基于通用I/O接口的CAMAC总线控制单元简化设计

Simplified Design of CAMAC Bus Control Unit Based on General I/O Interface

为了减小系统规模,有效降低成本,分析了CAMAC标准总线信号构成,用分离TTL逻辑电路产生了6类总线信号,实现了CAMAC总线控制单元简化设计,详细说明了硬件电路设计原理和软件子程序设计。该CAMAC总线控制单元可以由通用I/O接口实现总线的读写控制。应用结果表明,该设计稳定可靠,方便进行模件检测或搭建小型应用系统。

In order to decrease the cost and reduce dimension,the standard signals of CAMAC bus are analyzed.6 type bus signals are produced by adopting TTL logic circuit.Hence the simplified design of CAMAC bus control unit is realized.Electro circuit principle and subprogram is introduced in detail.In this control unit,the Bus Control right can be obtained via operating the general I/O interface.Its stability and reliability are proved by application and can be used in module testing and system miniaturizing too.