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LAN9420 Datasheet, PDF (1/171 Pages) SMSC Corporation – Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface | |||
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LAN9420/LAN9420i
Single-Chip Ethernet Controller
with HP Auto-MDIX Support and
PCI Interface
PRODUCT 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
â Fully compliant with IEEE802.3/802.3u
â Integrated Ethernet MAC and PHY
â 10BASE-T and 100BASE-TX support
â Full- and half-duplex support
â Full-duplex flow control
â Preamble generation and removal
â Automatic 32-bit CRC generation and checking
â Automatic payload padding and pad removal
â Loop-back modes
â Flexible address filtering modes
â One 48-bit perfect address
â 64 hash-filtered multicast addresses
â Pass all multicast
Datasheet
â Promiscuous mode
â Inverse filtering
â Pass all incoming with status report
â Wakeup packet support
â Integrated 10/100 Ethernet PHY
â Auto-negotiation
â Automatic polarity detection and correction
â Supports HP Auto-MDIX
â Supports energy-detect power down
â Support for 3 status LEDs
â Receive and transmit TCP checksum offload
 PCI Interface
â PCI Local Bus Specification Revision 3.0 compliant
â 32-bit/33-MHz PCI bus
â Descriptor based scatter-gather DMA enables zero-
copy drivers
 Comprehensive Power Management Features
â Supports PCI Bus Power Management Interface
Specification, Revision 1.1
â Supports optional wake from D3cold
(via configuration strap option when Vaux is available)
â Wake on LAN
â Wake on link status change (energy detect)
â Magic packet wakeup
 General Purpose I/O
â 3 programmable GPIO pins
â 2 GPO pins
 Support for Optional EEPROM
â Serial interface provided for EEPROM
â Used to store PCI and MAC address configuration
values
 Miscellaneous Features
â Big/Little/Mixed endian support for registers,
descriptors, and buffers
â IRQ deassertion timer
â General purpose timer
 Single 3.3V Power Supply
â Integrated 1.8V regulator
 Packaging
â Available in 128-pin VTQFP Lead-free RoHS Compliant
package
 Environmental
â Available in commercial & industrial temperature ranges
SMSC LAN9420/LAN9420i
DATASHEET
Revision 1.6 (07-18-11)
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