摘要
DSP是一种高性能的数字信号处理器,具有快速的计算能力和强大的信息处理能力。针对液晶显示控制系统中遇到的大量实时数据的高速传输问题,文中介绍了一种基于高速DSP控制液晶显示的方法。首先介绍了TMS320F240DSP的主要特点及SED1335液晶显示控制器的原理与使用,然后在此基础上讨论了DSP与液晶显示屏之间采用数字I/O口模拟时序的硬件接口设计方案,给出了具体的软件实现方法,最终实现了DSP与液晶显示控制器SED1335的良好接口,并在实际系统应用中取得了成功。
DSP is a high-powered digital signal processor and possesses fast computation capability and strong information processing capability. Aiming at the high-speed transmission problem of plentiful real-time data in LCD control system,this paper introduces a means of controlling LCD based on high-speed DSP.Firstly the paper presents the main features of TMS320F240 DSP and principle and application of SED1335 LCD controller,then discusses the hardware interface design scheme about using digital I/O ports to simulate time sequence between DSP and LCD,and gives the specific software implementation method.This means ultimately realizes good interface between DSP and LCD controller SED1335 and achieves success in the practical system application.
出处
《微机发展》
2005年第2期126-129,共4页
Microcomputer Development
