TITLE ONE
CHAPTER I
Fundamental rights
Article 20
A. General principles:
VII. Criminal proceeding can be terminated in advance, provided that the defendant agrees and according to the law. If the defendant, voluntarily and aware of the consequences, acknowledges his guilt and there is enough evidence to corroborate the charges, the judge shall call to a sentence hearing. The law shall establish the benefits granted to the defendant in case he accepts his guilt.
National proceedings on admission of guilt
EDIT.