Ethernet with DSP Dev. Kit Cyclone III (no NIOS)

On the Board (near the ethernet connector) there are two Pins and next to them is a label: ENET_HSDAC.

One pin is P, the other is N. I wonder whether it's something like a jumper that I have to set in order to use the Ethernet.

But maybe P means plus and M means minus, then I have a short circuit.

In the data sheet these pins are not mentioned.

But the PHY Chip has normal temperature (~35°C), so it seems that the PHY is working. All the LED (10,100,1000,duplex,tx,rx) are off.

Do you think that the board could be damaged or something? I am working since two days on it and I still don't even get a physical connection...