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    • 4. 发明授权
    • Data routing using status-response signals
    • 使用状态响应信号的数据路由
    • US06513091B1
    • 2003-01-28
    • US09439586
    • 1999-11-12
    • Herman Lee BlackmonRobert Allen DrehmelKent Harold HaselhorstJames Anthony Marcella
    • Herman Lee BlackmonRobert Allen DrehmelKent Harold HaselhorstJames Anthony Marcella
    • G06F1314
    • G06F13/14
    • A method and apparatus for routing data between bus devices, where each bus device is connected to a centralized switch via a point-to-point bus connection. The plurality of point-to-point bus connections collectively form a system bus. After a command is issued on the system bus, each bus device responds to the issued command by transmitting an address status response to a response combining logic module. The response combining logic module identifies which of the bus devices responded with a positive acknowledgment to the issued command, then forwards a device identifier of the bus device responding with the positive acknowledgment to the switch. The switch uses the device identifier returned via the response combining logic to route the data transfer associated with the issued command.
    • 一种用于在总线设备之间路由数据的方法和设备,其中每个总线设备经由点到点总线连接连接到集中式交换机。 多个点到点总线连接共同形成系统总线。 在系统总线上发出命令之后,每个总线设备通过向响应组合逻辑模块发送地址状态响应来响应发出的命令。 响应组合逻辑模块识别哪个总线设备对所发出的命令进行肯定确认响应,然后将响应于肯定确认的总线设备的设备标识符转发给交换机。 交换机使用通过响应组合逻辑返回的设备标识符来路由与发出的命令相关联的数据传输。
    • 8. 发明授权
    • Method and system for multilevel arbitration in a non-blocking crossbar switch
    • 非阻塞交叉开关中多级仲裁的方法和系统
    • US06628662B1
    • 2003-09-30
    • US09450792
    • 1999-11-29
    • Herman Lee BlackmonRobert Allen DrehmelKent Harold HaselhorstJames Anthony Marcella
    • Herman Lee BlackmonRobert Allen DrehmelKent Harold HaselhorstJames Anthony Marcella
    • H04L12413
    • H04L49/254H04L49/101H04L49/201H04L49/205
    • A method and system for arbitrating data transfers between devices connected via electronically isolated buses at a switch. In accordance with the method and system of the present invention, multiple arbitration controllers are interposed between devices and a switch to which the devices are connected, wherein each of the multiple arbitration controllers are effective to select a data transfer operation and detect collisions between said selected data transfer operations. The switch is enabled for any selected data transfer operations between which collisions are not detected. The switch is also enabled for only one of the selected data transfer operations between which collisions are detected. Any selected data transfer operations for which the switch is not enabled are deferred. The deferred data transfer operations are prioritized within the multiple arbitration controllers, such that for a subsequent selection of the deferred data transfer operations, the switch is enabled for the deferred data transfer operations.
    • 一种用于仲裁在交换机通过电子隔离总线连接的设备之间的数据传输的方法和系统。 根据本发明的方法和系统,多个仲裁控制器被插在设备之间和设备连接的交换机之间,其中多个仲裁控制器中的每一个有效地选择数据传输操作并检测所选择的 数据传输操作。 对于未检测到碰撞的任何所选数据传输操作,该开关被使能。 只有在检测到碰撞之间的所选数据传输操作中的一个时,该开关也被使能。 任何未启用交换机的选定数据传输操作都会被延迟。 延迟数据传输操作在多个仲裁控制器内被优先排列,使得对于延迟数据传输操作的后续选择,该交换机被启用用于延迟数据传输操作。
    • 9. 发明授权
    • Processor-memory bus architecture for supporting multiple processors
    • 用于支持多个处理器的处理器 - 内存总线架构
    • US06557069B1
    • 2003-04-29
    • US09439189
    • 1999-11-12
    • Robert Allen DrehmelKent Harold HaselhorstRussell Dean HooverJames Anthony MarcellaGeorge Wayne Nation
    • Robert Allen DrehmelKent Harold HaselhorstRussell Dean HooverJames Anthony MarcellaGeorge Wayne Nation
    • G06F1300
    • G06F15/16
    • An internal processor/memory bus contains an address portion for transmitting addresses and commands, having a series of hierarchical uni-directional links between processors and local repeaters (ARPs), and between the ARPs and a central repeater (ASW). A command propagates from a requesting device to its local ARP, to the ASW. From the ASW, the command is broadcast to all devices on the bus by transmitting to all ARPs or directly attached memory, and from the ARPs to the devices. Preferably, the ASW globally arbitrates the address bus, and all commands propagate at pre-defined clock cycles through the bus. Preferably, each device on the bus independently signals a response via a separate response link running directly to a global collector, which collects all responses and broadcasts a single system-wide response back to the devices. In the preferred embodiment, addresses/commands and data are transmitted on essentially separate paths having different topologies, and at different times, and are arbitrated separately. The data portion of the network comprises a set of bi-directional links from the processors to a local data switch unit (DSW). The local DSW is further linked directly to memory via bi-directional links. No address is transmitted with the data; rather, a tag is transmitted which identifies the original command.
    • 内部处理器/存储器总线包含用于发送地址和命令的地址部分,在处理器和本地中继器(ARP)之间以及ARP和中央中继器(ASW)之间具有一系列分层单向链路。 命令从请求设备传播到其本地ARP,传送到ASW。 从ASW,该命令通过传输到所有ARP或直接连接的内存,从ARP广播到总线上的所有设备。 优选地,ASW全局仲裁地址总线,并且所有命令以预定义的时钟周期通过总线传播。 优选地,总线上的每个设备独立地通过直接运行到全局收集器的单独响应链路来发送响应,该收集器收集所有响应并将单个系统范围响应广播到设备。 在优选实施例中,地址/命令和数据在具有不同拓扑的基本上独立的路径上传输,并且在不同的时间被分开仲裁。 网络的数据部分包括从处理器到本地数据交换单元(DSW)的一组双向链路。 本地DSW通过双向链路进一步直接连接到存储器。 没有地址与数据一起传输; 而是发送标识原始命令的标签。