首页> 外国专利> serial data bus for different operating modes (sci, spi and buffered spi) and procedures for serial peripherieschnittstelle in a serial databus.

serial data bus for different operating modes (sci, spi and buffered spi) and procedures for serial peripherieschnittstelle in a serial databus.

机译：用于不同操作模式（sci，spi和缓冲spi）的串行数据总线，以及串行数据总线中串行外围设备的程序。

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摘要

The aim of the Chrysler Collision Detector (CCD) Bus System is to allow multiple microprocessors to easily communicate with each other over a common pair of wires (called a bus) using a scheme similar to a telephone party line. All microprocessors connected to the bus are able to receive all messages transmitted on the bus. Any microprocessor with a message to transmit on the bus waits until any current user is finished before attempting to use it. Whenever the bus is available, its use is allocated on a first-come, first-serve basis (i.e., whichever microprocessor first begins transmitting its message on the bus after any previous message finishes gets the use of the bus). If, however, multiple microprocessors attempt to begin transmitting their messages on the bus at exactly the same time, then the message with the highest priority wins the use of the bus. All messages have unique message priority values and each message is transmitted by only one microprocessor. The subject invention provides the ability to communicate with a SCI port, a SPI port or a buffered SPI port. This allows communication with any device configured with any one of these ports, all on the same bus. In a communication system for the transmission of messages through a data bus between one or more user microprocessors coupled to the data bus, the user microprocessors having either a serial communications interface (SCI) port or a serial peripheral interface (SPI) port along with a clock port and an input/output port, the user microprocessors being coupled ton the data bus by a bus interface integrated circuit, a method to transmit and receive data in an SPI mode of operation in conjunction with a method of arbitrating data on the data bus, and a method to transmit and receive data in a buffered serial peripheral interface (SPI) mode of operation in conjunction with a method of arbitrating data on the data bus.

机译：克莱斯勒碰撞检测器（CCD）总线系统的目的是允许多个微处理器使用类似于电话线的方案，通过一条共用的一对电线（称为总线）轻松地相互通信。连接到总线的所有微处理器都能够接收在总线上传输的所有消息。任何带有要在总线上传输的消息的微处理器都将等到任何当前用户完成后再尝试使用它。只要有总线可用，就按先到先得的原则分配其使用（即，在任何先前的消息完成后，只要微处理器首先开始在总线上传输其消息，就可以使用该总线）。但是，如果多个微处理器试图在同一时间开始在总线上传输其消息，则优先级最高的消息将赢得总线的使用。所有消息均具有唯一的消息优先级值，并且每个消息仅由一个微处理器发送。本发明提供了与SCI端口，SPI端口或缓冲的SPI端口进行通信的能力。这允许与配置有这些端口中任何一个的任何设备进行通信，所有这些设备都在同一条总线上。在用于通过数据总线在一个或多个耦合到数据总线的用户微处理器之间传输消息的通信系统中，用户微处理器具有串行通信接口（SCI）端口或串行外围设备接口（SPI）端口以及一个串行通信接口。时钟端口和输入/输出端口，用户微处理器通过总线接口集成电路与数据总线耦合，以SPI操作模式传输和接收数据的方法，以及在数据总线上仲裁数据的方法以及在缓冲串行外围接口（SPI）操作模式下发送和接收数据的方法，以及在数据总线上仲裁数据的方法。

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公开/公告号DE3789728D1

专利类型
公开/公告日1994-06-09

原文格式PDF
申请/专利权人 CHRYSLER CORP. HIGHLAND PARK MICH.;
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申请/专利号DE19873789728T
发明设计人 MIESTERFELD FREDERICK O.R. TROY MICHIGAN 48084;FASSNACHT RONALD E. ROCHESTER MICHIGAN 48063;MCCAMBRIDGE JOHN M. NORTHVILLE MI 48167;NASIADKA JERRY M. WARREN MICHIGAN 48093;
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申请日1987-05-22
分类号G06F13/36;H04L12/40;G06F13/38;G06F13/42;F02D41/26;G06F13/374;
国家 DE
入库时间 2022-08-22 04:36:39

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