The popularity of Ethernet architecture simplifies many different applications design, configuration, and control. This is especially important for mobile Internets that need to be higher than the previous data transmission speed. The car is largely dependent on local networking. In this network, a part of the equipment is in a sleep state, and wakes up on demand. MICROCHIP TECHNOLOGY INC. (US Micro-core Technology), the leader of the car, announced today's Ethernet Physical Leader (PHY) LAN8770 with the lowest sleep current. This transceiver sleep current complies with Open Alliance TC10 sleeping standard is less than 15 μA (micro-security), only one quarter of other similar useful equipment.

The LAN8770 is a compact, low-cost single-port 100Base-T1 Ethernet PHY, in line with the IEEE 802.3BW-2015 specification, providing 5 x 5 mm or 6 x 6 mm wet width QFN package. This small package is ideal for space-limited applications, such as core units of an info system, remote communication processing module, or advanced driving assistance system (ADAS). It can provide 100 Mbps transmission and reception functions through single non-shielded twisted pair (UTP), meet automotive electromagnetic interference requirements, and pass 1 level (-40 ° C to + 125 ° C) automotive-level AEC-Q100 certification . In addition, the LAN8770 also supports Microchip's functionality. It has specially designed, with exclusive hardware security features, fault mode, consequences, and diagnostic analysis (FMEDA), and security manuals, you can simplify the ISO26262 safety certification of the customer's final product.

The two products of LAN8770M and LAN8770R support communicate with Ethernet Mac through standard MII / RMII and MII / RMII / RGMII interfaces, and also provide an optional 125 MHz or 50 MHz reference clock output for RGMII and RMII applications, usually eliminating External reference clock reliance.

Charles Forni, Vice President of Microchip USB and Network Business Department, said: "Typically, a car module is only allowed to consume 100 micro-security in sleep (battery) mode, so if the PHY is consumed by more than 50 micrison, Increase additional circuits to avoid overtaking rated power. This results in an additional line or CAN bus to enable and disable power. We launched PHY to avoid this need to minimize components, installation, and cost. "

Microchip LAN8770 Ethergreen? Energy Saving Technology provides low power operation and ultra-low-power hibernation and wake-up mode, through optional integrated linear regulators and MicroCHIP for flexPWR technology for variable XMII and input / output power supply voltage, Further improves power efficiency, providing flexible design options and more energy-saving methods.

development tools

Advanced PHY Diagnostic Devices Provides a Troubleshooting Function for users through Microchip integration, which can be used to detect cable defects, short circuits or discontinues. The PHY diagnostic apparatus also provides a receiver signal quality indicator (SQI), overheating and undervoltage protection, comprehensive state interrupt support, and various return and test modes. The PHY series is supported by Microchip's free Lancheck online design service, and can check customer design to ensure best design practices. In addition, Autosar, Linux, and RTOS software drivers are also available.

Currently, separate 100Base-T1 to 100Base-TX Media Converter Evaluation Kit, and a 100Base-T1 sub-card evaluation board, can be with Microchip's ATSAMV71-Xult XPlained Ultra MCU Toolkit and SAMA5D3-EDS Microprocessor Toolkit use together.