[原创]Microchip LAN8770 100BASE－T1以太网PHY收发器解决方案

Microchip公司的LAN8770是紧凑的成本效益的单端口100BASE-T1以太网PHY层收发器,和IEEE 802.3bw-2015标准兼容.器件在单股非屏蔽双绞线(UTP)电缆上提供100Mbps发送和接收功能,支持电缆长度长达15米. LAN8770可工作在Grade 1汽车温度(-40C 到 +125C),最佳用在AEC-Q100汽油应用如汽车辅助驾驭系统(ADAS),信息娱乐系统,远程信息处理,智能天线和车内主干线. LAN8770支持以太网MAC通过标准MII/RMII/RGMII接口(RGMII仅限于LAN8770R).对于RGMII和RMII应用,可分别提供125MHz 或50MHz基准时钟输出,而集成的SMI接口提供迅速的寄存接入和配置.器件具有3级脉幅调制(PAM-3)线路编码和回声消除功能. EtherGREEN™能量效率如超低功耗睡眠模式(典型12μA)和支持本地叫醒以及睡眠请求识别.主要用在高级驾驶员辅助系统(ADAS), 信息娱乐系统,远程信息处理,智能天线和车内主干线以及网关.本文介绍了LAN8770主要优势和亮点, 系统级框图以及评估板EVB-LAN8770-RMII主要特性,框图,电路图,材料清单和PCB设计图.

The Microchip LAN8770 is a compact, cost-effective, single-port 100BASE-T1 Ethernet physical layer transceiver compliant with the IEEE 802.3bw-2015 specification. The device provides 100 Mbit/s transmit and receive capability over a single Unshielded Twisted Pair (UTP) cable, supporting cable lengths of up to at least 15m. The LAN8770 is available in a Grade 1 Automotive (-40C to +125C) temperature range and is optimized for AEC-Q100 automotive use cases such as Automated Driver-Assistance Systems (ADAS), infotainment, telematics, smart antennas, and in-vehicle backbones.

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