General Description
●The LAN9220 is a full-featured, single-chip 10/100 Ethernet controller designed for embedded
●applications where performance, flexibility, ease of integration and system cost control are required.
●The LAN9220 is fully IEEE 802.3 10BASE-T and 802.3u 100BASE-TX compliant, and supports HP
●Auto-MDIX. The variable voltage I/O signals of the LAN9220 accommodate lower voltage I/O signalling without the need for voltage level shifters.
●PRODUCT FEATURES
●Highlights
● Efficient architecture with low CPU overhead
● Easily interfaces to most 16-bit embedded CPU’s
● 1.8V to 3.3V variable voltage I/O accommodates wide range of I/O signalling without voltage level shifters
● Integrated PHY with HP Auto-MDIX support
● Integrated checksum offload engine helps reduce CPU load
● Low pin count and small body size package for small form factor system designs
●Target Applications
● Cable, satellite, and IP set-top boxes
● Digital video recorders
● Video-over IP solutions, IP PBX & video phones
● Wireless routers & access points
● Audio distribution systems
● Printers, kiosks, security systems
● General embedded applications
●Key Benefits
● Non-PCI Ethernet controller for standard performance applications
●— 16-bit interface
●— Burst-mode read support
● Minimizes dropped packets
●— Internal buffer memory can store over 200 packets
●— Automatic PAUSE and back-pressure flow control Minimizes CPU overhead
●— Supports Slave-DMA
●— Interrupt Pin with Programmable Hold-off timer
● Reduces system cost and increases design flexibility
● SRAM-like interface easily interfaces to most embedded CPU’s or SoC’s
● Reduced Power Modes
●— Numerous power management modes
●— Wake on LAN
●— Magic packet wakeup
●— Wakeup indicator event signal
●— Link Status Change
● Single chip Ethernet controller
●— Fully compliant with IEEE 802.3/802.3u standards
●— Integrated Ethernet MAC and PHY
●— 10BASE-T and 100BASE-TX support
●— Full- and Half-duplex support
●— Full-duplex flow control
●— Backpressure for half-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
●— Disable reception of broadcast packets
● Integrated 10/100 Ethernet PHY
●— Supports HP Auto-MDIX
●— Auto-negotiation
●— Supports energy-detect power down
● Host bus interface
●— Simple, SRAM-like interface
●— 16-bit data bus
●— 16Kbyte FIFO with flexible TX/RX allocation
●— One configurable host interrupt
● Miscellaneous features
●— Small form factor, 56-pin QFN lead-free RoHS Compliant package
●— Integrated 1.8V regulator
●— Integrated checksum offload engine
●— Mixed endian support
●— General Purpose Timer
●— Optional EEPROM interface
●— Support for 3 status LEDs multiplexed with Programmable GPIO signals
● Single 3.3V Power Supply with Variable Voltage I/O
● 0°C to +70°C Commercial Temperature Support
●Applications
●The LAN9220 is well suited for many embedded applications, including:
● Printers, kiosks, POS terminals and security systems
● Audio distribution systems
● General embedded systems
● Basic cable, satellite and IP set-top boxes
● Voice-over-IP solutions
