FPGA原语之IDDR/ODDRIDDR/ODDR
IDDR/ODDR1. IDDRIDDR的VHDL例化如下。IDDR_inst : IDDR generic map ( DDR_CLK_EDGE => "OPPOSITE_EDGE", -- "OPPOSITE_EDGE", "SAME_EDGE" -- or "SAME_EDGE_PIP...
