二、接口功能状态母线系统标准用状态图来表达各接口功能所具有的能力、所起的作用和各功能状态之间发生变迁的条件,状态图是分析母线系统的辑逻时序,是设计母线接口电路最主要的依据.今摘要说明. (一)源握手接口功能SH 源握手功能使得仪器接口具有发送多线消息的能力.保证多线消息的正确传递,SH功能包含有6个状态. 1.源空闲态SIDS:在本状态,接口的SH功能 Second, the interface function status bus system standard state diagram to express the capabilities of each interface functions, the role played by the state and the functional state of the transition between the conditions of the state diagram is to analyze the bus system logic timing is the design bus The main basis of the interface circuit. Abstract: (1) source handshake interface function SH source handshake makes the instrument interface has the ability to send multi-line messages to ensure the correct transmission of multi-line messages, SH function contains six states. Source SID: In this state, the SH function of the interface