Ethernet Module

Introduction

• This project aims to develop an Ethernet Module, to be used in conjunction with a 8/16 bits embedded system such as the dsPic33F development board.
• The entire Ethernet Module consists of:

1. Hardware: a LAN card based on Davicom DM9000A chip
2. Software: a TCP/IP stack based on uIP 1.0

References

DM9000A

• DM9000A Description

DM9000A Datasheet

• Application Circuit
• Layout Guidelines
• Application Note
• DM9000A Official Drivers

uIP

• uIP Description
• uIP Documentation
• Download

lwIP

• lwIP Description

HTML

• W3 Schools: Learning how to write HTML and JavaScript
• Nvu: Open source HTML Editor

SNMP

• SNMP Link: Information on SNMP Agents
• IANA: Applying a Private Enterprise Number

Hardware

Component List

Table 2.1 Component List

Special Item	Description	Quantity
DM9000AEP	Ethernet Controller	1
HR911102A	RJ45 Connector with Integrated Magnetics for 10/100 Base-TX	1
93LC46B	http://ww1.microchip.com/downloads/en/DeviceDoc/21749F.pdf	1 (Optional)
25MHz Crystal	Crystal	1
22pF	For Crystal Use	2
220uF	For RXVDD25/TXVDD25	1
49.9ohm	For RX+/RX-/TX+/TX-	4
6.8kohm	For BGRES/BGGND	1
510ohm	For LEDs	2

Circuit and PCB

in gEDA format and its gEDA sym and footprints

Software

Driver

Base in Freertos and dspic platform, see http://chungyan5.no-ip.org/vc/tags/1.07.08/demo_posix/dspic/drivers/dm9000a.c?root=freertos_posix&view=markup