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在多控制器、多时钟的复杂系统中,能否解决多种信号的同步问题,是决定该信号系统成败的关键。针对设计一个多控制器、多时钟的数字量输出模块时,遇到的信号同步问题,提出了自己的解决方案:采用双锁存器法解决单数据位的控制信号的同步问题,采用异步FIFO与全握手协议相结合的方法解决多数据位信号的同步问题,该同步方法已经用于某测试系统的实际工作,完全达到了预期的设计效果。
In multi-controller, multi-clock complex systems, the ability to solve the synchronization of multiple signals is the key to determining the success of the signal system. Aiming at the problem of signal synchronization encountered when designing a multi-controller and multi-clock digital output module, this paper proposes its own solution: the double latch method solves the synchronization problem of single data bit control signal, adopts asynchronous FIFO And full handshake protocol to solve the multi-bit signal synchronization method, the synchronization method has been used for the actual work of a test system, fully achieved the desired design results.