Microchip Technology, Inc. Gigabit Ethernet Transceiver LAN8820

The Microchip LAN8820/LAN8820i is a low-power 10BASE-T/100BASE-TX/ 1000BASE-T Gigabit Ethernet physical layer (PHY) transceiver that is fully compliant with the IEEE 802.3 and 802.3ab standards. The LAN8820/LAN8820i can be configured to communicate with an Ethernet MAC via the standard RGMII interface. It contains a full-duplex transceiver for 1000Mbps operation on four pairs of category 5 or better balanced twisted pair cable. Per IEEE 802.3-2005 standards, all digital interface pins are tolerant to 3.6V. The LAN8820/LAN8820i is configurable via hardware and software, supporting both IEEE 802.3-2005 compliant and vendor-specific register functions via SMI. The LAN8820/LAN8820i implements Auto-Negotiation to automatically determine the best possible speed and duplex mode of operation. HP Auto-MDIX support allows the use of direct connect or cross-over cables. *The LANCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account. Additional Features Highlights Single-Chip Ethernet Physical Layer Transceiver (PHY) Compliant with IEEE 802.3ab (1000BASE-T), IEEE 802.3u (Fast Ethernet), and ISO 802-3/IEEE 802.3 (10BASE-T) HP Auto-MDIX support in accordance with IEEE 802.3ab specification at 10/100/1000 Mbps operation Miniature 56-pin QFN RoHS compliant package with RGMII (8 x 8 x 0.85mm height) Flexible configurations for LED status indicators Implements Reduced Power Operating Modes Key Benefits High-Performance 10/100/1000 Ethernet Transceiver Compliant with IEEE 802.3ab (1000BASE-T) Compliant with IEEE 802.3/802.3u (Fast Ethernet) Compliant with ISO 802-3/IEEE 802.3 (10BASE-T) 10BASE-T, 100BASE-TX and 1000BASE-T support Loop-back modes Auto-negotiation (NEXT page support) Automatic polarity detection and correction Link status change wake-up detection Vendor specific register functions Supports reduced pin count RGMII interface Controlled impedance outputs Supports RGMII ID mode Four status LED outputs and configurable LED modes with support for tricolor operation Compliant with IEEE 802.3-2005 standards RGMII pins tolerant to 3.6V Integrated DSP implements adaptive equalizer, echo cancellers, and crosstalk cancellers Efficient digital baseline wander correction Power and I/Os Configurable LED outputs Various low power modes 2.5V I/O supply Miscellaneous Features IEEE 1149.1 (JTAG) boundary scan Multiple clock options - 25MHz crystal or 125MHz clock Packaging 56-pin QFN (8x8 mm) RoHS compliant package with RGMII Environmental Commercial temperature range (0°C to +70°C) Industrial temperature range (-40°C to +85°C) 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 {popup:id=271;timer= 86400}