基于DCM的脉宽测量系统在FPGA中的实现

Realization of Pulse Width Measurement System Based on DCM in FPGA

介绍了数字时钟管理器(DCM)的脉宽测量系统在现场可编程门阵列(FPGA)中的实现,运用Xilinx公司Virtex-Ⅱ系列FPGA芯片内部DCM的倍频功能,对输入时钟进行倍频,提高计数时钟的频率,并在开发板上通过在线仿真验证了脉宽测量精度的提高。

The paper introduces the implementation of digital clock manager(DCM)pulse width measurement system in field programmable gate array(FPGA),uses the frequency doubling function of DCM in Xilinx Company Virtex-Ⅱ series FPGA chip to double the frequency of input clock,so as to improve the frequency of counting clock,simulates and validates the improvement of pulse width measurement accuracy through on-line simulation on the development board.