This module is a hierarchical top including the ISERDES, OSERDES, and IDELAY modules. See LVDS Transceiver for 7 Series and Zynq 7000 Devices for a detailed block diagram for LVDS transceiver.
<project_dir>/<project_name>/<project_name>.srcs/sources1/ip/<component_name>/synth/lvds_transceiver/<component_name>_sgmii_phy_iob.v[hd]