- Recently, Gaoyun Semiconductor Technology Co., Ltd. released an FPGA chip and supporting platform products with independent intellectual property rights in China, which is the first time that Chinese-funded company acquired US FPGA manufacturer LatTIce. The display of the domestic "business card" means that the Chinese "core" family has one more "universal" member made in China.
Add a USB function to integrate a new market
FPGA is a field programmable logic array - a programmable "universal" chip. Its special flexibility determines the broad development space in emerging applications, especially the current hot artificial intelligence, there is no ready-made chip ( ASIC) is available and can only be implemented and verified by the FPGA using programmable features to solve the initial solution required by the engineer.
Unlike the current consumer market, which rarely integrates USB 2.0 function blocks, the new chip integrates it, which reveals a technical signal that FPGAs are not only used in communication systems and devices, but also in consumer products. Gao Yun Semiconductor CEO Zhu Yuhui said: "Like Apple engineers show interest in FPGAs, FPGAs have been used in iPhone 7."
For integrated circuits, some manufacturers have integrated CPU (central processing unit) with FPGA. The latter is good at parallel computing and has strong processing power. The former is strong in "management". This is what FPGA lacks. The combination of the two can be effective. Improve overall performance. However, Gao Yunxin's chip gave up the CPU, but integrated with the MCU (single-chip microcomputer). The reason given by Zhu Xihui is: "On the one hand, in the MCU market, the ARM architecture has occupied an absolute dominance. Therefore, FPGA+ The architecture of the ARM core will help to improve the competitiveness of the FPGA. On the other hand, the embedded market is very broad, and Gaoyun chooses to use FPGA+MCU (ARM) to enter this vast embedded market, mainly for the medium High-end differentiated applications, and strive to open up a new world."
In the consumer-grade field, chips embedded in modules such as USB2.0 will be gradually opened in the fields of image monitoring, smart industry, medical equipment, etc. Dynamic reconfigurability and continuous improvement of single-chip clusters will make FPGA functions more and more powerful. For example, in the servo motor controller, the integration of the chip makes the control system of this kind of application more compact, and more precise motor step control, more dazzling display effect control, more humanized, and more convenient human-machine delivery method. .
Change the encryption technology to deal with sudden "power outages"
The chip is made to be layered and ground, and the reverse stripping can "stolen" each layer of the chip. For example, the process sequence is reversed and executed, and the layers are photographed and cloned. Even if the success rate of perfect copying is very low, there is always a chance of “one thousand miles to pick oneâ€. Therefore, the supply of special needs has become an effective way to suffer from a technical blockade. Moreover, the design of the chip is often plagiarized, and its circuit design and shape are very easy to be copied intact.
The innovative encryption technology implemented by Gaoyun chip is also aimed at the fact that the chip itself is cloned and the chip design is plagiarized. For the former, Gao Yun's GW1N series chip realizes 55 nanometer flow film and 28 nanometer design. If “reverse†cloning is carried out, the equipment cost is expensive, and subsequent production is also a problem. Chen Tiancheng, chairman of Gaoyun Semiconductor, told the Science and Technology Daily reporter, "Because from the 90 nanometers, the size of the transistor is almost similar to that of the light wave, and the photon is diffracted. The manufacturer starts from the optical principle and calculates the diffraction condition to make a correction and physically restore it. However, Moore's Law continues to advance, and chips with higher integration such as 55 nm and 40 nm have not been successful by 'reverse' cloning."
For the protection of user design, the chip has a means of self-destruction to ensure that the user-designed data stream is not read. Chen Tiancheng made an analogy. This encryption technology is a bit like an ATM machine. If the ATM machine is maliciously destroyed, the money inside will be sprayed with a lot of ink, even if the money is taken away.
The new chip is a non-volatile FPGA for the Flash process. The so-called non-volatile is like flash memory, when you power on the data is inside, when you power down, the data is still inside. "Compared to the US TPG manufacturer LatTIce's OTP (programmable only once) benchmarking product, the high cloud chip uses flash memory technology, which can be programmed multiple times, with greater flexibility and reusability." Chen Tiancheng said that currently This type of product can completely replace the traditional CPLD (complex programmable logic device), with an annual market volume of about 500 million US dollars.
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