用CPLD构建红外遥控电路及其仿真  

The construction of circuit of infrared remote-control transmit with CPLD

作　　者：侯继红[1] 

机构地区：[1]广州科技贸易职业学院,广东广州511442

出　　处：《广州大学学报（自然科学版）》2011年第4期73-76,共4页Journal of Guangzhou University:Natural Science Edition

摘　　要：为了实现基于CPLD的红外遥控发射电路，文章在分析CX6122芯片红外遥控编码原理基础上，提出了用VHDL语言有限状态机构建该电路，用计数器、译码器和寄存器在状态机的St0-St4的协调控制下完成按键扫描，St5按键值的锁存，数据调制控制器在St6-St8协调下完成遥控信号引导码、数据码编码及调制．该电路经过仿真及硬件测试验证，能够实现遥控器的功能．An infrared remote-control transmit circuit was designed, which was based on CPLD. Analysis of CX6122 chip for infrared remote-control signal code and implementation with VHDL finite state machine were mentioned. Scan key and latch of St5 key value were realized by the state machine of St0- St4 coordinated with the counter, decoder and register, the guide code and data code can be modulated by controller under St6 - St8 states. Simulation and hardware experiment indicate that the function of infrared remote-control can be achieved by the circuit.

关 键 词：红外遥控 状态机 硬件描述语言 可编程逻辑器件 

分 类 号：TN402[电子电信—微电子学与固体电子学] TN914.2