| 摘要 |
An integrated circuit of the kind which transmits a clock-signal off-chip to a load ( 7 ) is provided with a load measurement circuit ( 4 ), which measures a load value indicative of the power being drawn from the IC by the clock output ( 5 ), and a comparison circuit ( 13 ), which compares the load value to a "high" load value ( 21 ) and a "low" load value ( 17 ). The integrated circuit stops transmitting the clock signal off-chip if the measured load value is above the "high" load value ( 21 ), indicating that the power drawn may be beyond the operational limits of the integrated circuit. Also, the integrated circuit stops transmitting the clock signal off-chip if the measured load value is below the "low" load value ( 17 ), indicating that the clock signal is unused.
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