User Manual

Table Of Contents

Ports

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Digi Connect EM & Wi-EM Hardware Reference

Ethernet Port (P12)

The Ethernet port of the Digi Connect EM embedded module (labeled P12) is an 8-pin

RJ-45 jack meeting the requirements of ISO 8877 for 10/100Base-T. When two

descriptions are shown for a pin, the second is for use with 802.3af powered Ethernet.

For additional information about the 802.3af standard, refer to the corresponding IEEE

specification.

Note

The development board provides a reference design of a POE (Power Over

Ethernet) power supply. A schematic for this reference design is installed by

the setup program on the CD.

GPIO Port (P3)

The GPIO port is a 10-pin male right-angle connector (labeled P3). See the following

figure and table for pin orientation and pin assignments.

GPIO Port Pin Orientation

Ethernet Pin Assignments

Pin Signal Name

Figure

RJ-45 (P12)

1 TXD+ (Transmit Data)

2 TXD- (Transmit Data)

3 RXD+ (Receive Data)

4 Not used / power (+)

5 Not used / power (+)

6 RXD- (Receive Data)

7 Not used / power (-)

8 Not used / power (-)

Pin 1 Pin 10

0000020