NCN26010 Ethernet Controller

The 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.

Features

• Enhanced Noise Immunity Mode：

1. ENI extends the noise immunity to values well above the IEEE T1S standard
2. Allows the NCN26010 to withstand worst-case DPI and BCI immunity tests
3. Significantly improves the network reach when enabled, almost 2X better than competition
4. Unique to NCN26010

• Lowest Line Pin Capacitance:

1. Best-in-class line pin capacitance allows for the highest number of nodes per segment.
2. The NCN26010 supports up to 40 nodes on a 25-meter segment, well above the IEEE minimum standard
3. Lowers cabling, connector, and installation costs

• Collision Detection Masking:

1. Masking detected collisions allows operation in noisy conditions
2. Prevents false collision detection in high-noise environments
3. When used in conjunction with ENI, the NCNS26010 has unparalleled noise tolerance

• PLCA Precedence Mode:

1. Lower PLCA ID's get precedence over higher ones
2. Provides arbitration similar to CAN: The Coordinator (i.e., the head node) sends a new beacon once any station transmits
3. Unique to NCN26010

• Physical Layer collision avoidance PLCA:

1. Allows higher throughput in multi-drop topologies

• Two Configurable Digital Outputs that can Drive Low Current LEDs:

1. Supports systems where up to two LEDs can provide status indicators

• Open Alliance Compatible SPI Interface:

1. Conforms to Open Alliance TC6 specs for Configuration and Data Frames to Host MCUs

• MAC Address Filtering:

1. 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
2. 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:

1. PLCA mode will default to CSMA/CD collision detection, if needed

Applications

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