The interconnect has following sub-modules.
•Xilinx memory protection unit (XMPU): FPD, OCM, and DDR.
•Xilinx peripheral protection unit (XPPU).
•System memory management unit (SMMU).
•AXI timeout block (ATB) that works as a watchdog timer for interconnect hang.
•AXI and APB isolation block (AIB) units that are responsible for functionally isolating the AXI/APB master from the slave in preparation for powering down an AXI/APB master or slave.
•PS-PL AXI interfaces.
•AXI performance monitor.