Cirrus Logic Inc.

Gavin Alexander Waite

Willem Zwart

Alastair Mark Boomer

Erich Paul Zwyssig

Communication circuitry, comprising: N communication nodes being clock-candidate nodes, where N&#x2265;2; N communication units for communication using respective communication protocols, and connected or connectable to receive respective clock signals for communication under their respective communication protocols via respective said clock-candidate nodes; and a control unit configured, in a decision operation, to monitor the clock-candidate nodes and decide which of the communication protocols is in use dependent on at which of the clock-candidate nodes a received clock signal is detected, wherein at least one said communication unit is connected or connectable to receive and/or transmit data under its respective communication protocol via at least one said clock-candidate node other than the clock-candidate node via which that communication unit is to receive its respective clock signal.

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Edinburgh, United Kingdom

Gavin Alexander Waite