LAN8820中文资料Gigabit Ethernet Transceiver数据手册Microchip规格书

描述 Description

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.



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特性 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
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应用 Application

·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

简介

LAN8820属于集成电路（IC）的驱动器接收器收发器。由制造生产的LAN8820驱动器，接收器，收发器该系列产品的主要功能是提供必需的硬件资源，以通过延长电缆或印制线进行通信。确切的功能会因所采用的通信协议而异，可能包括诸如瞬态抑制之类的功能，这些功能对于通信用途可能并非绝对必要，但对于可能的使用环境却是明智之选。