LAN9221-ABZJ datasheet(11/151 Pages) SMSC

Part #	LAN9221-ABZJ

Description	High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O

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Manufacturer	SMSC [SMSC Corporation]

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High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O

Datasheet

SMSC LAN9221/LAN9221i

11

Revision 2.6 (12-04-08)

DATASHEET

1.1

Block Diagram

The SMSC LAN9221/LAN9221i integrated 10/100 MAC/PHY controller is a peripheral chip that

performs the function of translating parallel data from a host controller into Ethernet packets. The

LAN9221/LAN9221i 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.

The diagram shown above, describes a typical system configuration of the LAN9221/LAN9221i in a

typical embedded environment.

The LAN9221/LAN9221i is a general purpose, platform independent, Ethernet controller. The

LAN9221/LAN9221i consists of four major functional 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

LAN9221/

LAN9221i

Magnetics

Ethernet

System

Peripherals

System Memory

EEPROM

(Optional)

LEDS/

GPIO

25MHz

XTAL

System Bus

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