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LAN9420

10/100 Base-T/TX Ethernet Controller with PCI Interface

Status: In Production

Features:

  • Optimized for embedded applications with 32-bit RISC CPUs
  • Integrated descriptor based scatter-gather DMA and IRQ deassertion timer effectively increase network throughput and reduce CPU loading
  • Integrated Ethernet MAC with full-duplex support
  • Integrated 10/100 Ethernet PHY with HP Auto-MDIX Support
  • 32-bit, 33MHz, PCI 3.0 compliant interface
  • Reduced power operating modes with PCI Power Management Specification 1.1 compliance
  • Supports multiple audio & video streams over Ethernet
  • Cable, satellite, and IP set-top boxes
  • Digital televisions
  • Digital video recorders
  • Home gateways
  • Digital media clients/servers
  • Industrial automation systems
  • Industrial/single board PC
  • Kiosk/POS enterprise equipment
  • Fully compliant with IEEE 802.3/802.3u
  • Integrated Ethernet MAC and PHY
  • 10BASE-T and 100BASE-TX support
  • Full- and Half-duplex support
  • Full-duplex flow control
  • Preamble generation and removal
  • Automatic 32-bit CRC generation and checking
  • Automatic payload padding and pad removal
  • Loop-back modes
  • One 48-bit perfect address
  • 64 hash-filtered multicast addresses
  • Pass all multicast
  • Promiscuous mode
  • Inverse filtering
  • Pass all incoming with status report
  • Wakeup packet support
  • Auto-negotiation
  • Automatic polarity detection and correction
  • Supports HP Auto-MDIX
  • Supports energy-detect power down
  • Support for 3 status LEDs
  • Receive and transmit TCP checksum offload
  • PCI Local Bus Specification Revision 3.0 compliant
  • 32-bit/33-MHz PCI bus
  • Descriptor based scatter-gather DMA enables zero-copy drivers
  • Supports PCI Bus Power Management Interface Specification, Revision 1.1
  • Supports optional wake from D3cold (via configuration strap option when Vaux is available)
  • Wake on LAN
  • Wake on link status change (energy detect)
  • Magic packet wakeup
  • 3 programmable GPIO pins
  • 2 GPO pins
  • Serial interface provided for EEPROM
  • Used to store PCI and MAC address configuration values
  • Big/Little/Mixed endian support for registers, descriptors, and buffers
  • IRQ deassertion timer
  • General purpose timer
  • Integrated 1.8V regulator
  • Available in 128-pin VTQFP RoHS Compliant package
  • Available in commercial & industrial temperature ranges
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

LAN9420/LAN9420i is a full-featured, Fast Ethernet controller which allows for the easy and cost-effective integration of Fast Ethernet into a PCI-based system. LAN9420/LAN9420i consists of a PCI Local Bus Specification Revision 3.0 compliant interface, DMA Controller, Ethernet MAC, and 10/100 Ethernet PHY.

LAN9420/LAN9420i provides full IEEE 802.3 compliance and all internal components support full/half-duplex 10BASE-T, 100BASE-TX, and manual full-duplex flow control. The descriptor based scatter-gather DMA supports usage of zero-copy drivers, effectively increasing throughput while decreasing Host load. The integrated IRQ deassertion timer allows a minimum IRQ deassertion time to be set, providing reduced Host load and greater control over service routines. Automatic 32-bit CRC generation/checking, automatic payload padding, and 2K jumbo packets (2048 byte) are supported.


*The LANCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

Additional Features

    Highlights

    • Optimized for embedded applications with 32-bit RISC CPUs
    • Integrated descriptor based scatter-gather DMA and IRQ deassertion timer effectively increase network throughput and reduce CPU loading
    • Integrated Ethernet MAC with full-duplex support
    • Integrated 10/100 Ethernet PHY with HP Auto-MDIX Support
    • 32-bit, 33MHz, PCI 3.0 compliant interface
    • Reduced power operating modes with PCI Power Management Specification 1.1 compliance
    • Supports multiple audio & video streams over Ethernet

    Target Applications

    • Cable, satellite, and IP set-top boxes
    • Digital televisions
    • Digital video recorders
    • Home gateways
    • Digital media clients/servers
    • Industrial automation systems
    • Industrial/single board PC
    • Kiosk/POS enterprise equipment

    Key Benefits

    • Integrated High-Performance 10/100 Ethernet Controller
      • Fully compliant with IEEE 802.3/802.3u
      • Integrated Ethernet MAC and PHY
      • 10BASE-T and 100BASE-TX support
      • Full- and Half-duplex support
      • Full-duplex flow control
      • Preamble generation and removal
      • Automatic 32-bit CRC generation and checking
      • Automatic payload padding and pad removal
      • Loop-back modes
      • Flexible address filtering modes
        • One 48-bit perfect address
        • 64 hash-filtered multicast addresses
        • Pass all multicast
        • Promiscuous mode
        • Inverse filtering
        • Pass all incoming with status report
      • Wakeup packet support
      • Integrated 10/100 Ethernet PHY
        • Auto-negotiation
        • Automatic polarity detection and correction
        • Supports HP Auto-MDIX
        • Supports energy-detect power down
      • Support for 3 status LEDs
      • Receive and transmit TCP checksum offload
    • PCI Interface
      • PCI Local Bus Specification Revision 3.0 compliant
      • 32-bit/33-MHz PCI bus
      • Descriptor based scatter-gather DMA enables zero-copy drivers
    • Comprehensive Power Management Features
      • Supports PCI Bus Power Management Interface Specification, Revision 1.1
      • Supports optional wake from D3cold (via configuration strap option when Vaux is available)
      • Wake on LAN
      • Wake on link status change (energy detect)
      • Magic packet wakeup
    • General Purpose I/O
      • 3 programmable GPIO pins
      • 2 GPO pins
    • Support for Optional EEPROM
      • Serial interface provided for EEPROM
      • Used to store PCI and MAC address configuration values
    • Miscellaneous features
      • Big/Little/Mixed endian support for registers, descriptors, and buffers
      • IRQ deassertion timer
      • General purpose timer
    • Single 3.3V Power Supply
      • Integrated 1.8V regulator
    • Packaging
      • Available in 128-pin VTQFP RoHS Compliant package
    • Environmental
      • Available in commercial & industrial temperature ranges
Parametrics
Name
Value
Description
10Base-T/100Base-TX Ethernet Controller with PCI interface
Ethernet Bandwidth
10/100Mbps
MAC
Yes
PHY
Yes
TX/RX RAM Buffer(Bytes)
N/A
Interrupt Pin
1
LEDs
3
# Ethernet Ports
1
Temp. Range Min. (°C)
-40
Temp. Range Max. (°C)
85
Max Speed (MHz)
33Mhz
Mixed Endian
Yes
Checksum Offload
Yes
Interface
32 bit PCI 3.0
Vdd I/O (V)
3.3

Documents

Jump to:

IBIS

Development Environment

  • Software Libraries
Software Libraries
LAN9420 Linux driver

LAN9420 Linux driver

Learn More
LAN9420 Windows Device Driver (NDIS5.1)

LAN9420 Windows Device Driver (NDIS5.1)

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LAN9420 Windows EEPROM Programming Utility

LAN9420 Windows EEPROM Programming Utility

Learn More

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
LAN9420I-NU
0.557500
1.800000
128
TQFP
14x14x1mm
Matte Tin
e3
LAN9420-NU
0.557500
1.800000
128
TQFP
14x14x1mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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