基于QuartusⅡ9.0的MAX192控制器设计  

Design of the MAX192 Controller Based on QuartusⅡ9.0

作　　者：张小鸣[1] 张俊玲[1] 

机构地区：[1]常州大学信息科学与工程学院,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2014年第2期26-31,共6页Journal of Changzhou University：Natural Science Edition

摘　　要：为了减轻微处理器频繁控制A/D转换器转换时序与读取A/D转换结果的负担,提出了串行A/D转换器MAX192的设计方法。根据MAX192多通道顺序转换时序的特点,设计出基于QuartusⅡ9.0的8通道顺序转换控制器和8通道A/D转换结果寄存器阵列。每个通道配置64个结果寄存器,可满足64点周期采样的需要。采用VHDL语言和原理图相结合的方法实现MAX192控制器,并通过了时序仿真验证。仿真结果表明:基于QuartusⅡ9.0的MAX192控制器对8个通道信号顺序转换时,每个通道的转换时间与单通道单独转换相比减少了37.5%;结果寄存器可及时存储每次转换结果,便于微处理器及时读取A/D转换结果进行后续快速数字信号处理运算,提高了数据采集系统的实时性,具有工程应用价值。In order to reduce the burden of frequently controlling A/D converter′s conversion timing and reading A/D conversion results frequently by microprocessor,the MAX192controller design method based on QuartusⅡ9.0is proposed.According to the characteristics of MAX192multi-channel conversion timing,8-channel order converter controller and 8-channel A/D conversion results registers′array is designed.64results registers are configured for each channel to meet the need of 64points periodic sampling.MAX192controller is realized by using VHDL language and schematic,and the timing simulation is passed.The simulation result shows that the average conversion time of each channel is decreased by 37.5%compared with that of single channel conversion when the multi-channel sequential conversions are controlled by MAX192controller based on QuartusⅡ9.0sample.Results registers are used to store the conversed results in time,to facilitate microprocessor to timely read the A/D conversion results for subsequent fast digital signal processing operations.The timeliness of data acquisition system is improved. It has application value in engineering.

关 键 词：A/D转换器 A/D控制器 多通道顺序控制器 结果寄存器 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]