【摘要】 在数字电视领域,对信号传输实时性、误码率及可靠性要求很高,并且随着CPU主频的发展,传统的PCI总线已渐渐不能满足带宽和传输精确性的要求,文中通过分析MPEG-2传输流的特点以及传统总线和PCI EXPRESS总线的性能,提出了一种在视音频采集卡中采用PCI EXPRESS总线技术的设计方案,该方案利用FPGA中已有的高速收发器模块及现有的PCI EXPRESS IP内核来设计和配置,可实现数字电视制播系统中信号传输实时性和可靠性的要求。更多还原

【Abstract】 In the field of digital-TV,the demand of signal transmission’s real time,error-code rate and dependability is very high.And with the development of CPU,traditional PCI bus couldn’t satisfy with bandwidth and transmission accuracy gradually.Analyses MPEG-2 TS’s characteristic and the performance of traditional bus and PCI EXPRESS bus,and proposes a project which using PCI EXPRESS bus technology in video & audio collection block.This project designs and configures by using high transceiver module of FPGA and PCI EXPRESS IP core.It can realize signal transmission’s real time and reliability in digital-TV’s broadcasting system.更多还原