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onsemi NCN26010 Industrial Ethernet MAC + PHY IC Controller

10 Mb/s, Single-Pair, MAC + PHY, 802.3cg, 10BASE−T1S Compliant

The onsemi NCN26010 device is an IEEE 802.3cg compliant Ethernet Transceiver including a Media Access Controller (MAC), a PLCA Reconciliation Sublayer (RS) and a 10BASE−T1S PHY designed for industrial multi−drop Ethernet. It provides all physical layer functions needed to transmit and receive data over a single unshielded twisted pair. NCN26010 communicates to host MCUs via Open Alliance MACPHY SPI protocol.


  • Enhanced Noise Immunity Mode:
    • ENI extends the noise immunity to values well above the IEEE T1S standard
    • Allows the NCN26010 to withstand worst-case DPI and BCI immunity tests
    • Significantly improves the network reach when enabled, almost 2X better than competition
    • Unique to NCN26010
  • Lowest Line Pin Capacitance:
    • Best-in-class line pin capacitance allows for the highest number of nodes per segment.
    • The NCN26010 supports up to 40 nodes on a 25-meter segment, well above the IEEE minimum standard
    • Lowers cabling, connector, and installation costs
  • Collision Detection Masking:
    • Masking detected collisions allows operation in noisy conditions
    • Prevents false collision detection in high-noise environments
    • When used in conjunction with ENI, the NCNS26010 has unparalleled noise tolerance
  • PLCA Precedence Mode:
    • Lower PLCA ID's get precedence over higher ones
    • Provides arbitration similar to CAN: The Coordinator (i.e., the head node) sends a new beacon once any station transmits
    • Unique to NCN26010
  • Physical Layer collision avoidance PLCA:
    • Allows higher throughput in multi-drop topologies
  • Two Configurable Digital Outputs that can Drive Low Current LEDs:
    • Supports systems where up to two LEDs can provide status indicators
  • Open Alliance Compatible SPI Interface:
    • Conforms to Open Alliance TC6 specs for Configuration and Data Frames to Host MCUs
  • MAC Address Filtering:
    • By filtering frames based on the destination address, Ethernet frames not intended for a certain node are not processed by the host, thus reducing the load
    • The MAC will see the frame, process the address, drop it based on the filter criteria, and the host will not need to handle it
  • Supports IEEE802.3 CSMA/CD Collision Detection:
    • PLCA mode will default to CSMA/CD collision detection, if needed


  • Industrial Automation
  • Sensor and Control Interfacing
  • Home / Building Control
  • Security and Field
  • Instrumentation

End Products

  • Programmable Logic Controllers
  • Distributed Control Systems
  • Motor Starters
  • Contactors
  • Autonomous Mobile Robots
  • Servers
  • Intelligent Sensors and Lighting
  • Control Panels
  • Human/Machine Interfaces

NCN26010 Block Diagram

onsemi — NCN26010 Block Diagram

NCN26010 Basic Application Diagram


onsemi NCN26010XMNEVK Evaluation Kit

The NCN26010XMNEVK 10BASE-T1S MACPHY evaluation kit is a set of PCBs designed to allow customers access to onsemi's NCN26010 SPI enabled 10BASE-T1S MACPHY. Its main purpose is to demonstrate the MACPHYs basic functionality and doubles as a lab tool to allow customers to develop their own embedded software drivers for the NCN26010 device.

onsemi — NCN26010XMNEVK: NCN26010XMNTXG Evaluation Kit
NCN26010XMNEVK Evaluation Kit User's Manual
  • The evaluation kit consists of the NCN26010BMNEVB bridge board and the NCN26010XMNEVB 10BASE-T1S evaluation board.
  • The bridge board provides a power connector that allows feeding the boards with a DC supply of anything between 8 V and 28 V. For full operation, when a Raspberry Pi Model 3 is connected to the board, the power supply needs to be able to provide 10 W of continuous power.