rst, monitor_axis_tkeep, monitor_axis_tvalid, monitor_axis_tready, monitor_axis_tlast, frame_len, frame_len_valid
1,0,0,0,0,    0,0
0,0,1,0,0,    0,0
0,1,1,1,0,    0,0
0,1,1,1,1,    1,0
0,1,1,1,1,    2,1
0,0,0,1,0,    1,1