Automotive gateway solution enables next-gen E/E architectures

October 05, 2021 // By Christoph Hammerschmidt
Automotive gateway solution enables next-gen E/E architectures
Renesas has unveiled an innovative automotive gateway solution with R-Car S4 SoCs for next-generation vehicle computers, communication gateways, domain servers and application servers. With the solution, the chipmaker hopes to meet the automotive industry's high demands for high performance, high-speed networking, high security and high functional safety levels that are required as E/E architectures evolve into domains and zones.

The new R-Car S4 solution allows designers to re-use up to 88 % of software code developed for 3rd generation R-Car SoC and RH850 MCU applications, Renesas promises. The software package supports R-Car S4 application development including the real-time cores with various drivers and basic software such as Linux BSP and hypervisors. In addition, a virtual platform (VPF) is available from a partner company, enabling early software development and evaluation to reduce design time and cost.

The R-Car S4 is one of the first products in Renesas’ 4th-generation R-Car Family. It includes multiple Arm Cortex A55, Cortex R52 and is the first to implement an RH850 MCU for control domain management. R-Car S4 SoCs offer a number of automotive interfaces such as 16x CAN FD, 16x LIN, 8x SENT, 1x FlexRay, 4x PCIe V4.0 and also a high-bandwidth 3 x 2.5Gbit Ethernet Switch to enable rich communication and connectivity options both inside and outside of the vehicle.

Also on board are the required Power Management ICs (PMICs). These provide advanced power modes that support extremely low power operation. The RAA271041 PMIC accepts the vehicle’s 12V supply and supports wide operation for load dump and cold cranking pulses while providing the first-stage regulation. The RAA271005 is a Safe 11-channel PMIC that takes the RAA271041’s output and steps it down further to the various supply voltages needed by R-Car S4 and its peripherals such as LPDDR4x memory. The RAA271041 and RAA271005 PMICs provide a complete power solution from vehicle battery down to system voltage.

Key Features of the R-Car S4 SoCs include

•  Eight 1.2 GHz Cortex A55 cores, one 1.0 GHz Cortex R52 dual core (lock-step) and two 400 MHz RH850 G4MH dual cores (lock-step) deliver up to 27 KDMIPS application performance plus greater than 5.3 K DMIPS real-time performance

•  Integrated Ethernet TSN switch offers bandwidth of 3 x 2.5 Gbps to deliver fast and low-latency communication in the vehicle backbone


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