LAN9220-ABZJ

The LAN9220-ABZJ is a 16bit non-PCI small form factor 10/100 Ethernet controller with variable voltage I/O and HP Auto-MDIX support. 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 LAN9220 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. It also includes large transmit and receive data FIFOs to accommodate high latency applications. It supports features which reduce or eliminate packet loss.

• 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