设计DSP应用系统时实现硬等待的方法  

The method of realizing hard wait when designing the DSP application systems

作　　者：王瑞峰[1] 

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070

出　　处：《自动化与仪器仪表》2007年第6期28-29,35,共3页Automation & Instrumentation

摘　　要：DSP与外部存储器和I/O接口的速度匹配是在设计DSP应用系统时必须解决的一个问题。ADSP2106X支持软等待、硬等待和软、硬等待相结合等四种等待模式。硬等待能够实现较长时间等待,而且有利于对放在同一个分组空间的需要不同等待时间的多个外设实现最优等待控制。本文讨论了三种实现硬等待电路的方法,对ADSP2106X应用系统设计具有很好的参考价值。The speed matching of DSP and external memories or I/O interfaces is a problem that must be solved when designing the DSP application systems. ADSP2106X supports four kinds of wait mode such as soft wait, hard wait and association wait of soft wait with hard wait. Hard wait can realize longer wait, and is beneficial to realize the optimal wait control for many external memories or I/O interfaces that are in the same group space and need different wait time. This paper discusses three methods for realizing hard wait circuits, this has very good reference value for designing the ADSP2106X application systems.

关 键 词：ADSP2106X 软等待 硬等待 单稳态触发器 定时器 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]