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    • 10. 发明授权
    • Dual function clock signal suitable for host control of synchronous and asynchronous target devices
    • 双功能时钟信号适用于同步和异步目标器件的主机控制
    • US07308023B1
    • 2007-12-11
    • US10394843
    • 2003-03-21
    • James Leroy BlairTimothy Eric Giorgetta
    • James Leroy BlairTimothy Eric Giorgetta
    • H04L25/20
    • G06F1/22G06F1/04
    • A host device in a data communication system provides a dual-function clock/enable signal at a single output port shared by at least one asynchronous target device and at least one synchronous target device. In the asynchronous operating mode, the host device generates an asynchronous gated-clock signal that facilitates read/write functions of one or more selected asynchronous target devices. In the synchronous operating mode, the host device generates a synchronous clock-gate signal that facilitates read/write functions of one or more selected synchronous target devices. The target devices and the host device share both a common data bus and a common clock bus. The host device supplies the dual-function clock/enable signal on the common clock bus.
    • 数据通信系统中的主机设备在由至少一个异步目标设备和至少一个同步目标设备共享的单个输出端口处提供双功能时钟/使能信号。 在异步操作模式中,主机设备产生促进一个或多个所选异步目标设备的读/写功能的异步门控时钟信号。 在同步操作模式中,主机设备产生一个便于一个或多个所选同步目标器件的读/写功能的同步时钟门信号。 目标设备和主机设备共享公共数据总线和公共时钟总线。 主机设备在公共时钟总线上提供双功能时钟/使能信号。