基于CPLD的液晶显示屏与嵌入式处理器的接口设计

Design of the interface between LCD and embedded processor based on CPLD

介绍了基于CPLD实现的TFT液晶显示屏与ARM嵌入式处理器接口设计方案。在对S3C2440A内置TFT-LCD控制器和LQ035Q7DH01液晶显示屏的时序详细分析基础上,提出了对CPLD的功能设计要求,并使用VHDL语言进行设计描述、功能仿真和时序分析。这种灵活的设计方案提高了系统的兼容性,降低了开发成本。

This paper introduces the design of the interface between TFT-LCD and ARM embedded processor based on CPLD. It analyses the timing of TFT-LCD controller embedded in S3C2440A and LQ035Q7DH01 LCD, brings forward the designing requirements of CPLD＇s function, then describes the design, emulates the function and analyses the timing in VHDL. This flexible design improves the system＇s compatibility and reduces the cost of development.