两类实现ARM系统VGA显示设计的对比

Comparision of Two Types Realization for ARM System VGA Display Design

ARM系统的VGA显示主流方案直接利用Video DAC来实现,同时也出现了另外一种利用FPGA或者CPLD来实现ARM系统VGA显示的方案,且其视频转换效果较第一种明显提高。新的设计方案稍加改进就可以实现手机等其他嵌入式系统的VGA输出。本文阐述了两类设计方案,并且给出了测试结果和对比分析。

Mainstream solution of VGA display in ARM system directly uses Video DAC at the moment.Another solution using FPGA or CPLD has arisen,and the video transition effect is significantly improved.After simple modification,the new solution can achieve VGA outputs of mobile phones and other embedded systems.Two solutions are described.Test results and the comparision analysis are given.