UART是工程师在开发调试时最常用的工具的，其通信协议简单。opencores 网站提供了兼容16550a的UART IP其基本特性如下：

uart16550 is a 16550 compatible (mostly) UART core.

The bus interface is WISHBONE SoC bus Rev. B.

Features all the standard options of the 16550 UART: FIFO based operation, interrupt requests and other.

该UART IP的UVM验证平台在《A Practical Guide to Adopting the Universal Verification Methodology (UVM),Second Edition.》这本书中就有，书中的所有例子都在uvm_ref_flow_1.2中。

参考文献：

[1] uart16550. http://opencores.org/project,uart16550

[2] Kathleen Meade and Sharon Rosenberg. A Practical Guide to Adopting the Universal Verification Methodology (UVM),Second Edition.