【摘要】 介绍了高速数字信号处理芯片ADMC401以及液晶显示模块MGLS12032A的基本性能和参数,分析了二者的时序特性和速度匹配问题。采用由D触发器74HC574和逻辑器件GAL16V8组成的接口电路,解决了高速数字信号处理芯片与低速液晶显示模块之间的速度匹配问题。提供了用ADSP21xx汇编语言编写的字母显示的程序代码及框图。最后探讨了该接口电路在电力系统无功补偿装置中的应用。试验表明该接口电路可行、实用。更多还原

【Abstract】 The basic performance and parameters of high speed DSP(digital signal processor) chip ADMC401 and LCD module MGSL-12032A are introduced. Both their timing characteristics and speed matching problem are analyzed. The interface circuit which is made up of D flip-flop 74HC574 and logic device GAL16V8 is applied to solve the problem of speed matching between high-speed DSP chip and low-speed display control chip. Some subprograms based on ADSP-21xx complied language and program flow chart are given. The prospective application of this circuit in SVG(static var generator) equipment of power system is discussed. Experimentation shows that this circuit is feasible and practical.更多还原