Xilinx UG472, 7 Series Clocking Resources User Guide Updated document; see revision history.
Xilinx UG479 7 Series DSP48E1 Slice, User Guide Updated document; see revision history.
Xilinx UG769 LogiCORE IP 7 Series FPGAs Transceivers Wizard v2.5, User Guide Updated in Vivado Design Suite 2013.1 and ISE Design Suite 14.5.
Design Advisory Master Answer Record for Artix-7 FPGA Design Advisory
(Xilinx Answer 55009): "Design Advisory for 7 Series FPGA GTX/GTH/GTP Transceivers - TX Sync Controller Change for Phase Alignment in Buffer Bypass Mode"