How do the giants layout smart cars?

Smart cars are a hot topic in the industry. The so-called car intelligence is to realize the execution of anthropomorphic actions. The premise is to acquire information and process information, so that the car has the comprehensive ability to perceive, analyze, judge and effectively process and execute objective things. This trend has greatly driven the car manufacturer's demand for highly integrated semiconductor solutions. Let's take a look at the latest developments of several companies.

Richer human interface

In the past, car dashboards provided drivers with important instrument identification and indication data, but with the ever-evolving automotive front-end modules, these are not enough. This poses a challenge for OEMs who want to further enhance the user experience – both to achieve visual appeal without distracting the driver. “Traditional MCUs generally lack high-definition video/picture processing and storage capabilities, and the price of dedicated SoCs that can achieve high-performance image effects is too high. Therefore, it is a natural choice to upgrade the MCU to have image processing functions.” Spansion Wang Wei, marketing director of the company's microcontroller and analog business unit, said.

Wang Wei, Marketing Director, Marketing Department, Microcontroller and Analog Business Unit, Spansion

Wang Wei, Marketing Director, Marketing Department, Microcontroller and Analog Business Unit, Spansion

They have introduced two different Traveo MCU car dashboard solutions: S6J324C series supports 2D, S6J326C series supports 2D and 3D graphics processing, and can be connected to Spansion HyperBus interface, CAN-FD/Ethernet AVB communication protocol and LVDS PHY, RSDS advanced graphics interface, and a unified package. Since 3D content can be sent directly to the display engine without external RAM, Traveo MCU can reduce the system PCB layer from 6 layers to 4 layers compared to the traditional solution, reducing the cost to 1/3.

In order to complete one-stop system development with less effort than before, Spansion also offers a wide range of software toolkits for its SoC, such as AUTOSAR (MCAL 4.x, BSW), graphics (Spansion 2D/3D graphics) Engine library, transformation support tools, authoring tools), SHE (CRY library), audio (waveform editor and simulator).

The reason why the R5 series is chosen is that Wang Wei said that this is the core developed by ARM for automotive electronics applications. It combines high performance with low power consumption. It is ideal for automotive motor control, battery management, instrument panel, and heating and ventilation. Air conditioning (HVAC), Advanced Driver Assistance Systems (ADAS), and Human Machine Interface (HMI) control, as well as future multi-core applications.

"Multi-core MCU chips are still not widely used in the automotive field. Due to the particularity of the automotive industry, the chip-solution-car factory-production cycle spans very long. The cycle of a new technology to be applied to a car will be quite long. Therefore, before the multi-core ecosystem is perfected, the car factory will not rush to adopt it.” But Wang Wei believes that this will be a trend. In the future, whether it is engine control or infotainment system, when graphics, audio and video are processed synchronously, multi-core chips Will greatly reduce the cost and complexity of the system.

More active car safety

The Advanced Driver Assistance System (ADAS) is a critical step toward the goal of fully autonomous driving. A typical ADAS system typically includes video amplification, encoding, transmission, decoding, processing, and display functions. From the beginning, the ADAS processor was designed to reduce total cost of ownership (ToC) without sacrificing system vendor and OEM flexibility. In addition to sufficient programming and processing power, it requires lower power consumption, an optimized visual processing library, and functional safety in accordance with ISO26262.

Mark Gill, Vice President and General Manager, Automotive Electronics Division, Analog Devices

Mark Gill, Vice President and General Manager, Automotive Electronics Division, Analog Devices

Mark Gill, vice president of ADI and general manager of the automotive electronics division, agrees with this trend: “Safer, greener and smarter will be the future vision of ADI automotive electronics technology. Our future investment focus will be on ADAS, New energy vehicle powertrain and intelligent infotainment system." In the past five years, Mark Gill's department accounted for 10% of the company's overall revenue, and the car has become ADI's fastest growing strategy. One of the market's leading technologies includes 12V battery management technology, airbag detection, ESC/ESP, and DSP active noise reduction.

In the field of automotive safety, ADI's core products can be divided into gyro sensors for passive safety airbags and anti-slip devices, low G/high G acceleration sensors, and active safety solutions to prevent front-vehicle collision, dead-end detection and pedestrian detection. It includes 24GHz/77GHz radar systems and all key components from RF devices, analog front ends to DSPs. The ADSP-BF60x series is a representative product of ADI. The ADSP-BF609 (processing megapixel format) and ADSP-BF608 (processing VGA format) support five parallel vision functions, and the power consumption is less than 1.3 at 105 °C ambient temperature. W, processing speed of 30 frames / sec, can reduce the total cost of the ADAS system by about 30%.

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