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公开(公告)号：US4730251A
公开(公告)日：1988-03-08
申请号：US791884
申请日：1985-10-28
申请人： David E. Aakre , Douglas J. Abrahamson , Neil C. Berglund , Vincent A. Bettermann , Lloyd S. Heim , Kenneth A. Moe
发明人： David E. Aakre , Douglas J. Abrahamson , Neil C. Berglund , Vincent A. Bettermann , Lloyd S. Heim , Kenneth A. Moe
CPC分类号： G06F12/0661
摘要： An automatic address assignment system has a plurality of I/O devices coupled to a bus. Each device contains a unique machine-readable identifier which is used to select the device for address assignment. The identifier is a binary bit string. Each bit position in the bit string is selected by the host in a serial manner with the host specifying which binary value is being solicited. All devices whose identifier digit matches the solicited value respond positively and remain in contention for address assignment. The other devices will not respond and drop out of contention for address assignment until the sequence is restarted from the first bit. After the bit sequence is completed, the address for that device is bused to the device, and the sequence is restarted from the first bit until all devices have been assigned an address.
摘要翻译： 自动地址分配系统具有耦合到总线的多个I / O设备。 每个设备都包含一个独特的机器可读标识符，用于选择用于地址分配的设备。 标识符是二进制位串。 主机以串行方式选择位串中的每个位位置，主机指定要求哪个二进制值。 标识符数字与被请求值相匹配的所有设备都会积极响应，并保持争用地址分配。 其他设备不会响应并退出地址分配的争用，直到序列从第一个位重新启动。 在比特序列完成后，该设备的地址被引用到设备，并且从第一个位重新启动序列，直到所有设备都被分配了一个地址。
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公开(公告)号：US4782300A
公开(公告)日：1988-11-01
申请号：US835674
申请日：1986-03-03
CPC分类号： H04L25/085
摘要： A differential transceiver transmission line integrity detector detects both open and short circuits in the transmission lines. The two transmission lines are terminated at both ends by selected impedances. A driver coupled to each of the transmission lines drives the lines with data signals. Signal levels on the lines are detected and compared with expected levels to generate line integrity indications. Both open and short conditions are detected and indicated by the line integrity indications.
摘要翻译： 差分收发器传输线完整性检测器检测传输线路中的开路和短路。 两条传输线通过选择的阻抗在两端终止。 耦合到每个传输线的驱动器用数据信号驱动线。 检测线路上的信号电平并将其与预期电平进行比较以产生线路完整性指示。 通过线路完整性指示检测和指示开放和短路条件。
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