Integrated circuit device with crossbar to route traffic

A system comprising:

• at least one memory device;
• and
• a microcontroller coupled to the at least one memory device via a plurality of channels, the microcontroller comprising:
• a plurality of masters coupled to the plurality of channels;
• a crossbar unit configured to communicate with the at least one memory device via the plurality of channels, wherein the crossbar unit is coupled to the plurality of masters, and wherein the crossbar unit is configured to monitor bandwidth usage at the plurality of channels and route traffic between the plurality of masters and the plurality of channels based on the monitored bandwidth usage;
• and
• a crossbar routing element configured to route traffic based on an operating mode of the crossbar unit.

A method comprising:

• sending read requests from a plurality of masters to an external memory device via a plurality of channels coupling the external memory device to a crossbar unit;
• monitoring, using the crossbar unit, usage of the plurality of channels;
• and
• selectively routing, using a crossbar routing element, read requests from at least some of the plurality of masters to the plurality of channels based on the monitored usage of the plurality of channels, the routing being performed based, at least in part, on an operating mode of the crossbar unit.