基于DSP和CPLD的液晶显示控制器的设计

Design of LCD Controller Based on DSP and CPLD Chip

介绍了一种基于DSP TMS320VC33和CPLD的液晶显示控制器的实现方法,利用TMS320VC33实现对显示数据的接收及处理,用一片CPLD芯片XC95288XL实现译码、显示时序的产生、显存的读写轮换控制等功能;该设计方法可以实现系统的快速性,并且CPLD产生的时序具有很好的可重用性;应用结果表明,该方案可以很好的实现文字、图形等的显示,具有一定的实用性和推广价值。

A method of designing LCD controller based on DSP TMS320VC33 and CPLD chip is introduced. Realizing the function such as receiving and dealing with the data for display on LCD with TMS320VC33, and realizing the function such as encoding, sequence control, display control and so on with only one CPLD chip named XC95288XL. The method discussed in this paper can make the system more quickly and the sequence achieved by CPLD can well used in other system. It is proved that the display of words and graphics can be well realized. The technology and methods adopted in the system are practical and worthy of using abroad.