LAN9420

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.

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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Integrated 1.8V regulator
  • Packaging Available in 128-pin VTQFP RoHS Compliant package
  • Available in 128-pin VTQFP RoHS Compliant package
  • Environmental Available in commercial & industrial temperature ranges
  • Available in commercial & industrial temperature ranges
Parameter
Parameter Name Value Value
Description 10Based-T/100Based-TX Ethernet Controller with PCI interface 10Based-T/100Based-TX Ethernet Controller with PCI interface
Ethernet Bandwidth 10Base-T/ 100Base-TX 10Base-T/ 100Base-TX
MAC Yes Yes
PHY Yes Yes
TX/RX RAM Buffer(Bytes) N/A N/A
Interrupt Pin 1 1
LEDs 3 3
Op. Voltage (V) 3.3 3.3
# Ethernet Ports 1 1
Temp. Range Min. (°C) -40 -40
Temp. Range Max. (°C) 85 85
Max Speed (MHz) 33Mhz 33Mhz
Mixed Endian Yes Yes
Checksum Offload Yes Yes
Interface1 32 bit PCI 3.0 32 bit PCI 3.0
Vdd I/O (V) 3.3 3.3
Documents
LAN9420/LAN9420i Single-Chip Ethernet Controller with HP Auto-MDIX Support andData Sheets07/18/20111827KB
AN2157 - Transient Protection in Power Over Ethernet ApplicationsAppNote05/24/2016229KB
AN8.13 - Suggested MagneticsAppNote06/28/2011240KB
LAN9420 IBIS models 9420_128.ibsIBIS08/17/2007385KB
LAN9420 Linux driverSoftware Library01/22/2009
LAN9420 Windows Device Driver (NDIS5.1)Software Library10/28/2010
LAN9420 Windows EEPROM Programming UtilitySoftware Library11/12/2010
LAN9420 128-pin VTQFP Package Component Placement ChecklistDesign Checklist04/09/200862KB
LAN9420 128-pin VTQFP Package Routing ChecklistDesign Checklist04/09/200854KB
LAN9420 128-pin VTQFP Rev A Schematic ChecklistDesign Checklist04/09/200890KB
LAN9420I 128-pin VTQFP Package Component Placement ChecklistDesign Checklist04/09/200883KB
LAN9420I 128-pin VTQFP Package Routing ChecklistDesign Checklist04/09/200854KB
LAN9420I 128-pin VTQFP Rev A Schematic ChecklistDesign Checklist04/09/2008101KB
LAN9420/LAN9420i Single-Chip Ethernet Controller with HP Auto-MDIX Support andProduct Briefs07/18/2011226KB
LAN9420/LAN9420i Reference Design Bill of MaterialsSchematics04/08/200818KB
LAN9420/LAN9420i Reference Design SchematicSchematics04/02/200848KB
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RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
LAN9420I-NU0.5575002.888889128TQFP14x14x1mmMatte Tine3
LAN9420-NU0.5575002.888889128TQFP14x14x1mmMatte Tine3
LAN9420/LAN9420i Single-Chip Ethernet Controller with HP Auto-MDIX Support and LAN9420
AN2157 LAN9353
AN8.13 LAN9355
LAN9420 128-pin VTQFP Package Component Placement Checklist LAN9420
LAN9420 128-pin VTQFP Package Routing Checklist LAN9420
LAN9420 128-pin VTQFP Rev A Schematic Checklist LAN9420
LAN9420I 128-pin VTQFP Package Component Placement Checklist LAN9420
LAN9420I 128-pin VTQFP Package Routing Checklist LAN9420
LAN9420I 128-pin VTQFP Rev A Schematic Checklist LAN9420
LAN9420/LAN9420i Single-Chip Ethernet Controller with HP Auto-MDIX Support and LAN9420
LAN9420/LAN9420i Reference Design Bill of Materials LAN9420
LAN9420/LAN9420i Reference Design Schematic LAN9420
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