USB chip verification system

Abstract

The invention discloses a USB (Universal Serial Bus) chip verification system which is externally hung on a USB bus and comprises an information acquisition module, a time sequence analysis module, a coding analysis template and an information recording module, the information acquisition module is connected with a data transmission pin of the USB chip, and the information acquisition module acquires data information transmitted on the data transmission pin; the time sequence analysis module is respectively connected with the information acquisition module and the information recording module, and the time sequence analysis module performs time sequence analysis on the acquired data information; the coding analysis module is respectively connected with the information acquisition module and the information recording module, and the coding analysis module is used for carrying out coding mode analysis on the acquired data information; and when the verification host finishes verification of the USB chip, the information recording module outputs an analysis record report. The USB chip verification system can be used in various USB interfaces, the verification burden is reduced, the verification efficiency is improved, and the verification system can automatically collect function coverage conditions and help verification to be converged quickly.

Description

technical field [0001] The invention relates to the field of digital verification, in particular to a USB chip verification system. Background technique [0002] USB chip is a consumer electronic product, and the market demand is very large. It is always present in most electronic products, and its own characteristics make it have higher requirements for the development cycle. Moreover, with the improvement of integrated circuit technology, the circuit is becoming more and more complex, and the difficulty of verification is gradually increasing. In chip design, the workload of chip verification has occupied more than 50% of the time, so higher requirements are put forward for the method and system of chip verification. [0003] In the existing technology, the verification of USB chips mostly adopts two methods: building a reference model and using a verification intellectual property module (Verification Intellectual Property, VIP). The reference model is a behavior model c...

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Problems solved by technology

[0004] However, in the above-mentioned various verification methods, the design of the reference model has the disadvantages of complex design, long development time, and difficulty in quickly integrating and applying it to the platform; while in the VIP method, if other company's IP is used, it may introduce new Uncertainty increases the complexity of verification, and most of the IPs are encrypted files, which makes it more difficult to find and correct errors, and the introduction of IP will slow down the compilation and simulation speed; in addition, the above two methods need to establish a special The verification platform of the USB chip increases the complexity of the verification, increases the verification time, and reduces the verification efficiency

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