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    • 17. 发明授权
    • Arbiter and bus system therefor
    • 仲裁器和总线系统
    • US06810456B2
    • 2004-10-26
    • US09822836
    • 2001-04-02
    • Jin-soo Kim
    • Jin-soo Kim
    • G06F1200
    • G06F13/362
    • An arbiter and bus system adopting the arbiter are provided. The bus system includes a bus request receiver, connected to a plurality of master devices, for receiving bus request inputs from the master devices, a priority level extractor for outputting priority level signals indicating predesignated priority levels corresponding to the master devices if the bus requests are input through the bus request receiver, and generating a priority level summation signal indicating all priority levels of the bus requests based on the output priority level signals, a priority output unit for outputting priority levels in order of decreasing priority based on the priority level summation signal generated by the priority level extractor, a priority mapper comprising a master device identifier output unit for extracting identifiers of the master devices submitting bus requests in order to output the extracted master device identifiers corresponding to the priority levels output from the priority output unit, and an arbitration circuit for granting access to a bus, to the master device corresponding to the identifier output from the priority mapper. Accordingly, an arbiter of a priority designation scheme implemented as a simple circuit and a bus system adopting the same arbiter are allowed.
    • 提供了采用仲裁器的仲裁和总线系统。 总线系统包括连接到多个主设备的总线请求接收器,用于从主设备接收总线请求输入;优先级提取器,用于如果总线请求是用于输出指示与主设备相对应的预定优先级的优先级信号 通过所述总线请求接收器输入,并且基于所述输出优先级信号,生成表示所述总线请求的所有优先级的优先级和求和信号;优先级输出单元,用于基于所述优先级和求和信号按优先级顺序输出优先级; 由优先级提取器生成的优先级映射器,包括主设备标识符输出单元,用于提取提交总线请求的主设备的标识符,以输出与从优先输出单元输出的优先级相对应的提取的主设备标识符,以及 授权访问仲裁电路 总线,对应于从优先级映射器输出的标识符的主设备。 因此,允许实现为简单电路的优先级指定方案的仲裁器和采用相同仲裁器的总线系统。
    • 18. 发明授权
    • Bus system having an address/control bus and a data bus, and a data transfer method thereof
    • 具有地址/控制总线和数据总线的总线系统及其数据传输方法
    • US06721836B2
    • 2004-04-13
    • US09794160
    • 2001-02-28
    • Jin-soo Kim
    • Jin-soo Kim
    • G06F1320
    • G06F13/362G06F13/423Y10S370/912
    • A bus arbitration system and a data transfer arbitration method, comprising (a) receiving bus requests from two or more master devices and arbitrating access to an address/control bus according to a predetermined arbitration algorithm, (b) receiving an access command packet containing information for data transfer preparation from the master device through the address/control bus in the order determined as a result of the arbitration and transmitting the received access command packet to a corresponding slave device, (c) receiving notification of transfer preparation completion of corresponding data from the slave device, (d) informing the master device of the start of data transfer, and (e) transferring data through the data bus. The slave devices may be high-speed devices such as synchronous DRAM (SDRAM). Bus efficiency is improved, as separate master devices can simultaneously and separately control the address/control bus and the data bus.
    • 一种总线仲裁系统和数据传输仲裁方法,包括:(a)根据预定的仲裁算法从两个或多个主设备接收总线请求并对地址/控制总线进行仲裁访问,(b)接收包含信息的访问命令包 用于通过地址/控制总线以由仲裁结果确定的顺序从主设备进行数据传输准备,并将接收到的访问命令包发送到相应的从设备,(c)接收来自 从设备,(d)通知主设备开始数据传输,以及(e)通过数据总线传送数据。 从设备可以是诸如同步DRAM(SDRAM)的高速设备。 总线效率得到改善,因为单独的主设备可以同时且单独地控制地址/控制总线和数据总线。
    • 20. 发明授权
    • Bus system and execution scheduling method for access commands thereof
    • 总线系统及其访问命令的执行调度方法
    • US06782439B2
    • 2004-08-24
    • US09774009
    • 2001-01-31
    • Jin-soo Kim
    • Jin-soo Kim
    • G06F1300
    • G06F13/36
    • A bus system and execution scheduling method used for the bus system are provided. The execution scheduling method used for the bus system includes the steps of (a) transmitting one or more access commands issuing from one or more master devices to corresponding slave devices; (b) storing the transmitted access commands; and (c) the slave devices executing the stored access commands in the order in which execution preparation of access commands is completed. According to the method, the order of execution of the access commands is adjusted, thereby providing a bus system having improved data processing speed and the execution scheduling method thereof.
    • 提供了一种用于总线系统的总线系统和执行调度方法。 用于总线系统的执行调度方法包括以下步骤:(a)将从一个或多个主设备发出的一个或多个接入命令发送到对应的从设备; (b)存储发送的访问命令; 以及(c)从属设备以完成访问命令的执行准备的顺序执行存储的访问命令。 根据该方法,调整访问命令的执行顺序,从而提供具有改善的数据处理速度的总线系统及其执行调度方法。