SignalTapⅡ在FPGA设计中的应用

The Application of SignalTapⅡ in FPGA Design

SignalTapⅡ是Altera公司生产的新一代FPGA开发软件QuartusⅡ中的一种嵌入式逻辑分析工具。它以软件窗口为操作界面,可以灵活方便地选取想要观测的信号和设置采样的通道数及深度,并可通过FPGA的JTAG接口在电脑上进行同步显示。应用这种方式对FPGA内部信号进行检测,不但成本低,而且不占用额外资源或I/O引脚,且更为精确。本文主要介绍SignalTapⅡ的特点及配置方法,并以实际应用为例,说明了其在仿真测试中的良好效果。

SignalTapⅡ is a kind of embedded logic analysis tool,which is the developed software Quartus Ⅱ within the FPGA produced by the company of Altera. It takes software window to be the operate interface,so it can flexibly select the desired signal and set the number and sampling depth of channels. Moreover,with the help of JTAG interface of the FPGA,it can be connected to a computer to display synchronously. If this method is chosen to detect the inside signals of FPGA,not only the cost is very low,but also the detection will not take additional resources or I/O pins and with a higher accuracy. This paper mainly introduces the features and the configure methods of the SignalTapⅡ. With an example,the paper shows the good results of SignalTapⅡ in simulation tests.