Microchip Technology LAN8741A-EN

General Description

The LAN8710/LAN8710i is a low-power 10BASE-T/100BASE-TX physical layer (PHY) transceiver that transmits and receives on unshielded twisted-pair cable. A typical system application is shown in Figure 1.2. It is available in both extended commercial and industrial temperature operating versions.
The LAN8710/LAN8710i interfaces to the MAC layer using a variable voltage digital interface via the standard MII (IEEE 802.3u). Support for RMII makes a reduced pin-count interface available. The digital interface pins are tolerant to 3.6V.
The LAN8710/LAN8710i implements Auto-Negotiation to automatically determine the best possible speed and duplex mode of operation. HP Auto-MDIX support allows using a direct connect LAN cable, or a cross-over path cable.
The LAN8710 referenced throughout this document applies to both the extended commercial temperature and industrial temperature components. The LAN8710i refers to only the industrial temperature component.

PRODUCT FEATURES

Highlights
■ Single-Chip Ethernet Physical Layer Transceiver
(PHY)
■ Comprehensive flexPWR® Technology
— Flexible Power Management Architecture
— Power savings of up to 40% compared to competition
— LVCMOS Variable I/O voltage range: +1.6V to +3.6V
— Integrated 1.2V regulator with disable feature
■ HP Auto-MDIX support
■ Small footprint 32 pin QFN lead-free RoHS compliant
package (5 x 5 x 0.9mm height)

Target Applications
■ Set-Top Boxes
■ Networked Printers and Servers
■ Test Instrumentation
■ LAN on Motherboard
■ Embedded Telecom Applications
■ Video Record/Playback Systems
■ Cable Modems/Routers
■ DSL Modems/Routers
■ Digital Video Recorders
■ IP and Video Phones
■ Wireless Access Points
■ Digital Televisions
■ Digital Media Adaptors/Servers
■ Gaming Consoles
■ POE Applications

Key Benefits

■ High-Performance 10/100 Ethernet Transceiver
— Compliant with IEEE802.3/802.3u (Fast Ethernet)
— Compliant with ISO 802-3/IEEE 802.3 (10BASE-T)
— Loop-back modes
— Auto-negotiation
— Automatic polarity detection and correction
— Link status change wake-up detection
— Vendor specific register functions
— Supports both MII and the reduced pin count RMII
interfaces
■ Power and I/Os
— Various low power modes
— Integrated power-on reset circuit
— Two status LED outputs
— Latch-Up Performance Exceeds 150mA per EIA/JESD
78, Class II
— May be used with a single 3.3V supply
■ Packaging
— 32-pin QFN (5x5 mm) Lead-Free RoHS Compliant
package with MII and RMII
■ Environmental
— Extended Commercial Temperature Range (0°C to
+85°C)
— Industrial Temperature Range (-40°C to +85°C) version
available (LAN8710i)