FPGA的比较与选型

随着集成电路技术的发展，现场可编程门阵列（ＦＰＧＡ） 以其独特的优点得到了越来越广泛的应用。目前有很多厂家生产ＦＰＧＡ，其中Ｘｉｌｉｎｘ 和Ａｌｔｅｒａ 公司的ＦＰＧＡ 产品使用比较广泛。本文主要以Ｘｉｌｉｎｘ ＸＣ４０００ 系列和Ａｌｔｅｒａ ＦＬＥＸ 系列为例，从ＦＰＧＡ 内部结构的可编程逻辑块，输入／ 输出块和连接布线资源三个方面对两个公司的产品进行比较

The Comparison and Selection of FPGA

With the development of integrated circuits, Field Programmable Gate Array(FPGA)is applied extensively with its special merits. There are a lot of factories producing FPGA at present and the FPGA products of Xilinx and Altera corporations are more popular. This paper describes the FPGA of Xilinx XC4000 series and Altera FLEX series in structure and compares the two corporations' products in three aspects: configurable logic block, programmable input/output block and configurable interconnect routing resource.