The LAN9221-ABZJ is a high-performance 16-bit Non-PCI 10/100 Ethernet Controller with variable voltage I/O. It has been specifically designed to provide high performance and throughput for 16-bit applications. It 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 LAN9221 accommodate lower voltage I/O signalling without the need for voltage level shifters. It includes 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.
- Efficient architecture with low CPU overhead
- Easily interfaces to most 16-bit embedded CPU's
- 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
- Burst-mode read support
- Internal buffer memory can store over 200 packets
- Automatic PAUSE and back-pressure flow control
- 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
- Fully compliant with IEEE 802.3/802.3u standards
- Integrated Ethernet MAC and PHY
- 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
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