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    • 1. 发明授权
    • Integrated multi-port repeater having shared resources
    • 具有共享资源的集成多端口中继器
    • US5557633A
    • 1996-09-17
    • US385219
    • 1995-02-08
    • David StaabNader Vijeh
    • David StaabNader Vijeh
    • G01R29/027H03K5/02H03K5/156H03K19/0185H04L12/44H04L12/46H04L25/02H04L25/08H04L25/49H04B17/02
    • H04L25/0272G01R29/0273H03K19/018578H03K5/023H03K5/156H04L12/44H04L12/46H04L25/08H04L25/085H04L25/4904
    • A discrete integrated repeater device and port MAU/AUI functions shares resources among its several ports. The device includes a single multi-bit free running counter providing preselected timing intervals to a plurality of latches. A signal undergoing measurement clears the latch while a preselected timing signal sets the latch. Receipt of a timing signal at a set latch indicates success or failure of some particular condition under test. The device satisfies an IEEE 802.3 specification for execution of a link integrity test. The device is also able to selectively disable or enable the link integrity test function for particular ports. A plurality of latches, one associated with each port, is set upon carrier sense detection at the particular port. A token passing mechanism implemented with a daisy chained line coupled to each latch enables a polling of each latch to provide carrier sense information about each port in a serial format. The device shares a single PLL among all its ports by producing a logical sum of carrier sense inputs to enable activation of the PLL. A collision indication signal will override operation of the PLL to ensure data integrity and to allow the PLL to reacquire lock on its reference clock.
    • 一个离散集成中继器设备和端口MAU / AUI功能在其多个端口之间共享资源。 该设备包括单个多位自由运行计数器,为多个锁存器提供预选的定时间隔。 正在进行测量的信号会在预选的定时信号设置锁存器时清除锁存器。 在设置的锁存器处接收定时信号指示被测试的一些特定条件的成功或失败。 该设备满足用于执行链路完整性测试的IEEE 802.3规范。 该设备还能够选择性地禁用或启用特定端口的链路完整性测试功能。 多个锁存器,一个与每个端口相关联的锁存器被设置在特定端口的载波检测检测。 通过耦合到每个锁存器的菊花链链路实现的令牌传递机制使得能够轮询每个锁存器以串行格式提供关于每个端口的载波感测信息。 该器件通过产生载波检测输入的逻辑和来实现PLL的激活,在其所有端口中共享单个PLL。 冲突指示信号将覆盖PLL的操作,以确保数据完整性,并允许PLL重新获取其参考时钟上的锁定。
    • 2. 发明授权
    • Integrated multi-port repeater having shared resources
    • 具有共享资源的集成多端口中继器
    • US5265124A
    • 1993-11-23
    • US595061
    • 1990-10-10
    • David StaabNader Vijeh
    • David StaabNader Vijeh
    • H04B3/36G01R29/027H03K5/02H03K5/156H03K5/26H03K19/0185H04L12/28H04L12/44H04L12/46H04L25/02H04L25/08H04L25/49
    • H04L12/44G01R29/0273H03K19/018578H03K5/023H03K5/156H04L12/46H04L25/08H04L25/085H04L25/4904H04L25/0272
    • A discrete integrated repeater device and port MAU/AUI functions shares resources among its several ports. The device includes a single multi-bit free running counter providing preselected timing intervals to a plurality of latches. A signal undergoing measurement clears the latch while a preselected timing signal sets the latch. Receipt of a timing signal at a set latch indicates success or failure of some particular condition under test. The device satisfies an IEEE 802.3 specification for execution of a link integrity test. The device is also able to selectively disable or enable the link integrity test function for particular ports. A plurality of latches, one associated with each port, is set upon carrier sense detection at the particular port. A token passing mechanism implemented with a daisy chained line coupled to each latch enables a polling of each latch to provide carrier sense information about each port in a serial format. The device shares a single PLL among all its ports by producing a logical sum of carrier sense inputs to enable activation of the PLL. A collision indication signal will override operation of the PLL to ensure data integrity and to allow the PLL to reacquire lock on its reference clock.
    • 一个离散集成中继器设备和端口MAU / AUI功能在其多个端口之间共享资源。 该设备包括单个多位自由运行计数器,为多个锁存器提供预选的定时间隔。 正在进行测量的信号会在预选的定时信号设置锁存器时清除锁存器。 在设置的锁存器处接收定时信号指示被测试的一些特定条件的成功或失败。 该设备满足用于执行链路完整性测试的IEEE 802.3规范。 该设备还能够选择性地禁用或启用特定端口的链路完整性测试功能。 多个锁存器,一个与每个端口相关联的锁存器被设置在特定端口的载波检测检测。 通过耦合到每个锁存器的菊花链链路实现的令牌传递机制使得能够轮询每个锁存器以串行格式提供关于每个端口的载波感测信息。 该器件通过产生载波检测输入的逻辑和来实现PLL的激活,在其所有端口中共享单个PLL。 冲突指示信号将覆盖PLL的操作,以确保数据完整性,并允许PLL重新获取其参考时钟上的锁定。
    • 5. 发明授权
    • Selectable repeater port reconnection method and apparatus
    • 可选择的中继器端口重新连接方法和装置
    • US5315590A
    • 1994-05-24
    • US594929
    • 1990-10-10
    • Nader VijehDavid Staab
    • Nader VijehDavid Staab
    • H04B3/36H03K5/02H03K5/156H03K19/0185H04L12/44H04L25/02H04L25/08H04L25/49
    • H03K5/023H03K19/018578H03K5/156H04L12/44H04L25/08H04L25/085H04L25/4904H04L25/0272
    • An apparatus and method for providing a selectable novel reconnection algorithm for a repeater partition state machine to use in reconnecting a partitioned port. The reconnection algorithm permits selection of one of a first or a second partitioning/reconnection algorithm from a set of partitioning/reconnection algorithms. The first partitioning/reconnection algorithm corresponds to the IEEE 802.3 Standard partitioning/reconnection algorithm. The second partitioning/reconnection algorithm reconnects a partitioned port only upon minimum duration collision-free transmit activity from a partitioned port. The apparatus includes a partition state machine responsive to a counter controlled by a signal indicating the particular partitioning/reconnection algorithm selected and a device for selecting the algorithm. The signal determines whether the counter responds to receive and transmit activity or only to transmit activity. When the counter times that the minimum duration of the appropriate activity has elapsed and the partition state machine has seen activity without a collision, the port is reconnected as appropriate.
    • 一种用于为中继器分区状态机提供可选择的新型重新连接算法以用于重新连接分区端口的装置和方法。 重新连接算法允许从一组分区/重新连接算法中选择第一或第二分区/重新连接算法中的一个。 第一个分区/重连接算法对应于IEEE 802.3标准分区/重连接算法。 第二个分区/重连接算法只有在分区端口的最短持续时间无冲突传输活动时才重新连接分区端口。 该装置包括分配状态机,其响应于由指示所选择的特定分区/重新连接算法的信号控制的计数器,以及用于选择算法的装置。 该信号确定计数器是否响应接收和传输活动,或仅传送活动。 当计数器经过适当活动的最小持续时间并且分区状态机已经看到活动而没有发生冲突时,该端口被适当地重新连接。