The allows a core to communicate with other cpu components, such as the memory controller and other cores

The appropriate response is Bus Interface Unit or BIU. The BIU gives different capacities, including era of the memory and I/O addresses for the exchange of information between outside the CPU, and the EU. 
The EU gets program direction codes and information from the BIU, executes these guidelines, and store the outcomes in the general registers. By passing the information back to the BIU, information can likewise be put away in a memory area or kept in touch with a yield gadget. Note that the EU has no association with the framework transports. It gets and yields every one of its information through the BIU.