FPGA逻辑设计中常见的复位方式即异步复位和同步复位。大多数情况下简单的通过同步复位或异步复位虽然能够正常的完成复位功能,但并没有得到精确合理的设计,可靠性较差。本文通过对同步复位与异步复位深入的分析,并且比较了各自的优缺点。重点针对异步复位过程中的亚稳态问题采取了一种有效的可靠复位解决方式。
In order to rapidly and precisely collect the I-V characteristics of plasma,the dual channel synchronous data acquisition system has been designed.The functions,structure,and specific implementation process of the system are described in detail.The system is composed of ARM,FPGA,dual channel ADC,two of the high speed FIFO and USB 2.0 controller for implementing synchronous collection of signals from dual channel and precise buffering and high speed transmission of the data collected.The experimental analysis shows that the system reaches predictive design requirement.
According to the problems in plasma characteristics measuring and data analyzing,we design a data acquisition system.This data acquisition system can realize the synchronized measuring current-voltage (I-V) characteristics of plasma,data bufferingand high speed transmission of the measuring data accurately. This paper details the functions,configuration and realizing process ofthe system.
