| According to the communications industry to run reports China’s Ministry of Industry recently released show, the mobile phone users are close to 1 billion, the C hinese SIM card is also close to 900 million years in our market, and with the further growth in mobile phone users, the demand of SIM card will grow further. SIM card is a bridge between mobile operators and mobile phone terminal. Early SIM card can only perform simple user identification. With the development of mobile communication business, the rapid popularity of SMS and WAP and other value-added services, mobile operators from the single to the user to provide voice services, gradually began to provide various value-added services.With the deployment of Internet and 3G, 4G networks, mobile communication has entered the era of mobile internet. Mobile maps, mobile positioning, mobile payments, mobile email, and other phone-based mobile data applications began to spread. In this case, SIM cards to achieve the digital copyright protection, streaming control, mobile payment need encryption, as well as value-added services over the air, design and manufacture of high-capacity SIM card is put on the agenda. The large capacity SIM card in order to meet the higher demand of data communication, the need to support with higher rate of communication protocol, SIM card, in addition to supporting high-speed interfaces also need to support traditional ISO7816 interface. In the case of limited resources, the designers design a low-power based on USB2.0 high-speed Inter- Chip USB, referred to as HSIC.Some design companies currently widely used test program, One is on the server side to build a system- level simulation platform test chip functional correctness, another is the establishment of a hardware board- level testing platform, through the PCB test chip function correctly. The simulation platform validation takes a long time, the efficiency is relatively low, for functional testing of the chip to be more comprehensive. By board-level testing platform, there will be many tests blind spots, but also need to use more test tools, work relatively trivial complex. Many companies currently using two programs can be used together to ensure the normal use of the c hip.The main research thesis is the high-speed Inter-Chip USB interface function a large-capacity on the company’s new design SIM card. For the company’s internalhaven’t test cases of a new type of interface design, how to find an efficient, stable and reasonable test program, work is the focus of this article research content. The test program includes test platform to build hardware and software test platform to ensure that the chip module function test was successful. Hardware test platform is mainly to make test circuit board, the correct connection between a host and device, the correct access test points, etc. Software testing is mainly the right to write test code, how to quickly and efficiently to debug the test code, etc. To establish a set of applicable high-speed Inter-Chip USB transfer agreement interface module the testing program, so HSIC interface module to complete the enumeration process between host and device. |
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