Overview of SOC design methods

introduction

An important issue facing human beings entering the 21st world is how to face the challenges of informationization of national economic and social development. The rapid development of the information industry with network communication, software and microelectronics as the main symbol not only provides us with an unprecedented development opportunity, but also creates a rare market and industrial environment.

The foundation of the integrated circuit as an electronics industry and the entire information industry has benefited from this rare opportunity and has shown a rapid development. SOC is internationally supported by Software/Hardware Co-Design, intellectual property core (IP core) multiplexing, and ultra deep sub-micro (Very Deep Sub-M integrated circuit ron, VDSM) technology. The development trend of very large scale integrated circuits (VLSI) and the mainstream of integrated circuits in the new century.

At the same time, the advancement of integrated circuit design technology lags behind the advancement of integrated circuit manufacturing technology has become the key to constrain the future healthy development of the integrated circuit industry. Traditional design methods based on standard cell libraries have proven to be incapable of SOC design; current logic-oriented integrated circuit design methods have encountered insurmountable obstacles in deep sub-micron integrated circuit design; the field of chip design is no longer It is limited to traditional semiconductors and must be integrated with the whole system; IC design engineers have never been so eager to acquire new knowledge, especially about the whole system. Therefore, the development of a new generation of integrated circuit design methodology for SOC as soon as possible is crucial to the development of integrated circuits.

Looking back at the history of the integrated circuit industry in the second half of the 20th century, it is not difficult to see that the well-known MOORE law has been accurately describing the development of integrated circuit technology. Experts generally believe that this famous law will remain valid for a long time in the new century. Although the law of progress in integrated circuit process technology revealed by MOORE's law is so enticing, and its high speed of development is rare in modern society, today's booming network technology is compared (see Figure 1). Dwarfing, far from meeting the requirements of the development of the information industry.

According to relevant reports, in today's American society, if the cost is 9 cents per minute, and 15% of households spend an average of 60 minutes per day, the existing network capacity must be doubled, resulting in investment in switching equipment. For $30 billion, access equipment investment is as much as $700 billion. The demand for integrated circuits by these switching devices and access devices will be enormous.

Modern communication technologies are moving toward personalization, broadband and intelligence (Figure 2). The development of the second generation of mobile communication, which is mainly represented by GSM, has been exerted in the last year of the 20th century.

With the development of broadband technology, the means of traditional cultural entertainment will continue to be updated. A new generation of high-definition televisions represented by “excellent” technology has begun to enter the home, and TV on demand (VOD) will become a daily life. the part that can not be lost. If you want to transmit high-definition TV programs over the network, the bandwidth of the access will reach 15MHz. Obviously, the emergence of this new way of cultural entertainment will inevitably have a huge impetus to the advancement of integrated circuit technology. So some people say that the development of integrated circuits is too fast.

The market is the most direct driving force for the development of the integrated circuit industry. The development of integrated circuits for decades has proved that “thin is finer, faster and cheaper”. The goal that people have been pursuing is not only effective in the new century, but also with the economy. The development has become more urgent. At the time of the SOC era, although people have to face numerous challenges and numerous new topics, they also provide a rare opportunity for all the scientific and technological personnel working in this field, and also provide a new re-environment for the global semiconductor industry. The opportunity to shuffle.

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