Single Pair Ethernet Physical Layer Transceiver with TC10 Sleep Standard for Compact Automotive Applications

Published  July 29, 2020   0
LAN8770 OPEN Alliance TC10 Sleep Standard Ethernet Physical Layer Transceiver

Microchip Technology introduced the LAN8770, an OPEN Alliance TC10 sleep standard Ethernet Physical layer transceiver (PHY) that has four-time lower sleep current (15 µA) than other available devices. The IEEE 802.3bw-2015 specification compliant LAN8770 is a compact, cost-effective, single-port 100BASE-T1 Ethernet PHY packed in a 5x5 mm or 6x6mm wettable-flanks QFN.

LAN8770 provides 100Mbps transmit and receive capability over a single Unshielded Twisted Pair (UTP), exceeds automotive electromagnetic interference requirements and is Grade 1 (-40°C to +125°C) automotive AEC-Q100 qualified. The new device is Microchip Functional Safety Ready and supports specialized hardware safety features such as Failure Modes, Effects, and Diagnostic Analysis (FMEDA) and safety manual.

The LAN8770M and LAN8770R support Ethernet MAC communication with the help of standard MII/RMII and MII/RMII/RGMII interfaces, respectively. The reference clock output of 125MHz or 50MHz can also provide for RGMII and RMII applications if required, this eliminates the need for an external reference clock.

The LAN8770 EtherGREEN technology provides low power operation along with ultra-low-power sleep and wake-up modes. With the help of optional integrated linear regulator and Microchip’s flexPWR technology, the power efficiency can be further enhanced for variable xMII and input/output supply voltages, this provides flexible design options and more opportunities to save power.

LAN8770’s small package size makes it suitable for space-constrained applications such as the infotainment head unit, telematics modules, or Advanced Driver Assistance Systems (ADAS). For more information about the LAN8770, visit the official website of Microchip Technology Inc.