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Why does the Dialer I/O still work when in the Idle Mode?

April 26, 2017Dialer idle mode

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Why does the Dialer I/O still work when in the Idle Mode?

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• When the phone MCU is in the Idle Mode, the 32768Hz oscillator will stop. In such cases the state change of the Dialer I/O will be different from the normal operations. The diagram below is the state machine of the Dialer I/O when in the Idle Mode. • Note that some of the output combinations are against normal telephone operations. The Dialer I/O has to be treated carefully when in the Idle Mode.