Logic Analyzers are very powerful and important debugging tools that are crucial for any digital electronic development system. For FPGAs development, digital designers can insert Logic Analyzers also within their design in the FPGA. These FPGA Logic Analyzers are provided by every FPGA vendor so that developers can utilize it in order to ease debugging of their system. In this document we will see Logic Analyzer provided by Xilinx and how we can implement it.