IEEE1394物理层端口连接启动控制与环路测试

发布时间：2018-09-07 17:27

【摘要】：随着信息技术的发展,尤其是多媒体实时数据的传输需要,人们对数据传递的便捷性和速度的要求也越来越高,对数据传输的方式需求也越来越高。IEEE1394总线技术即是为应对此种情况而提出的,并在实际应用的过程中得到了飞速发展。IEEE1394作为一个工业标准的高速串行总线,最先定位是在多媒体应用方面,而在影音消费类电器领域,已成为一种事实上的连接标准,并广泛应用于数字摄像机,数字照相机、电视机机顶盒、家庭游戏机等设备。本文研究的是符合IEEE1394协议的物理层端口部分,是IEEE1394物理层芯片的一个子模块。它作为不同IEEE1394设备之间互连的接口,是IEEE1394总线协议的底层实现。此模块主要负责节点之间的连接启动、节点状态管理、数据及控制信号的传播、PHY包的产生与解析等。负责将数据从链路层发送到总线接口,以及将总线上接收的数据转发到其他连接的端口。本文核心工作是基于IEEE1394-2008协议标准,设计了端口启动控制模块并验证其功能正确性。首先对IEEE1394协议结构进行了概述,分析了端口部分的功能需求,并在此基础上进行了端口启动控制模块的设计。端口启动控制模块主要包括了连接检测、速度检测和速度协商、端口同步和端口环路测试等过程。在文中分别对这几个部分的工作原理、工作过程以及实现方法进行了详细描述。其次为了能够清晰方便的去验证所设计的端口启动模块,在文中有针对性的设计了端口监控模块。提出了一种能够快速识别总线信息、监测总线以及控制总线的系统,主要包括了信号采集和激励注入两大功能。通过信号采集器,对端口中关键信号进行采集,实现对连接过程的监测;通过激励注入器,将控制信息发送给相应的控制模块,可实现对端口的控制。此模块可以对端口在连接中的状态进行监测和控制,弥补了现有测试设备的不足,并简化了测试项的设计。通过前期的虚拟平台仿真以及后期对大量监控数据的分析结果来看,本文所设计的端口启动控制模块能够实现端口从断开到连接的启动过程,对端口的连接检测、速度协商、端口同步及环路测试等主要功能的控制与协议要求相符,端口能够以S800、S400、S200等速度进行数据传输,对IEEE1394芯片的研究工作具有一定的参考意义和实用价值。
[Abstract]:With the development of information technology, especially the need of multimedia real-time data transmission, people demand more and more convenience and speed of data transmission. The demand for data transmission mode is also higher and higher. IEEE 1394 bus technology is proposed to deal with this situation, and in the process of practical application, .IEEE1394 has been rapidly developed as an industrial standard of high-speed serial bus. In the field of video and audio consumer appliances, it has become a de facto connection standard, and has been widely used in digital cameras, TV set-top boxes, home games and other devices. This paper studies the physical layer port which conforms to IEEE1394 protocol and is a sub-module of IEEE1394 physical layer chip. As the interface between different IEEE1394 devices, it is the underlying implementation of IEEE1394 bus protocol. This module is mainly responsible for connection startup between nodes, node state management, data and control signal propagation and PHY packet generation and analysis. Responsible for transmitting data from the link layer to the bus interface and forwarding data received on the bus to other connected ports. The core work of this paper is to design port startup control module based on IEEE1394-2008 protocol standard and verify its function correctness. Firstly, the structure of IEEE1394 protocol is summarized, and the functional requirements of port part are analyzed. Based on this, the port startup control module is designed. Port start control module includes connection detection, speed detection and speed negotiation, port synchronization and port loop testing. In this paper, the working principle, working process and implementation method of these parts are described in detail. Secondly, in order to verify the port startup module clearly and conveniently, the port monitoring module is designed in this paper. A system which can quickly identify bus information, monitor bus and control bus is proposed, which mainly includes two functions: signal acquisition and excitation injection. The key signals in the port are collected by the signal collector to realize the monitoring of the connection process, and the control information is sent to the corresponding control module through the excitation injector, which can realize the control of the port. This module can monitor and control the state of the port in the connection, make up for the deficiency of the existing test equipment, and simplify the design of the test item. Through the previous virtual platform simulation and the analysis of a large number of monitoring data, the port startup control module designed in this paper can realize the starting process of the port from disconnection to connection, detect the connection of the port, and negotiate the speed. The control of the main functions such as port synchronization and loop testing meets the requirements of the protocol, and the port can transmit data at the speed of S800 / S400 / S200, which has certain reference significance and practical value for the research of IEEE1394 chip.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP336

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