Stratix IV GX Pin Assignment

It's strange because I just found a documentation which says that it's actually possible to instanciate RGMII with the Stratix IV GX.

http://www.altera.com/literature/manual/rm_siv_gx_si_devkit_board.pdf?gsa_pos=1&wt.oss_r=1&wt.oss=stratix%20iv%20gx%20mdio

Still it says that the PIN for the RXP is D31 instead of this document:

http://apegate.roma1.infn.it/~ammendola/altera/s4gx_pcie_b.pdf

In which we can see that the RXP pin is the AC31.

Which of these document should I use in order to link my rxp, txp, mdio, mdc finally?