1. Circuitry, comprising: first and second communications interfaces, wherein communications requirements of the second communications interface vary based on changes to a communication protocol of the second communications interface from a first protocol to a second protocol; interface circuitry coupled between the first and second interfaces, wherein the interface circuitry has a first mode for processing communications of the first protocol and a second mode for processing communications of the second protocol; and control circuitry that controls the interface circuitry to switch between the first and second modes based on the variable communications requirements of the second interface without interrupting communications at the first interface while the first communications interface processes communications.