SMSC 公司的LAN88710是采用HP Auto-MDIX 和flexPWR®技術的MII/MRII 10/100以太網收發器,并集成1.2V線性電壓穩壓器和ESD保護元件,具有業界最小的占位面積,比現有的SMSC收發器功耗要低40%以上,I/O電壓從3.6V到1.6V,主要用于消費類電子產品如HDTV,STB,DVR,PVR,以及網絡打印機和服務器,游戲機,通信和POS終端與工業和企業應用.本文介紹了LAN88710主要特性, 架構框圖, 系統方框圖, 簡化應用框圖, 銅雙絞線接口框圖以及EVB8710 PHY評估板主要特性,電路圖和材料清單.
LAN8710: MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology in a Small Footprint
SMSCs LAN8710 and LAN8720 are high-performance, small-footprint, low-power 10BASE-T/100BASE-TX transceivers specifically designed for todays consumer electronics, industrial and enterprise applications. The LAN8710/8720 are the industrys smallest footprint solutions with up to 40% lower power consumption than existing SMSC transceivers. The LAN8710/8720 have an integrated voltage regulator and ESD protection components to help reduce Bill of Material (BOM) costs.
The LAN8710 connects to the MAC layer using a variable voltage, digital standard MII or RMII interface, while the LAN8720 connects via an RMII interface. Both devices support HP Auto-MDIX*, employ SMSCs proprietary flexPWR technology and are available in both extended commercial (0° to 85°C) and industrial (-40° to 85°C) temperature range options.
LAN8710亮點:
Excellent ESD protection levels exceed IEC specifications without external protection devices
Integrated 1.2V linear regulator
Incorporates flexPWR® technology
Industry leading power consumption :Up to 40% reduction from existing SMSC solutions
Flexible I/O voltage range from 3.6V to 1.6V
Extremely low energy detect standby mode
Low-Cost 25MHz crystal for MII/RMII
Industrial and extended commercial temperature range options available
Compact package options:
LAN8710: 5x5mm 32-pin QFN package (MII/RMII)
LAN8720: 4x4mm 24-pin QFN package (RMII only)
LAN8710目標應用:
High-definition TV (HDTVs)
Set-top Boxes (STBs)
Digital Video Recorders (DVRs)
Personal Video Recorders (PVRs)
Network Printers and Servers
Gaming Consoles
Telecommunications
POS Terminals
Industrial
圖1.LAN8710/LAN8710i 架構框圖
圖2.LAN8710/LAN8710i系統方框圖
圖3.LAN8710簡化應用框圖
圖4.LAN8710銅雙絞線接口框圖
EVB8710 PHY評估板
The EVB8710 is a PHY Evaluation Board (EVB) that interfaces a MAC controller to the LAN8710 Ethernet PHY via a standard 40-pin MII connector. The LAN8710 is connected to an RJ-45/Integrated Magnetics Ethernet Jack for 10/100 connectivity.
EVB8710 PHY評估板主要特性:
Standard RJ-45 Connector with integrated magnetics and LED indicators for Link and Activity
On board LED indicators for
Speed 100
Full Duplex
Supports MII and RMII operation
Interfaces through 40-pin Connector
Powered by 5.0V from the 40-Pin Connector
Includes Probe Points on All MII/RMII Data and Control Signals for Troubleshooting
Includes 25MHz Crystal for Internal PHY Reference; RX_CLK is Supplied to the 40-Pin Connector
Sources RMII REF_CLK
Supports user configuration options including PHY address selection
Integrated 3.3V Regulator
EVB8710 PHY評估板應用:
Verify MAC to PHY interface
Support testing of FPGA implementations of MAC
Assist interoperability test of various networks
Verify performance of HP AutoMDIX feature
圖5.EVB8710 PHY評估板外形圖
圖6.EVB8710 PHY評估板電路圖
EVB8710 PHY評估板材料清單(BOM):
