公开(公告)号：US4736362A

公开(公告)日：1988-04-05

申请号：US759624

申请日：1985-07-26

申请人： Alan T. Clark ,  Arthur F. Lange

发明人： Alan T. Clark ,  Arthur F. Lange

IPC分类号： H04M11/00 ,  H04J3/16 ,  H04M3/00 ,  H04M11/06 ,  H04Q3/42 ,  H04Q11/04

CPC分类号： H04Q11/0428 ,  H04J3/1647

摘要： A multiplexer for use in a digital subscriber controller having a number of analog ports and digital ports which can be programmed via an external microprocessor to establish time-division multiplexed bidirectional data paths between three subscriber-selected ports designated as "sources" and three subscriber-selected ports designated as "destinations". Among the ports is a line-interface port having two 64 kilobit-per-second channels on which analog/digital data is received from and transmitted onto the network transmission line. Among the digital ports is a three-channel serial port and a two-channel microprocessor interface port. An analog port is also provided at which a variety of audio transducers may be connected. The data-routing multiplexer consists of three sections, each comprising a plurality of registers connected to a single internal bus on which time-division-multiplexed signals are generated and received by particular subscriber-selected registers, each register within a section serving as either a generator or a receiver for the internal bus for a particular digital channel. An extension of the internal bus is connected to the analog port. A set of three control registers stores the subscriber-selected sources and destinations. Control signals are generated therefrom which affect the subscriber-selected interconnection of registers within the data-routing multiplexer with the internal bus. The multiplexer facilitates maintenance and testing of the digital subscriber controller by permitting a loopback path to be established for a device connected to a port by simply designating a path having that port as both its source and destination.

摘要翻译： 一种用于具有多个模拟端口和数字端口的数字用户控制器的多路复用器，其可以经由外部微处理器来编程，以在被指定为“源”的三个用户选择端口和三个订户选择的端口之间建立时分多路复用的双向数据路径， 指定为“目的地”的选定端口。 其中端口是具有两个64千比特/秒信道的线路接口端口，模拟/数字数据从该信道接收并发送到网络传输线。 数字端口中有三通道串口和双通道微处理器接口。 还提供了可以连接各种音频换能器的模拟端口。 数据路由多路复用器由三个部分组成，每个部分包括连接到单个内部总线的多个寄存器，其上由特定用户选择的寄存器产生和接收时分多路复用的信号，每个寄存器用作一个 发生器或用于特定数字通道的内部总线的接收器。 内部总线的扩展连接到模拟端口。 一组三个控制寄存器存储用户选择的源和目的地。 由此产生控制信号，其利用内部总线影响数据路由多路复用器内的寄存器的用户选择的互连。 多路复用器通过简单地指定具有该端口作为其源和目的地的路径，允许为连接到端口的设备建立环回路径，从而便于维护和测试数字用户控制器。

公开(公告)号：US4635255A

公开(公告)日：1987-01-06

申请号：US759622

申请日：1985-07-26

申请人： Alan T. Clark ,  Hadi Ibrahim ,  Arthur F. Lange

发明人： Alan T. Clark ,  Hadi Ibrahim ,  Arthur F. Lange

IPC分类号： H04Q3/42 ,  H04L29/10 ,  H04M1/00 ,  H04M1/253 ,  H04M3/00 ,  H04Q11/04 ,  H04J3/00

CPC分类号： H04Q11/0428

摘要： A digital subscriber controller having a number of analog ports and digital ports which can be programmed via an external microprocessor to establish time-division multiplexed bidirectional data paths between three subscriber-selected ports designated as "sources" and three subscriber-selected ports designated as "destinations". Among the ports is a line-interface port having two 64 kilobit-per-second voice/data channels and a 16 kilobit-per-second data control channel. Among the digital ports is a three-channel serial interface port and a two-channel microprocessor interface port. An analog port is also provided at which a variety of audio transducers may be connected. The controller includes a line interface unit, a data link controller which processes data channel information present at the line interface unit, a main audio processor, a microprocessor interface, and a multiplexer which establishes the data paths selected by the subscriber.

摘要翻译： 具有多个模拟端口和数字端口的数字用户控制器，其可以经由外部微处理器来编程，以在被指定为“源”的三个用户选择的端口和被指定为“源”的三个订户选择的端口之间建立时分多路复用的双向数据路径， 目的地“。 其中端口是具有两个64千比特每秒的语音/数据信道和一个16千比特每秒数据控制信道的线路接口端口。 其中数字端口是三通道串行接口端口和双通道微处理器接口端口。 还提供了可以连接各种音频换能器的模拟端口。 控制器包括线路接口单元，处理线路接口单元上存在的数据信道信息的数据链路控制器，主音频处理器，微处理器接口和建立用户选择的数据路径的多路复用器。