At the end of the document from the ** International Theological Commission** From the Diakonia of Christ to the Diakonia of the Apostles* it is stated:
"With regard to the ordination of women to the diaconate, it should be noted that two important indications emerge from what has been said up to this point:
- The deaconesses mentioned in the tradition of the ancient Church - as evidenced by the rite of institution and the functions they exercised - were not purely and simply equivalent to the deacons;
- The unity of the sacrament of Holy Orders, in the clear distinction between the ministries of the bishop and the priests on the one hand and the diaconal ministry on the other, is strongly underlined by ecclesial tradition, especially in the teaching of the Magisterium.
In the light of these elements which have been set out in the present historico-theological research document, it pertains to the ministry of discernment which the Lord established in his Church to pronounce authoritatively on this question."
vatican.va/roman_curia/congregations/cfaith/cti_documents/rc_con_cfaith_pro_05072004_diaconate_en.html
(not a document of the Magisterium of course but they do very fine Theological work --headed by then Cardinal Ratzinger…)