System interconnect and system on chip having the same

A system on chip (SoC) includes a bus matrix configured to connect a plurality of functional blocks. A monitoring unit is configured to monitor whether a transaction between the functional blocks has a hang or stall and distinguish a functional block that caused a hang or stall from among the functional blocks. A recovery signal generation unit is configured to provide a recovery signal for releasing the hang or stall to at least one of the functional blocks based on the distinguishing by the monitoring unit.