用FPGA实现ISDN-U接口设计  

Realization of ISDN-U Interface Design with FPGA

作　　者：裴劲涛[1] 王育荣[1] 陆海伟[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2007年第12期46-48,共3页Radio Engineering

摘　　要：详细介绍了可编程逻辑阵列(FPGA)如何构建专用集成电路的方法。根据FPGA在逻辑设计方面的优势,使用FPGA替代传统的、面临停产的数字集成电路或数模混合集成电路成为经济实用的选择。就如何利用FPGA上丰富的逻辑资源实现ISDNU接口功能加以阐述,并对ISDN设备中U接口帧结构、数据结构及CRC原理做了说明。简单介绍了模拟接口中的AD及DA芯片的电气特性及在本设计中的应用。对Xilinx公司的FPGA Spartan-3系列FPGA芯片做了简单介绍。This paper specifically introduces how to construct integrated circuit with FPGA. As FPGA has the advantage on logic design, using FPGA to replace traditional digital integrated circuit or digital-analog integrated circuit which is faced with stop production has become an economical and practical choice. This paper describes how to make use of rich logic resources of FPGA to realize the function of ISDN U interface, and explains the frame structure, data structure and CRC principle of the U interface in ISDN equipment. It also briefly introduces the electrical feature of AD and DA chip in the analog interface and their applications in this design. Meanwhile, it briefly introduces the FPGA Sanpant-3 series FPGA chip made by Xilinx Company.

关 键 词：FPGA ISDN U接口 CRC校验 位同步 

分 类 号：TP317.4[自动化与计算机技术—计算机软件与理论]