基于USB接口的VSAT基带数据采集系统的设计

针对卫星接收设备数据采集的实际需要,提出一种基于USB接口的VSAT(甚小口径卫星终端)基带数据采集系统的设计方案。该系统采用Cypress公司的CY7C68013芯片作为USB通信的主控芯片,充分应用了CPLD(复杂可编程逻辑器件)的灵活性,仅采用单片USB接口控制芯片,就实现了对多路多速率数字信号的实时采集。系统最多可同时采集8路数字信号,单路最高速率可达2 Mbit/s,是一种单路可独立工作、几路组合可实现多路多速率数字信号的采集系统,可广泛应用于VSAT通信系统中。

Design of Baseband VSAT Data Stream Collection System Based on USB Interface

In this paper,the design concept of baseband VSAT data stream collection system based on USB interface is proposed,according to the requirements of data stream collection in satellite receiving equipment.The CY7C68013 chip of Cypress company is used as main USB communication control chip,and the flexibility of CPLD is fully used to meet the requirement of real-time collection of multi-channel multi-rate digital signal.Eight channels of digital signal could be collected simultaneously,and the speed of single-channel could reach 2Mbps in the system which could work not only independently in single-channel mode,also could implement collection of multi-channel multi-rate digital signal by combination of multiple single channels,thus it could be widely used in VSAT communication system.