Description
The LAN8720A/LAN8720Ai is a low-power 10BASE-T/100BASE-TX physical
layer (PHY) transceiver with variable I/O voltage that is compliant
with the IEEE 802.3-2005 standards. The LAN8720A/LAN8720Ai supports
communication with an Ethernet MAC via a standard RMII interface.
It contains a full-duplex 10-BASE-T/100BASE-TX transceiverand
supports 10Mbps (10BASE-T) and 100Mbps (100BASE-TX) operation. The
LAN8720A/LAN8720Ai implements autonegotiation 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
LAN cables.
Features
• 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 the reduced pin count RMII interface
• 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
• Additional Features
- Ability to use a low cost 25Mhz crystal for reduced BOM
• Packaging
- 24-pin QFN/SQFN (4x4 mm) Lead-Free RoHS Compliant package with
RMII
• Environmental
- Extended commercial temperature range (0°C to +85°C)
- Industrial temperature range version available (-40°C to +85°C)
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 Adapters/Servers
• Gaming Consoles
• POE Applications
