基于 LVDS 协议的可编程高速信号模拟源设计

摘要

A design of programmable high-speed signal emulator based on LVDS protocol is pro-posed.This signal emulator takes the Spartan-3E family FPGA of Xilinx company as the core processing unit.The whole design is integrated in one FPGA chip which including data generation, signal acquisi-tion, buffer-storage, serial and parallel conversion and duplex communication between PC with external e-quipment through LVDS protocol and UART.The circuit design is very simple and the data transmit-re-ceive is fast and usual, which is also easy for upgrading.%设计了一种基于低压差分信号（ LVDS ）协议的可编程高速信号模拟源。该信号模拟源采用Xilinx公司的Spartan－3E系列现场可编程门阵列（ FPGA）作为核心处理芯片，整个逻辑设计集成在一片FPGA内，包括数据生成、信号采集、缓存、并串转换以及LVDS协议数据传输与通用异步收发器控制字（ UART）传输的全双工通信等功能。本设计电路结构简单、采集与发送数据速率高、传输接口通用性强且收发具有灵活的可编程性。