Real-Time Industrial Ethernet Switch (Low Cost) with RZ/N1S

Customers in the industrial arena often require real-time Ethernet solutions, also called industrial Ethernet. Common standards are EtherCat, Powerlink, Sercos III, ProfiNet, Modbus TCP and others.

For a low-cost industrial Ethernet switch or similar setup with fewer calculation performance requirements, the RZ/N1S MPU is a perfect fit because of its high integration, rich interfaces and integrated 6MB RAM. The RZ/N1S features an integrated Arm® Cortex®-M3 based R-In engine that offloads the main cores by working as a dedicated Gigabit Ethernet hardware RTOS/accelerator. External Flash memory can be attached by using a dedicated, second QSPI interface.

This solution demonstrates that a low-cost industrial Ethernet switch can be produced simply with an RZ/N1S MPU, up to 5 Ethernet PHYs, and a power supply. To power this setup, two precise power rails are required and can easily be achieved using our highly integrated RAA212422 dual-output buck regulator, which features integrated MOSFETs that provide a small PCB footprint solution.

System Benefits

  • Highly integrated, low-cost industrial Ethernet (switch) solution with R-In offload engine/HW accelerator
  • Easy to use, high efficiency dual in/out DC/DC converter, providing all required voltages
  • Low BOM count and small PCB space
System Block Diagram

Winning Combinations

Renesas’ complementary product portfolios of Analog + Power + Embedded Processing work together to deliver comprehensive solutions to our customers. Our product experts have developed "Winning Combinations," compelling product combinations that help our customers accelerate their designs and get to market faster.

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