FILTER_SEL is mapped to the filter select field of the s_axis_config_tdata bus
Drive s_axis_config_tvalid with the same signal driving s_axis_data_tvalid .
Note: For decimation filters s_axis_config_tvalid must be driven at the output rate. Configuration packets are consumed at the lower output rate and if supplied at the input rate the Configuration Channel FIFO becomes full and s_axis_config_tready is deasserted and input packets ignored.
Tie s_axis_config_tlast to 0 and ignore event_s_axis_config_*