thanks Hayleia, i already known that hackspire site, but it was a bit confusing because they say that the dock connector is J01, but on my device the dock connector is named J05. I will check that topic on TI planet and try to understand more about all that stuff.
As a side note, i have tried to supply an external led through the mini usb port (i actually used a mini usb adapter to have more space between pins) but an strange error message apears and cut's off the power supply of the mini usb port until i connect another device to it.
The message is as follows: "Disconnect and reconnect the USB peripheral attached to handheld; if problem persists make sure the battery in your Cradle and/or Handheld fully carged or on AC power. If this does not correct the situation the USB peripheral is likely faulty"