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    • 10. 发明申请
    • SD SWITCHBOX IN A CELLULAR HANDSET
    • SD开关在一个细胞手册
    • US20110014951A1
    • 2011-01-20
    • US12876129
    • 2010-09-04
    • Itay ShermanEyal BychkovYaron Segalov
    • Itay ShermanEyal BychkovYaron Segalov
    • H04M1/00
    • H04M1/0202G06F13/385H04L25/02Y02D70/122
    • A method for arbitrating between a host device and a cellular base band mode for use of a shared SD storage, including requesting, by a cellular base band modem from a host device, access to an SD storage, including writing an access request message, notifying the host device of the access request message, reading, by the host device, the access request message, granting, by the host device, the access request, including writing an access grant message, notifying the cellular base band modem of the access grant message, reading, by the cellular base band mode, the access grant message, holding an SD host bus in a busy state, thereby forcing the host device to hold and not access the bus, accessing, by the cellular base band modem, the SD storage, and upon completion of the accessing, removing the busy state from the SD host bus.
    • 一种用于在主机设备和用于共享SD存储器的蜂窝基带模式之间进行仲裁的方法,包括由蜂窝基带调制解调器从主机设备请求对SD存储器的访问,包括写入访问请求消息,通知 访问请求消息的主机设备,由主机设备读取访问请求消息,由主机设备授予访问请求,包括写入访问授权消息,通知蜂窝基带调制解调器访问许可消息 ,通过蜂窝基带模式读取访问许可消息,将SD主机总线保持在忙状态,由此迫使主机设备保持并不访问总线,由蜂窝基带调制解调器访问SD存储器 ,并且在完成访问时,从SD主机总线去除忙碌状态。