LAN89218 datasheet(5/148 Pages) MICROCHIP

Part #	LAN89218

Description	High-Performance Single-Chip 10/100 Ethernet Controller for Automotive Applications

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Manufacturer	MICROCHIP [Microchip Technology]

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DS60001255B-page 5

LAN89218

1.0

GENERAL DESCRIPTION

The LAN89218 is a full-featured, single-chip 10/100 Ethernet controller that has been designed to provide the highest

performance possible for 32/16-bit applications. The LAN89218 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 and 32-bit microprocessors and microcontrollers. 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 LAN89218 also includes large transmit and receive data FIFOs with a high-

speed host bus interface to accommodate high bandwidth, high latency applications. In addition, the LAN89218

memory buffer architecture allows highly efficient use of memory resources by optimizing packet granularity.

Applications

The LAN89218 is well suited for many high performance automotive applications, including:

• Diagnostic interface (for dealership service bay)

• Fast software download interface (e.g. OBD connector)

• Gateway service interface (dealership, aftermarket repair shop)

• In-vehicle engineering development interface

• Vehicle manufacturing test interface (production plant assembly line)

• Legislated inspections (emissions check, safety inspections)

The LAN89218 also supports features which reduce or eliminate packet loss. Its internal 16-kByte SRAM can hold

over 200 received packets. If the receive FIFO gets too full, the LAN89218 can automatically generate flow control

packets to the remote node, or assert back-pressure on the remote node by generating network collisions.

The LAN89218 supports numerous power management and wakeup features. The LAN89218 can be placed in a

reduced power mode and can be programmed to issue an external wake signal via several methods, including “Magic

Packet”, “Wake on LAN” and “Link Status Change”. This signal is ideal for triggering system power-up using remote

Ethernet wakeup events. The device can be removed from the low power state via a host processor command.

The LAN89218 integrated 10/100 MAC/PHY controller performs the function of translating parallel data from a host

controller into Ethernet packets. The LAN89218 Ethernet MAC/PHY controller is designed and optimized to function

in an embedded environment. All communication is performed with programmed I/O transactions using the simple

SRAM-like host interface bus.

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Manufacturer	Part #	Datasheet	Description
Microchip Technology	LAN9117	1Mb / 114P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller 06/23/16
SMSC Corporation	LAN9118	1Mb / 126P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
	LAN9117	1Mb / 131P	HIGH PERFORMANCE SINGLE-CHIP 10/100 NON-PCI ETHERNET CONTROLLER
	LAN9117	1Mb / 136P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
	LAN9118	1Mb / 129P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Microchip Technology	LAN9118	1,015Kb / 109P	High Performance Single-Chip 10/100 Non-PCI Ethernet Controller 06/23/16
SMSC Corporation	LAN9218	1Mb / 133P	High-Performance Single- Chip 10/100 Ethernet Controller with HP Auto-MDIX
	LAN9218	1Mb / 130P	High-Performance Single- Chip 10/100 Ethernet Controller with HP Auto-MDIX
	LAN9118	213Kb / 6P	HIGH PERFORMANCE SINGLE CHIP 10/100NON PCI ETHERNET CONTROLLER
	LAN9218	1Mb / 134P	High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX Support