Microchip Technology LAN9220 & LAN9221 10/100 Ethernet Controllers
Microchip Technology LAN9220 and LAN9221 10/100 Ethernet Controllers are designed for embedded applications where performance, flexibility, ease of integration, and system cost control are required. The LAN9220 and LAN9221 are fully IEEE 802.3 10BASE-T and 802.3u 100BASE-TX compliant, and support 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. The LAN9220 provides an optimized price/performance ratio, and the LAN9221 is optimized for high-performance applications.
The LAN9220 and LAN9221 include an integrated Ethernet MAC and PHY with a high-performance SRAM-like slave interface. The simple, yet highly functional host bus interface provides a glue-less connection to most common 16-bit microprocessors and microcontrollers as well as 32-bit microprocessors with a 16-bit external bus. The integrated checksum offload engines enable the automatic generation of the 16-bit checksum for received and transmitted Ethernet frames, offloading the task from the CPU. The LAN9220 and LAN9221 also include large transmit and receive data FIFOs to accommodate high latency applications. In addition, the memory buffer architecture of these devices allow highly efficient use of memory resources by optimizing packet granularity.
The Microchip Technology LAN9220 and LAN9221 Ethernet Controllers are offered in a low-profile, 56-pin QFN package with a commercial grade 0°C to +70°C operating temperature range. The LAN9220i and LAN9221i variants of these devices feature an extended, industrial-grade -40°C to +85°C operating temperature range.
Features
- 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 CPUs or SoCs
- 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 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
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
Related Products
Microchip Technology Wired Connectivity
Ethernet solutions for robust, reliable, high-speed connectivity and control.
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