Icsp pins in arduino nano

Is it possible to use the icsp pins in the arduino nano, to power the arduino with a 5v power source from a circuit I am making?
If not, can someone please tell me how to power the arduino nando with an external 5v power source?
If it can be done, can someone please give me the schematics of the icsp pins of the nano, or are they the same as any other icsp pins?
Thanks.

ICSP connector can be used to power the Arduino. Just use regulated 5V otherwise ATmega can be damaged. ICSP on Nano must be the same as other ICSP otherwise will be useless.:) Look: https://www.arduino.cc/en/uploads/Main/ArduinoNano30Schematic.pdf . Does it helps?