RabbitCore RCM3900 User’s Manual
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6. USING THE TCP/IP FEATURES
6.1 TCP/IP Connections
Programming and development can be done with the RCM3900 modules without connect-
ing the Ethernet port to a network. However, if you will be running the sample programs
that use the Ethernet capability or will be doing Ethernet-enabled development, you should
connect the RCM3900 module’s Ethernet port at this time.
Before proceeding you will need to have the following items.
If you don’t have Ethernet access, you will need at least a 10Base-T Ethernet card
(available from your favorite computer supplier) installed in a PC.
One Cat. 5 straight through or crossover Ethernet cable.
A Cat. 5 straight-through and a Cat. 5 crossover Ethernet cable are included in the
RCM3900 Development Kit.
Figure 11 shows how to identify the two cables based on the
wires in the transparent RJ-45 connectors.
Figure 11. How to Identify Straight-Through and Crossover Ethernet Cables
Ethernet cables and a 10Base-T Ethernet hub are available in a TCP/IP tool kit. More
Crossover
Cable
Straight-
Through
Cable
Same
color order
in connectors
Different
color order
in connectors