| 摘要 |
A data processing system comprises a plurality of sub-circuits (10a, 10a, 10c), a clock generator (20) provided with a control circuit (22), a pool of oscillator circuits (24a, . . . 24f) comprising at least three oscillator circuits, and a multiplexing circuit (26) coupled between the pool and clock inputs of the sub-circuits. The multiplexing circuit has a control input (27) coupled to a control output (23) of the control circuit. The multiplexing circuit is configured to couple any selectable one of the oscillator circuits in the pool to a clock input (11a, 11b, 11c) of each of the sub-circuits. The control circuit (22) is configured to set the frequencies of respective ones of the clock circuit by controlling the multiplexing circuit to supply clock signals derived from selected ones of the oscillator circuits to the sub-circuits.
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