design_guide_30R The Xilinx logo shown above is a registered trademark of Xilinx, Inc. The shadow X shown above is a trademark of Xilinx, Inc. FPGA Architect, FPGA Foundry, NeoCAD, NeoCAD EPIC, NeoCAD PRISM, NeoROUTE, Timing Wizard, TRACE, XACT, XILINX, XC2064, XC3090, XC4005, XC5210, and XC-DS501 are registered trademarks of Xilinx, Inc. All XC-prex product designations, A.K.A. Speed, Alliance Series, AllianceCORE, BITA, CLC, Congurable Logic Cell, CORE Generator, CoreGenerator, CoreLINX, Dual Block, EZTag, FastCLK, FastCONNECT, FastFLASH, FastMap, Foundation, HardWire, LCA, LogiBLOX, Logic Cell, LogiCORE, LogicProfessor, MicroVia, PLUSASM, PowerGuide, PowerMaze, QPro, RealPCI, RealPCI 64/66, SelectI/O, SelectRAM, Select-RAM+, Smartguide, Smart-IP, SmartSearch, Smartspec, SMARTSwitch, Spartan, TrueMa……