摘要： 介绍了龙芯2 号配套北桥中PCI Bridge 的功能验证系统以及功能覆盖率建模和分析方法。该系统和方法在开发和验证PCI Bridge模块过程中发挥了重要作用，加快了PCI Bridge 的开发速度，协助发现了一些设计与规范不相符合的地方，对后期流片成功提供了有效保证。描述的功能覆盖率建模和分析方法具有一定通用性，可以为其它相似系统的验证提供借鉴。

关键词: 覆盖率分析；PCI Bridge；功能验证

Abstract: This paper presents a functional verification system of Godson2 PCI Bridge, which includs verification platform, coverage model and coverage analysis. This system is very important for verification of PCI Bridge. It finds some difference between design and PCI Bridge specification to ensure the successful of taping out. This practical methodology also can be used in other similar applications.

Key words: Coverage analysis; PCI Bridge; Functional verification