LAN9221-ABZJ

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. 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
• 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
• Loop-back modes