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NCN26010: 10Base-T1S Product Overview

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.

Product Overview »

Features

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