摘要
介绍一种利用显示屏体中的列驱动电路,以可变长并串转换方式简化CPU数据处理的方法。该方法由于省却了CPU承担的数据循环移位操作,并在一个读周期内由硬件逻辑同时完成并串转换和数据输出,减少了CPU机时,从而显著提高了数据输出速度。
This paper introduced one method,which simplified the CPU dataprocessing by using the drive circuit on LED display board and by means of the length alterational parallel serial conversion. Because the method omitted thedata circular shift borne by CPU and completed data output and parallel serialconversion in one read cycle by means of hardware logic, it reduced the time of CPU and increased remarably data output speed.
出处
《微处理机》
2008年第5期144-146,149,共4页
Microprocessors
关键词
VHDL语言
并串转换
数据处理
VHDL Language
Parallel - serial Conversion
Data Processing