Connecting to Download code in WindRiver

[Alan Anderson]

Originally Posted by Caleigh C

What is a crossover cable?

An Ethernet jack for twisted pair wiring (pretty much the only kind of Ethernet jack you'll ever see) has specific pins defined for data out and for data in. In order to connect two normal jacks together, you have to use a cable that swaps the wires so that data out of one jack goes to data in of the other. That's a crossover cable.

Ethernet hubs and switches have "crossover" jacks, so to connect to them you use a straight-through or "patch" cable. That's the normal kind of Ethernet cable, since it's rare to connect only two devices together without a hub.

For years, most modern computers' Ethernet adapters have had the ability to automatically sense what they're connected to and swap their connections appropriately, so crossover cables are not often required. One place they are required is between the cRIO and the Axis 206 camera, because neither of those two devices will do internal crossover automatically.