LAN8720 芯片功能簡介
SMSC LAN8720/LAN8720i Revision 1.0 (05-28-09)
DATASHEET
Datasheet
PRODUCT FEATURES
LAN8720/LAN8720i
Small Footprint RMII 10/100
Ethernet Transceiver with HP
Auto-MDIX Support
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
? HP Auto-MDIX support
? Miniature 24 pin QFN lead-free RoHS compliant
package (4 x 4 x 0.85mm 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
? 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
? Advanced Features
— Able to use a low cost 25Mhz crystal for the lowest
eBOM
? Packaging
— 24-pin QFN (4x4 mm) Lead-Free RoHS Compliant
package with RMII
? Environmental
— Extended Commercial Temperature Range (0°C to
+85°C)
— Industrial Temperature Range (-40°C to +85°C) version
available (LAN8720i)