Clock generator and mobile device using the same

A technology for clock generators and mobile devices, applied in the direction of generating/distributing signals, power oscillators, power automatic control, etc., can solve the problems of increased printed circuit board area, high hardware cost and high cost of crystal oscillators, and achieve reduction Production cost and circuit area, effect of increasing production cost and circuit area
CN103199859AInactive Publication Date: 2013-07-10MEDIATEK INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MEDIATEK INC
Publication Date
2013-07-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a clock generator for a mobile device, capable of operating in one of a full-power mode and a low-power mode according to a standby signal to generate a high-frequency clock signal and a low-frequency clock signal is disclosed. The clock generator includes a crystal oscillator, for generating an oscillation signal of a specific frequency according to the power mode of the clock generator; a frequency division block, for dividing the oscillation signal by a specific divisor according to the power mode of the clock generator to generate the low-frequency clock signal; and a buffer block, for amplifying the oscillation signal to generate the high-frequency clock signal; wherein during each power mode, a frequency of the low-frequency clock signal is substantially the same. The invention also provides a mobile device using the clock generator.
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Description

technical field

[0001] The present invention relates to a clock generator and a mobile communication device using it, in particular to a single oscillator crystal clock generator operable in different power modes to generate clock signals of different frequencies, and a mobile communication device using the clock generator equipment. Background technique

[0002] With the continuous development of electronic technology, mobile communication devices may have more than one wireless communication service, such as GSM / GPRS / EGPRS (GGE), Bluetooth, Wi-Fi, WiMAX wireless communication service, LTE wireless communication service and so on. A modern mobile electronic device may include many wireless communication modules to respectively provide communication services corresponding to different communication standards. In addition, since the cost of a precise oscillator (eg, a crystal oscillator) is high, in order to reduce production costs, all wireless communication modules in a mo...

Claims

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