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热词
    • 6. 发明授权
    • Method for communicating between a microprocessor and an interface
circuit
    • 用于在微处理器和接口电路之间进行通信的方法
    • US5671375A
    • 1997-09-23
    • US578763
    • 1995-12-26
    • Troy L. StockstadMatthew F. BacchiMartin J. Brown
    • Troy L. StockstadMatthew F. BacchiMartin J. Brown
    • H02J7/00G06F13/00
    • H02J7/0004H02J7/0026
    • A protocol between a microprocessor (21) and an interface circuit (11). The interface circuit (11) transmits an enable signal (124) to the microprocessor (21). Upon receiving the enable signal (124), the microprocessor (21) transmits a set of pulses of a window signal (125) to the interface circuit (11), which in turn provides the microprocessor (21) with information concerning a circuit element (36) through a data signal (127). The microprocessor (21) initiates a command by transmitting a pulse of a command signal (126) to the interface circuit (11). The interface circuit (11) accepts and executes the command only if a predetermined chronological condition between the pulse of the command signal (126) and a corresponding pulse of the window signal (125) is satisfied. The microprocessor (21) identifies a malfunctioning interface circuit (11) by timing the enable signal (124) received from the interface circuit (11).
    • 微处理器(21)和接口电路(11)之间的协议。 接口电路(11)向微处理器(21)发送使能信号(124)。 一旦接收到使能信号(124),微处理器(21)将窗口信号(125)的一组脉冲发送到接口电路(11),接口电路(11)又向微处理器(21)提供关于电路元件 36)通过数据信号(127)。 微处理器(21)通过向接口电路(11)发送命令信号(126)的脉冲来发起命令。 仅当满足命令信号(126)的脉冲和窗口信号(125)的对应脉冲之间的预定时间顺序条件时,接口电路(11)才接受并执行该命令。 微处理器(21)通过定时从接口电路(11)接收的使能信号(124)来识别故障接口电路(11)。