LAN8670C2-E/LMX [Microchip]

The LAN8670 is a high-performance 10BASE-T1S single-pair Ethernet PHY transceiver for 10 Mbit/s halfduplex networking over a single pair of conductors. Utilizing standard Ethernet technology in sensor/actuator networks reduces application costs by eliminating gateways necessary with legacy networking technologies. The ability to connect multiple PHYs onto a common mixing segment further saves implementation costs by reducing cabling and switch ports. The LAN8670 is designed for use in high-reliability cost sensitive automotive, industrial, backplane, and building automation sensor/actuator applications.

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The LAN8670 is designed to be used in ISO 26262 Functional Safety applications. A Functional Safety Package is available, including Safety Manual; Failure Modes, Effects, and Diagnostic Analysis (FMEDA); and Dependent Failure Analysis (DFA). For more information please contact Microchip Support or Sales.

High-performance 10BASE-T1S Ethernet PHY designed according to IEEE Std 802.3cg™-2019
• 10 Mbit/s over single balanced pair
• Half-duplex point-to-point link segments up to at least 15m
• Half-duplex point-to-point link segments up to at least 15m

Media Independent Interface (MII)

Reduced Media Independent Interface (RMII)

Carrier Sense Multiple Access / Collision Detection (CSMA/CD) media access control

Physical Layer Collision Avoidance (PLCA)
• Allows for high bandwidth utilization by avoiding collisions on the medium
• Burst mode for transmission of multiple packets for latency-sensitive applications
• Minimize latency for time-sensitive applications by assigning multiple PLCA IDs per node

Application Controlled Media Access (ACMA) for implementation of collision-free Time-Division Multiple Access (TDMA) methods

IEEE Std 802.1AS™ / IEEE 1588™ application support
• Enables high-precision clock recovery with ultralow jitter for microcontrollers without Time-Sensitive Networking (TSN) support

Credit-based traffic shaping

EtherGREEN™ Energy Efficiency
• Low power 10BASE-T1S PHY operation
• Ultra-low power sleep mode
• Wake up triggered by either MDI activity or local WAKE_IN
• WAKE_OUT pulse assertion
• INH output for enable/disable of ECU supply

Cable fault (open/short) diagnostics and Signal Quality Indication (SQI) support

Over-temperature and under-voltage detection

Enhanced electromagnetic compatibility / electromagnetic interference (EMC/EMI) performance
• Low RF emissions
• Digital output drive strength adjust
• Robust against injected currents and network cable shorts to ground or battery
• Simple low cost bus interface network

Single 3.3V supply with integrated 1.8V regulator

Small footprint 24-pin (4 x 4 mm) VQFN packages with wettable flanks

-40°C to +125°C extended temperature range

AEC-Q100 qualification

Functional Safety Support (ISO 26262)
• Functional Safety Manual
• FMEDA
• Dependent Failure Analysis (DFA)

AUTOSAR MCAL evaluation package available
• Developed as per AUTOSAR version R21-11
• Sample application available to assist configuration of peripherals
• Easy to integrate into any host microcontroller’s AUTOSAR stack