LAN9115-MD datasheet(10/131 Pages) SMSC

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Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller

Datasheet

Revision 1.1 (05-17-05)

SMSC LAN9115

DATASHEET

The SMSC LAN9115 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 LAN9115 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 LAN9115 in a typical

embedded environment.

The LAN9115 is a general purpose, platform independent, Ethernet controller. The LAN9115 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 Utilizing the SMSC LAN9115

Embedded

Microprocessor/

Microcontroller

LAN9115

Magnetics

Ethernet

System

Peripherals

System Memory

System Bus

EEPROM

(Optional)

LEDS/GPIO

25MHz

XTAL

System Memory

External

PHY

MII

Magnetics

Optional

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