DM9000_09 DAVICOM [Davicom Semiconductor, Inc.], DM9000_09 Datasheet

DM9000_09

Manufacturer Part Number

DM9000_09

Description

ISA to Ethernet MAC Controller with Integrated 10/100 PHY

Manufacturer

DAVICOM [Davicom Semiconductor, Inc.]

Datasheet

1.DM9000_09.pdf (53 pages)

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1. General Description

The DM9000 is a fully integrated and cost-effective

single chip Fast Ethernet MAC controller with a

general processor interface, a 10/100M PHY and 4K

Dword SRAM. It is designed with low power and high

performance process that support 3.3V with 5V

tolerance.

The DM9000 also provides a MII interface to connect

HPNA device or other transceivers that support MII

interface. The DM9000 supports 8-bit, 16-bit and

32-bit uP interfaces to internal memory accesses for

2. Block Diagram

Final

Version: DM9000-DS-F03

April 23, 2009

TX+/-

RX+/-

100 Base-TX

transceiver

PHYceiver

Autonegotiation

LED

100 Base-TX

10 Base-T

ISA to Ethernet MAC Controller with Integrated 10/100 PHY

Tx/Rx

PCS

different processors. The PHY of the DM9000 can

interface to the UTP3, 4, 5 in 10Base-T and UTP5 in

100Base-TX. It is fully compliant with the IEEE 802.3u Spec.

Its auto-negotiation function will automatically configure the

DM9000 to take the maximum advantage of its abilities. The

DM9000 also supports IEEE 802.3x full- duplex flow control.

This programming of the DM9000 is very simple, so user

can port the software drivers to any system easily.

MII Management

& MII Register

Control

MII

External MII

Interface

TX Machine

RX Machine

Control &Status

Registers

MAC

EEPROM

Management

Interface

Internal

Memory

SRAM

DM9000

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