公开(公告)号：US5604735A

公开(公告)日：1997-02-18

申请号：US440088

申请日：1995-05-12

申请人： Frank H. Levinson ,  Mark J. Farley ,  Minh Q. Vu ,  Calvin P.-K. Leung

发明人： Frank H. Levinson ,  Mark J. Farley ,  Minh Q. Vu ,  Calvin P.-K. Leung

IPC分类号： H04L12/52 ,  H04L12/56 ,  H04Q11/04

CPC分类号： H04L49/351 ,  H04L12/52 ,  H04L49/101 ,  H04L49/205 ,  H04L49/25 ,  H04L49/254

摘要： The present invention provides an improvement in circuit switching for a network comprising a switching apparatus including a plurality of transceivers for interfacing directly with a like plurality of nodes. Each of the transceivers has a receive and transmit through port for passing data to and from nodes. Transmitted data includes a connect/disconnect sequence, a first wait sequence, and user data. The switching apparatus further includes circuitry for isolating each transceiver so as to loop back data when not in use and a switching matrix for directly connecting any pair of transceivers. Each of the transceivers includes circuitry for detecting a connect and disconnect sequence and an interface for connection to a serial asynchronous receiver to derive node requests, routing data, priority and other information from the connect sequence detected at the transceiver. Derived switch configuration requests are processed by a node route control state machine, with each node route control state machine integrated in a bus architecture for configuring the matrix switch. A bus arbitration state machine controls the bus architecture servicing bus requests and providing bus grants for the transfer of routing information to switch control logic and a command sequencer. The requesting node may set a priority for a connection request, queue a connection request or alternatively request data from the switch controller micro-controller core.

摘要翻译： 本发明提供了一种用于网络的电路交换的改进，包括包括用于直接与相似多个节点进行接口的多个收发器的交换设备。 每个收发器具有接收和发送端口，用于将数据传送到节点和从节点传送数据。 发送的数据包括连接/断开序列，第一等待序列和用户数据。 开关装置还包括用于隔离每个收发器以便在不使用时回送数据的电路和用于直接连接任何一对收发器的交换矩阵。 每个收发器包括用于检测连接和断开序列的电路以及用于连接到串行异步接收器的接口，以从在收发器处检测到的连接序列导出节点请求，路由数据，优先级和其他信息。 派生交换机配置请求由节点路由控制状态机处理，每个节点路由控制状态机集成在总线架构中，用于配置矩阵切换。 总线仲裁状态机控制总线架构服务总线请求，并提供总线授权，用于将路由信息传输到交换机控制逻辑和命令定序器。 请求节点可以设置连接请求的优先级，对连接请求进行队列，或者替代地从交换机控制器微控制器核心请求数据。