LAN9218 datasheet(10/130 Pages) SMSC

10 / 130 page

High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX

Datasheet

Revision 1.5 (07-18-06)

SMSC LAN9218

DATASHEET

The SMSC LAN9218 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 LAN9218 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 LAN9218 in a typical

embedded environment.

The LAN9218 is a general purpose, platform independent, Ethernet controller. The LAN9218 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)

1.1

Compatibility with First-generation LAN9118 Family Devices

The LAN9218 is driver-, register-, and footprint-compatible with previous generation LAN9118 Family

devices. Drivers written for these products will work with the LAN9218. However, in order to support

HP Auto-MDIX, other components such as the magnetics and the passive components around the

magnetics need to change, and supporting these changes does require a minor PCB change. A

reference design for the LAN9218 will be available on SMSC’s website.

Figure 1.1 System Block Diagram

Microprocessor/

Microcontroller

LAN9218

Magnetics

Ethernet

System

Peripherals

System Memory

System Bus

EEPROM

(Optional)

LEDS/GPIO

25MHz

XTAL

System Memory

LAN9218 bảng dữ liệu(PDF) 10 Page - SMSC Corporation