LAN9220 datasheet(5/142 Pages) MICROCHIP

Part #	LAN9220

Description	16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support

PDF	142 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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5 / 142 page

 2006-2017 Microchip Technology Inc.

DS00002417A-page 5

LAN9220

1.1

Block Diagram

The Microchip LAN9220 integrated 10/100 MAC/PHY controller is a peripheral chip that performs the function of trans-

lating parallel data from a host controller into Ethernet packets. The LAN9220 Ethernet MAC/PHY controller is designed

and optimized to function in an embedded environment. All communication is performed with programmed I/O transac-

tions using the simple SRAM-like host interface bus.

The diagram shown above, describes a typical system configuration of the LAN9220 in a typical embedded environ-

ment.

The LAN9220 is a general purpose, platform independent, Ethernet controller. The LAN9220 consists of four major func-

tional blocks. The four blocks are:

• 10/100 Ethernet PHY

• 10/100 Ethernet MAC

• RX/TX FIFOs

• Host Bus Interface (HBI)

FIGURE 1-1:

SYSTEM BLOCK DIAGRAM

Microprocessor/

Microcontroller

LAN9220

Magnetics

Ethernet

System

Peripherals

System Memory

EEPROM

(Optional)

LEDS/

GPIO

25MHz

XTAL

System Bus

LAN9220 Datasheet(PDF) 5 Page - Microchip Technology