| 摘要 |
A clock diagnostics module, such as a state machine, integrated into an integrated clock controller monitors clock signals associated with the integrated clock controller and reports the status of the clock signals through a management bus, such as an SMBus. For instance, a counter integrated into the integrated clock controller counts clock signal cycles that occur in a management bus cycle and compares the clock signal with an expected value to determine the accuracy of the clock. A power on reset allows the management bus to read the clock diagnostics module in the event of clock controller failure.
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