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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Feature
- 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
- 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)
- 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
Highlights
