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LAN89218

In addition to an integrated Media Access Controller (MAC), Microchip’s LAN89218 includes a physical interface (PHY) and an SRAM-like slave port, which is a simple, yet highly functional Host Bus Interface. This interface provides a glueless connection to most common 32-bit and 16-bit microprocessors and microcontrollers. Additionally, a programmable interrupt controller allows optimizing performance by selecting polarity, de-assertion interval, and an open-drain output configuration. A General Purpose (GP) timer can be used to generate periodic host interrupts.

The LAN89218 also includes deep transmit and receive data FIFOs interfacing the high-speed HBI to accommodate high-bandwidth and long-latency applications. The FIFOs act as a buffer between the HBI and MAC, passing all transmitted and received data and status information on separate paths.

Integrated checksum offload engines located in the MAC enable the automatic generation of the 16-bit checksum for received and transmitted Ethernet frames, offloading these tasks from the CPU. Memory buffer architecture allows the most efficient use of memory resources by optimizing packet granularity. The Ethernet MAC also supports features for reducing/eliminating packet loss. If the FIFO gets too full, the LAN89218 can automatically generate flow control packets to the remote node (when working in full-duplex mode) or assert back-pressure on the remote node (when working in half-duplex mode). Additionally, the MAC provides enhanced programmable features designed to minimize host supervision, bus utilization, and pre- or post-message processing. These features include the ability to disable retries after a collision and checksum calculation for transmit and receive operations. With its internally separated transmit and receive data paths, the LAN89218 is optimized for high-performance applications, especially in full-duplex mode.The data paths manage both the payload and the status data.

The PHY, which interfaces to the MAC and LAN, can be configured for either 10 or 100 Mbps Ethernet operation in full- and half-duplex mode. It also supports HP Auto-MDIX for detection and correction of crossed Ethernet cabling. Microchip automotive grade devices are specifically designed, fabricated, tested, characterized, qualified, and supported for use in automotive applications. TrueAuto robustness begins with proprietary design for reliability techniques within the silicon IC itself as well as in the design of the package. Extensive technologies and processes, such as enhanced monitors, are used in fabrication of TrueAuto products in order to continuously drive improvements in accordance with Microchip's zero Defects per Million (DPM) goals. Product qualification is focused on the most demanding customer expectations and exceeds many of the automotive reliability standards including AEC-Q100. Microchip TrueAuto services are provided by a dedicated organization composed of sales, marketing, applications engineering, operations, quality, and product support personnel specialized in meeting the requirements of the automotive customer.

Documents

LAN89218 - High-Performance Single-Chip 10/100 Ethernet Controller	Data Sheets	12/01/2015	1184KB
AN2157 - Transient Protection in Power Over Ethernet Applications	AppNote	05/24/2016	229KB
LAN89218 Sell Sheet	Brochures	12/18/2013	793KB
LAN89218 IBIS Model	IBIS	12/09/2011	266KB
LAN91xx/LAN92xx/LAN9311/LAN9312 eBoot Driver for XScale Processor	Software Library	06/01/2007
LAN91xx/LAN92xx/LAN9311/LAN9312 Linux Driver on SH3 Processor	Software Library	08/22/2008
LAN91xx/LAN92xx/LAN9311/LAN9312 Linux driver on XScale processor	Software Library	08/22/2008
LAN91xx/LAN92xx/LAN9311/LAN9312 Windows CE 5.0 & 6.0 Driver	Software Library	01/29/2014
Design Guide, Ethernet Front End (Generic)	Software Library	08/24/2013	1KB
Design Guide, General ESD Guidelines	Software Library	08/24/2013	1KB
Design Guide, General PCB Design Guidelines	Software Library	08/24/2013	1KB
Schematic Design Guide, Xtal Load Capacitance Calculation	Software Library	08/24/2013	1KB
Component Placement Checklist, LAN89218, 100-pin TQFP Package	Design Checklist	08/24/2013	1KB
Schematic Checklist, LAN89218, 100-pin TQFP Package	Design Checklist	08/24/2013	1KB
LAN89218 100-pin TQFP Package Component Placement Checklist	Design Checklist	06/29/2009	134KB
LAN89218 100-pin TQFP Package Routing Checklist	Design Checklist	06/29/2009	92KB
LAN89218 TQFP Rev C Schematic Checklist	Design Checklist	01/15/2010	136KB
Routing Checklist, LAN89218, 100-pin TQFP Package	Design Checklist	08/24/2013	1KB
LAN89218 Evaluation Board	Gerber Files	04/16/2012	447KB
LAN89218 Evaluation Board	Schematics	04/16/2012	2569KB
LAN89218 Evaluation Board	Schematics	04/16/2012	66KB

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RoHS Information

PartNumber	DeviceWeight	ShippingWeight	LeadCount	PackageType	PackageWidth	SolderComposition	JEDECIndicator	RoHS	ChinaEFUP
LAN89218AQR-B	0.580400	1.600000	100	LQFP	14x14x1.6mm	Matte Tin	e3
LAN89218AQ-B	0.580400	6.666667	100	LQFP	14x14x1.6mm	Matte Tin	e3