Xilinx Virtex-6 Libraries Guide for HDL Designs

Chapter 4: About Design ElementsMUXF8Primitive: 2-to-1 Look-Up Table Multiplexer with General OutputIntroductionThis design element provides a multiplexer function in eight slices for creating a function-of-8 look-up table or a16-to-1 multiplexer in combination with the associated look-up tables, MUXF5s, MUXF6s, and MUXF7s. Localoutputs (LO) of MUXF7 are connected to the I0 and I1 inputs of the MUXF8. The S input is driven from anyinternal net. When Low, S selects I0. When High, S selects I1.Logic TableInputsOutputsS I0 I1 O0 I0 X I01 X I1 I1X 0 0 0X 1 1 1Port DescriptionsPort Direction Width FunctionO Output 1 Output of MUX to general routingI0 Input 1 Input (tie to MUXF7 LO out)I1 Input 1 Input (tie to MUXF7 LO out)S Input 1 Input select to MUXDesign Entry MethodInstantiationInferenceCORE Generator and wizardsMacro supportYesRecommendedNoNoVirtex-6 Libraries Guide for HDL DesignsUG623 (v 11.4) December 2, 2009 www.xilinx.com 235