岩心扫描仪中VGA显示接口的实现

The Realization of VGA Display Interface in CISS

提出了以FPGA为主控制器,结合D/A转换器和帧存储器实现VGA显示接口的设计方案,给出了系统连接框图,介绍了D/A转换芯片ADV7125、帧存储器AL422B的基本特点和VGA显示的基本原理以及访问帧存的实现方法。还给出了VGA同步时序的仿真波形。本设计实现方法和器件选型都具有较典型的代表意义。

One method using FPGA as main controller cooperating with D/A converter and FIFO to realize VGA display interface is proposed in this article, The system interconnect is given. The ADV7125,AIA22B.VGA format and the realization of memory access are introduced. The simulation waveform is also shown. The design in this article is typical and fit for many uses.