To set the SMID value for a fabric master, you connect its AXI master interface to the S_AXI interface of an AXI Sideband Formatter Utility IP core. Then connect the M_AXI interface of the IP to the fabric interconnect so that transactions can reach the PS block. You configure the IP to perform SMID insertion, specifying the field width and constant SMID value.
For each AW or AR transfer, the value of SMID is inserted into the low-order
position of awuser and aruser; any in-bound value is left-shifted.