Catalog
10BASE-T1S Single Pair Ethernet PHY
Key Features
• 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
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• Media Independent Interface (MII)
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• Reduced Media Independent Interface (RMII)
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• Carrier Sense Multiple Access / Collision Detection (CSMA/CD) media access control
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• 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
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• Application Controlled Media Access (ACMA) for implementation of collision-free Time-Division Multiple Access (TDMA) methods
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• IEEE Std 802.1AS™ / IEEE 1588™ application support* Enables high-precision clock recovery with ultralow jitter for microcontrollers without Time-Sensitive Networking (TSN) support
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• Credit-based traffic shaping
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• 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
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• Cable fault (open/short) diagnostics and Signal Quality Indication (SQI) support
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• Over-temperature and under-voltage detection
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• 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
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• Single 3.3V supply with integrated 1.8V regulator
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• Small footprint 24-pin (4 x 4 mm) VQFN packages with wettable flanks
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-40°C to +125°C extended temperature range
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• AEC-Q100 qualification
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• Functional Safety Support (ISO 26262)* Functional Safety Manual
• * FMEDA
• * Dependent Failure Analysis (DFA)
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• [AUTOSAR MCAL evaluation package available](https://www.microchip.com/en-us/solutions/automotive-and-transportation/software/autosar)* 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
Description
AI
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.
Microchip's complimentary and confidential [MicroCHECK](https://www.microchip.com/en-us/support/design-help/design-check-services) design review service, which offers insight from the initial concept to the final PCB layout, is available to customers who are using our products in their projects. You can confidently submit your design materials in a secure and private setting, and our expert engineers will provide individualized feedback to enhance your design. MicroCHECK design review service is subject to Microchip's [Program Terms and Conditions](https://www.microchip.com/en-us/support/design-help/design-check-services/design-check-services-program-terms-and-conditions) and requires a myMicrochip account.
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 additional information please contact Microchip Support or Sales.