This module is used to generate user traffic to each of the AXI4-Stream data, UFC, NFC and USER-K interfaces. The module contains pseudo-random data generated using a linear feedback shift register (LFSR) with a known seed value. The FRAME_CHECK module can use the same configuration to check the data integrity of the aurora channel. The inputs for this module are user_clk , reset and channel_up . The FRAME_GEN module follows the AXI4-Stream protocol and transmits the user traffic.