LAN9221/LAN9221i
High-Performance 16-bit Non-PCI
10/100 Ethernet Controller with
Variable Voltage I/O
PRODUCT FEATURES
Datasheet
Highlights
Single chip Ethernet controller
Optimized for high performance applications
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 and DVD recorder/players
Digital TV
Digital media clients/servers and home gateways
Video-over IP solutions, IP PBX & video phones
Wireless routers & access points
High-end audio distribution systems
Key Benefits
Non-PCI Ethernet controller for high performance
applications
— 16-bit interface with fast bus cycle times
— 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
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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
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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
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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
Commercial and Industrial Temperature Support
Numerous power management modes
Wake on LAN
Magic packet wakeup
Wakeup indicator event signal
Link Status Change
SMSC LAN9221/LAN9221i
DATASHEET
Revision 2.9 (03-01-12)
