基于ARM嵌入式系统的LED点阵屏设计  

Design of LED Lattice Screen Based on ARM Embedded System

作　　者：葛超[1] 张景春[1] 孙艳彬[1] 孙丽英[1] 朱艺[1] 

机构地区：[1]河北理工大学信息学院,河北唐山063009

出　　处：《液晶与显示》2010年第5期743-746,共4页Chinese Journal of Liquid Crystals and Displays

摘　　要：传统LED点阵屏控制系统常常采用8位或l6位的控制器,这些微处理器系统的运行速度慢、寻址能力低、功耗高,难以满足显示区域较大时刷新频率和稳定显示等方面的要求。针对上述问题,提出了一种基于ARM嵌入式的大型LED点阵屏显示系统设计方案。该系统使用ARM芯片内部的DMA控制器进行数据的传输和控制,节省了处理器取指和译指时间,从而能够在连续的读写操作中完成数据的传输,提高了数据传输的速度和效率。The traditional control system of LED lattice screen often uses 8bit or l6bit controller.It is difficult to meet the requirements of larger area display and stable refresh rate because of its slow operation,low addressing capacity and high power consumption.To resolve these problems above,this paper puts forward a way for large-scale LED lattice screen display system based on ARM embedded.The data can be transmitted and controlled by the inner DMA controller of the ARM chip.The fetch and translation time can be saved for the processor to transmit data continuously when reading and writing.The speed and efficiency of transmitting can be improved.

关 键 词：ARM LED DMA 并行总线 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]