uart2bus_testbench,uart测试平台，主要运用uvm验证方法学，对uart接口、systemverilog和uvm等ic开发和验证有一个初步了解和掌握。-Uart2bus_testbench, uart test platform, the main use of uvm validation methodology, uart interface, systemverilog and uvm ic development and verification have a preliminary understanding and master.