基于FPGA的单对复用LVDS发射端的设计

将分时复用技术与LVDS技术有机的结合在一起,采用FPGA实现了LCD(Liquid Crystal Display)和电容式触摸屏CTP(Capacity Touch Panel)的远距离控制,其中CTP通过I2C总线与主机进行通信。在发射端将控制LCD的28位并行RGB视频数据信号由FPGA转换成单对高速LVDS信号,通过单刀双掷模拟开关实现LVDS与I2C信号分时复用单对数据线,实现LVDS和I2C信号的传输,在接收端则完成相反的功能。主要研究发射端的设计与仿真,测试结果表明此系统可以完成LVDS与I2C信号的分时复用传输。

Design of Single Pair Multiplex LVDS Display Interface Based on FPGA

This paper introduces timedivision multiplexing into LVDS and implements remote control of LCD （Liquid Crystal Dis play）and CTP（Capacity Touch Panel） by using FPGA,where CTP communicates with the host via 12C.In transmitter depart ment,up to 28 Parallel RGB video data are serialized into single pair highspeed signal,and a single pole double throw （SPDT） analog switch is used to implement multiplexing a single pair of data lines between LVDS and FC in order to im plement the signal transmission.in receiver department,the reverse function is completed.This paper mainly studies the de sign and simulation of the transmitter.