Comprehensive analysis of STMicroelectronics upgrade single-chip car information service / car network processor

Semiconductor supplier STMicroelectronics (ST) has released the latest Telemaco automotive processor. The new product is specifically designed to support feature-rich, connected driving services, dramatically improving processing performance and data security.

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The in-vehicle information service system monitors in-vehicle sensor data and exchanges data between the vehicle and the network cloud. Today's in-vehicle information service systems are becoming increasingly complex, supporting many high-value car driving services, including car fault travel diagnostics, road rescue and software wireless upgrade (OTA). End users will also benefit from infotainment features such as location services and access to personal content and contacts on mobile phones. According to ABI Research, by 2021, 72% of the new cars sold worldwide will be equipped with the original in-vehicle information service system, which will also bring opportunities for the aftermarket and OEMs and independent in-vehicle information service companies.

ST's Telemaco concept helps consumers access these advanced connected driving services, providing a cost-effective single piece for automakers through a single integrated in-vehicle information service system processor, secure networking technology and high-quality sound signal processing systems. Automotive processor solutions. Other similar products on the market are usually based on application processors or integrated CPU (Central Processing Unit) GSM modems, and ST's latest Telemaco3 is specifically designed for in-vehicle information service systems and offers flexible network type options, for example, Choose whether to access 2G, 3G or 4G networks. At the same time, the encryption algorithm hardware accelerator enhances the communication security between the processor and the car's own network. Gigabit Ethernet support and optional configuration of the Wi-Fi module (which can be used as a car hotspot) expand the in-vehicle interconnection function.

Antonio Radaelli, director of infotainment business at STMicroelectronics Automotive Digital Products, said: "Today's connected driving applications let car owners see how in-vehicle information services can help them get driving and traveling, and more sophisticated new driving services will emerge in the future. As the only controller in the industry designed specifically for in-vehicle information services and car networking, our new Telemaco3 chip has the processing power needed to support the next generation of connected driving services, enabling the development of car companies in the front and rear loading market to look forward to New product."

The Telemaco3 product family includes the STA1175, STA1185 and STA1195 products with a number of features, such as the number of CAN interfaces and the DSP subsystem, giving designers the flexibility to expand their designs. The new products are currently sampling to major customers and are scheduled for mass production in December 2017.

Technical Description

Compared to the previous generation Telemaco2, the Telemaco3 product family improves on-board information service processing and car networking performance. As an energy-efficient, compact chip-based main processor, Telemaco3 processing speed increased from 700 DMIPS to 2500 DMIPS, a 2.5-fold increase.

The on-chip ARM® Cortex®-M3 microcontroller is designed to manage interface security between the host processor and the vehicle's CAN network, supporting the latest CAN-FD variable data rate standards for higher data transfer rates and communication efficiency . In addition, the new hardware-accelerated encryption engine further enhances data validation and system wireless download upgrade verification.

The DSP Sound Subsystem is an optional feature that provides noise cancellation for improved sound quality in in-vehicle connected applications.

Peripheral interfaces provide system designers with high performance and design flexibility. These interfaces include interfaces for connecting CAN-FD drives, Gigabit Ethernet, Bluetooth® Bluetooth and Wi-Fi® wireless modules, analog amplifier outputs, flash memory and DDR3 SDRAM. The on-chip DDR3 controller gives designers the choice of affordable, high-performance memory that is common on the PC market.

Power management circuitry helps simplify design and saves external components, reducing material costs. In addition, the circuit is always running to ensure that the basic functions of the system are ready for use, while the intelligent start function ensures that the processor can quickly handle events such as CAN interrupts. These two functions help to minimize the car battery load while ensuring that events are processed quickly.

Software development support includes a feature-rich Linux kernel and board support package (BSP), middleware including communication protocols and navigation software. The FreeRTOS operating system kernel of the Cortex-M3 subsystem helps speed development project progress and take advantage of the scale of the Linux open source ecosystem.

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