Automobiles are becoming more and more connected - both inside the car, within the various subsystems/domains as well as with the outside world, with connectivity via Bluetooth, LTE, WiFi etc.
Much more information and data are being shared or transferred between the various domains; for example, video from rear and surround view cameras for displayed in the head unit; data from the chassis is sent to the on-board diagnostic unit, etc. As the amount of data that has to be integrated and transported between the various domains in a time sensitive manner has increased, car manufacturers are looking to include a network gateway, based on Ethernet protocols, in cars. Such gateways should be able to handle multiple connectivity protocols such as CAN, CAN-FD, TCP/IP to name a few. TI’s DRA80x family of products enable automotive manufacturers to build scalable and cost optimized network gateway features in cars, thanks to its high level of integration and purpose built peripherals, such as Gigabit Ethernet MACs.
DRA80x Automotive Gateway processors are built to meet the intense processing needs of automotive gateway. The DRA80x family of devices combines four or two Arm® Cortex®-A53 cores with an ASIL-C capable dual Arm® Cortex®-R5 MCU subsystem and six Gigabit Ethernet MACs in the MAIN domain and one Gigabit Ethernet MAC in the MCU domain to create an SoC capable of implementing an Automotive Gateway system with plenty of automotive connectivity and functional safety processing.
The four Courtex-A53 cores in the DRA804M are arranged in two dual-core clusters with shared L2 memory to create two processing channels to address additional safety concepts. The two Arm® Cortex®-A53 cores in the DRA802M are available in a single dual-core cluster and two single-core cluster options. Extensive ECC is included for on-chip memory and interconnects for reliability. Cryptographic acceleration and secure boot are available on some DRA80x devices, in addition to granular whitelist firewalls managed by a security controller core.
Programmability is provided by the Arm® Cortex®-A53 RISC CPUs with Arm® Neon™ extension, and the dual Arm® Cortex®-R5 MCU subsystem is available for general purpose use. The Ethernet subsystem can be used to provide up to six ports of Ethernets, including TSN and Ethernet/IP, for standard Ethernet connectivity. Additionally, TI provides a complete set of development tools for the Arm® cores including C compilers and a debugging interface for visibility into source code execution. Safety documentation is available for applications needing to meet functional safety standards.
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|Part number||Order||Arm CPU||Arm MHz (Max.)||DRAM||Co-processor(s)||EMIF||Other on-chip memory||Ethernet MAC||Serial I/O||Storage interface||PCIe||McASP||Security enabler||USB|
||4 Arm Cortex-A53||
|Arm Cortex-R5F PRU-ICSS||1x 39-bit with ECC||2.5 MB||
6-Port 10/100/1000 PRU EMAC
1x SDIO 4b
1x SDIO 8b
1x UHSI 4b
1x eMMC 8b
|2 PCIe Gen3||3||
Trusted execution environment