AD558可将输入的数字量（8位）转化成0～2.56V的模拟电压量；用CPLD器件产生四种循环变化的数据量：-The input digital quantity (8) AD558 can be converted into an analog voltage of 0 ~ 2.56V amount the CPLD device generates four kinds of cyclic changes in the amount of data:

此程序基于VHDL语言，利用CPLD来实现交通的控制功能，-This program is based on the VHDL language, the use of CPLD to implement traffic control functions,

在ccs开发环境下的DSP TMS320F2812开发板CPLD例程3-In the ccs development environment DSP TMS320F2812 development board CPLD routines 3