LAN7850/8JX [Microchip]

Microchip's LAN7850 is a USB High Speed or HSIC to 10/100/1000 Gigabit Ethernet bridge providing an ultra high-performance and cost-effective USB to Ethernet connectivity solution. The LAN7850 contains an integrated 10/100/1000 Gigabit Ethernet PHY, USB PHY, Hi-Speed USB 2.0 device controller, 10/100/1000 Gigabit Ethernet MAC, Integrated OTP, EEPROM controller. The device supports 10BASE-T, 100BASE-TX and 1000BASE-T Ethernet and implements Control, Interrupt, Bulk-in and Bulk-out USB endpoints. The Ethernet controller supports auto-negotiation, auto-polarity correction, HP Auto-MDIX† support and is compliant with IEEE 802.3/802.3u/802.3ab standards.

USB and HSIC based networking provide flexibility for the routing and placement of network connections anywhere in the system. USB-based solutions leverage the existing USB stack for the Ethernet driver. The LAN7850 is also available with a wide range of drivers including Windows^®, Mac^® and Linux^®.

The LAN7850 also offers Microchip’s NetDetach™ and UniClock™ technologies. NetDetach allows for reduced power by enabling the host CPU to enter a low-power state when Ethernet is inactive. UniClock simplifies the clocking scheme and reduces system BOM cost by using a single 25MHz crystal for both USB and Ethernet connectivity. Multiple power management features are provided, including various low-power modes and Magic Packet™, Wake-on-LAN (WoL) and Link Status Change wake events. MSFT QOAC (On Always Connected) is also supported. These wake events can be programmed to initiate a USB remote wakeup and if desired, also generate a hardware PME event. The device is available in commercial (0°C to 70°C) and industrial temperature range (-40°C to 85°C) options.

†HP Auto-MDIX eliminates the need for special "crossover" cables when connecting LAN devices together.

Looking for a companion processor, the SAMA5D2 ARM(r) Cortex A5 has an on-chip HSIC peripheral. The SAMA5D2 Xplained Ultra development board features an HSIC connection allowing use with the EVB-LAN7850

Microchip's complimentary and confidential MicroCHECK 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 and requires a myMicrochip account.

Common Applications:
• Embedded Systems
• Consumer Electronics Devices
• Netbooks/Smartbooks/MIDs
• Docking Stations
• Digital TVs (DTVs)
• Set-Top Boxes
• Personal Video Recorders (PVRs)
• Network Printers
• USB Port Replicators
• Stand-alone USB to Ethernet Dongles
• Industrial Designs
• Cameras

A driver supporting this product is already present in the Linux mainline kernel. Specific backports, when available, can be found within the drivers listed here.