User manual

LPC3250 Developer’s Kit v2 - User’s Guide

Page 20

4.7 SP6: Ethernet Interface

The board has an Ethernet interface, J11, which is a RJ45 connector with integrated magnetics. There

is also provision on the board for connecting a PoE interface. All signals can be accessed via

expansion pads, J12. Five 0 ohm resistors have to be removed in that case for isolating J11 from the

new connector (this is because J11 is not capable of handling a PoE interface so a new RJ45

connector must added). See picture below for where to find the relevant components on the board.

Figure 6 – Debug Interfaces

PoE modules that can be used for testing can for example be found at

http://www.silvertel.com/poe_products.htm. Select a version delivering +5V with enough current

capability for the specific application in mind. For example, using USB Host with power hungry external

devices will require more current. In most situations a 9-10W module will be sufficient.

Besides the PoE module, a RJ45 capable of handling PoE is also needed.

PoE Connector

J12, pin 1 leftmost

Isolation Resistors

R51/52/53/56/57

RJ45 with Magnetics

J11