In the UG-992, following is it.166 page,TRANSMITTER SIGNAL PATH"Overranging is detected in the Tx digital signal path at each stage and is limited to the maximum code value to prevent data wrapping."
Is this function only to limite to the maximum code value, not to change the Tx gain or ATT automatically ?
This function is to limit the maximum code value only. This is not part of the Transmit power control.
For more details please refer to UG-992, section Tx Power Control, page 108.