基于FPGA的IIC在线测试系统

发布时间：2018-11-20 16:40

【摘要】：随着半导体工艺设计规模的不断增加,芯片的集成度和复杂度不断增大,芯片的测试变得复杂而耗时,这将严重阻碍半导体行业的发展。在集成电路领域中,芯片的测试占据整个芯片开发周期的70%以上。因此,快速精确实现对芯片的测试己成为我们急需解决的问题。传统的芯片测试主要依靠示波器和信号发生器等测试仪器,通过人手工实现对芯片的各个接口进行测试,市场上的示波器和信号发生器并不是针对芯片测试领域而设计的,因而这种测试方法测试项单一,测试流程复杂、耗时。现有的EDA验证软件的验证功能往往很局限,根本无法满足大规模的集成电路测试要求。因此,本文提出的是一种基于FPGA平台的IIC在线测试系统,该系统率先通过设计码型发送器与码型接收器实现对芯片IIC总线接口的测试,该系统的测试项达二十多项,测试项全面,并且测试的工作量大大减少。整个测试流程在PC机通过使用TCL脚本控制系统工作,实现测试全自动化,在线得到测试结果。该系统测试准确可靠并且完全摆脱对示波器、信号发生器等测试仪器的依懒,不仅能够实现IIC波形的重现,并且能够得到精确的测试结果。本文通过对5560X芯片的IIC接口的成功测试,证实了本系统的准确性和可行性。本文目前虽然只支持IIC接口的测试,但在其设计初期己将各类总线的测试考虑在内,如SPI、LOCALBUS和MDIO总线等。本系统具很强的扩展性,并且设计思路新颖,系统在设计初期并没有将各类总线特殊化,而是将各类总线根据其通信的信号线数进行划分,采用码型多变,硬件设计模块少变的方法实现对各类总线的测试。本系统的提出,将有效解决了芯片验证领域中操作过于复杂、测试的时间过长的问题,很具实用前景。
[Abstract]:With the increasing scale of semiconductor process planning and the increasing integration and complexity of chips, the testing of chips becomes complex and time-consuming, which will seriously hinder the development of semiconductor industry. In the field of integrated circuits, chip testing accounts for more than 70% of the whole chip development cycle. Therefore, the rapid and accurate implementation of chip testing has become a problem we urgently need to solve. The traditional chip test mainly depends on the oscilloscope and signal generator and other testing instruments. The interface of the chip is tested by human hand. The oscilloscope and signal generator in the market are not designed for the field of chip testing. Therefore, the test method is simple, complex and time-consuming. The verification function of the existing EDA verification software is often very limited and can not meet the requirements of large-scale integrated circuit testing. Therefore, this paper presents a IIC on-line test system based on FPGA platform. The system is the first to test the chip IIC bus interface by designing the code transmitter and the code receiver. The test items of the system reach more than 20 items. The test items are comprehensive and the workload of the tests is greatly reduced. The whole testing process works in the PC machine by using TCL script control system to realize the full automation of the test and get the test results online. The system is accurate and reliable and can completely get rid of the idleness of oscilloscope signal generator and other test instruments. It can not only realize the IIC waveform reproduction but also get accurate test results. The accuracy and feasibility of this system are verified by the successful test of IIC interface of 5560X chip. Although this paper only supports the test of IIC interface, the test of all kinds of buses, such as SPI,LOCALBUS and MDIO bus, has been taken into account at the beginning of its design. This system has very strong expansibility, and the design idea is novel, the system does not specialized all kinds of buses at the beginning of the design, but divides the various kinds of buses according to the number of the signal lines of its communication, adopts the code type changeable, The method of less change of hardware design module realizes the test of all kinds of buses. This system will effectively solve the problem of too complicated operation and too long test time in the field of chip verification.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN407

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