LAN8820

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.

Features
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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)
  • 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
Parameter
Parameter Name Value Value
Description RGMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support RGMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support
Ethernet Bandwidth 10Base-T/ 100Base-TX/1000Base-T 10Base-T/ 100Base-TX/1000Base-T
Op. Voltage (V) 3.3 3.3
LEDs 4 4
# of Ethernet Ports 1 1
Interface RGMII RGMII
Temp. Range Min. (°C) -40 -40
Temp. Range Max. (°C) 85 85
HP-Auto MDIX Yes Yes
Interface1 RGMII RGMII
Supply Voltage (V) 1.2 1.2
Vdd I/O (V) 2.5 2.5
Documents
LAN8820/LAN8820i RGMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX SuppoData Sheets10/27/2015582KB
AN2157 - Transient Protection in Power Over Ethernet ApplicationsAppNote05/24/2016229KB
AN9.11 - Understanding the Chip ID and Revision RegistersAppNote08/07/2001110KB
LAN8820 JTAG Model.bsdlBoundaryScanBSDL02/27/20152KB
IBIS files for LAN8820-AZBJIBIS04/13/2015354KB
IBIS files for LAN8820i-AZBJIBIS04/13/2015353KB
LAN8820 Placement Checklist QFN Rev ADesign Checklist03/27/20145KB
LAN8820 Routing Checklist QFN Rev ADesign Checklist03/27/2014625KB
Schematic Checklist LAN8820 QFN Rev CDesign Checklist12/02/2014100KB
LAN8820 Reference Design Schematic - rev1.1Schematics02/25/201530KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
LAN8820-ABZJ56VQFN0C to +70CTRAY4.433.693.353.243.20
LAN8820-ABZJ-TR56VQFN0C to +70CT/R4.493.743.403.283.25
LAN8820I-ABZJ56VQFN-40C to +85CTRAY5.094.243.863.733.69
LAN8820I-ABZJ-TR56VQFN-40C to +85CT/R5.164.303.913.773.73
相关开发工具
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
LAN8820-ABZJ0.1824601.19230856VQFN8x8x0.9Matte Tine3
LAN8820-ABZJ-TR0.1824600.30000056VQFN8x8x0.9Matte Tine3
LAN8820I-ABZJ-TR0.1824600.30000056VQFN8x8x0.9Matte Tine3
LAN8820I-ABZJ0.1824601.19230856VQFN8x8x0.9Matte Tine3
LAN8820/LAN8820i RGMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Suppo LAN8820
AN2157 LAN9353
AN9.11 LAN91C110
LAN8820 JTAG Model.bsdl LAN8820
LAN8820 Placement Checklist QFN Rev A LAN8820
LAN8820 Routing Checklist QFN Rev A LAN8820
Schematic Checklist LAN8820 QFN Rev C LAN8820
LAN8820 Reference Design Schematic - rev1.1 LAN8820