Xilinx iddr. As of now I have not added MMCM for adc clock .

Xilinx iddr. If you are using Vivado, then you should also be using UG953 instead of UG768. DDR primitives has a simple configuration. zhihu. If it is a DDR signal, then CB <= not (C); should work (In your case "CB <= not ddr_input_clock" ). I want to know the correct method for applying input constraint. 2 I am interfacing ADC (AD9467) with Artix 7 FPGA. The IDDR is available with modes that present the data to the FPGA fabric at the time and clock edge they are captured, or on the same clock edge. Here are some more clarifications. the IDDR outputs (Q1 and Q2) should be used by logic that is clocked by a BUFR. What's in your clock wizard? If you are capturing the data on the BUFIO clock in the IDDR, you should really be working with it using a BUFR clock - i. c4l 3trffzn jdscl xkf1q tbxxk 8vzrpc t1 djlmq4o ci6ep exo