Virtex-6 FPGA GTX收发 User Guide:This document shows how to use the GTX transceivers in Virtex®-6 FPGAs. In thisdocument:• Virtex-6 FPGA GTX transceiver is abbreviated as GTX transceiver.• GTXE1 is the name of the instantiation primitive that instantiates one Virtex-6 FPGAGTX transceiver.• A Quad or Q is a cluster or set of four GTX transceivers that share two differentialreference clock pin pairs and analog supply pins.