An integrated circuit comprising: dedicated circuitry (22, 142); dynamically reconfigurable circuitry (28, 144) operable in different configurations; a bridge circuit for handling communications between the dedicated circuitry and the dynamically reconfigurable circuitry, the bridge circuit comprising: first and second communications interfaces (IF1, IF2), wherein the first interface is adapted to receive transactions from the dedicated circuitry (22, 142) and the dynamically reconfigurable circuitry (28, 144) is coupled to the second interface; interface circuitry coupled between the first and second interfaces (IF1, IF2); and characterized by the bridge circuit further comprising control circuitry adapted to adjust communications settings of the second interface of the interface circuitry based on different communications requirements of the second interface that are dependent on which configuration of the dynamically reconfigurable circuitry (28, 144) is currently implemented; wherein the interface circuitry comprises a buffer adapted to store the received transactions in response to detecting a reconfiguration request for the dynamically reconfigurable circuitry (28, 144); and wherein the interface circuitry is adapted to provide, after completion of reconfiguration operations for the dynamically reconfigurable circuitry (28, 144), the buffered transactions to the dynamically reconfigurable circuitry, thereby providing a seamless transition for the dedicated circuitry (22, 142). dedicated circuitry (22, 142); dynamically reconfigurable circuitry (28, 144) operable in different configurations; a bridge circuit for handling communications between the dedicated circuitry and the dynamically reconfigurable circuitry, the bridge circuit comprising: first and second communications interfaces (IF1, IF2), wherein the first interface is adapted to receive transactions from the dedicated circuitry (22, 142) and the dynamically reconfigurable circuitry (28, 144) is coupled to the second interface; interface circuitry coupled between the first and second interfaces (IF1, IF2); and first and second communications interfaces (IF1, IF2), wherein the first interface is adapted to receive transactions from the dedicated circuitry (22, 142) and the dynamically reconfigurable circuitry (28, 144) is coupled to the second interface; interface circuitry coupled between the first and second interfaces (IF1, IF2); and characterized by the bridge circuit further comprising control circuitry adapted to adjust communications settings of the second interface of the interface circuitry based on different communications requirements of the second interface that are dependent on which configuration of the dynamically reconfigurable circuitry (28, 144) is currently implemented; wherein the interface circuitry comprises a buffer adapted to store the received transactions in response to detecting a reconfiguration request for the dynamically reconfigurable circuitry (28, 144); and wherein the interface circuitry is adapted to provide, after completion of reconfiguration operations for the dynamically reconfigurable circuitry (28, 144), the buffered transactions to the dynamically reconfigurable circuitry, thereby providing a seamless transition for the dedicated circuitry (22, 142).