoder and an