The customizable LogiCORE™ IP Integrated Bit Error Ratio Tester (IBERT) core for UltraScale architecture GTH transceivers is designed for evaluating and monitoring the GTH transceivers. This core includes pattern generators and checkers that are implemented in FPGA logic, and access to ports and the dynamic reconfiguration port attributes of the GTH transceivers. Communication logic is also included to allow the design to be run time accessible through JTAG. This core can be used as a self-contained or open design, based on customer configuration.