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Signal processing device and method for providing oscillating signal in the signal processing device

A signal processing device and oscillating signal technology, applied in the direction of automatic control of power, electrical components, frequency control of electrical characteristics, etc., to achieve the effect of reducing BOM cost

Active Publication Date: 2012-10-24
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when considering the bill of materials (BOM) cost of a mobile system, the price of the crystal oscillator will become an issue that must be paid attention to

Method used

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  • Signal processing device and method for providing oscillating signal in the signal processing device
  • Signal processing device and method for providing oscillating signal in the signal processing device

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Embodiment Construction

[0009] Certain terms are used in the description and claims to refer to particular elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that the first device is coupled to the second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0010] Please refer to figure 1 , figure 1 is a schematic b...

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Abstract

A signal processing device includes a signal processing chip and a conducting path. The signal processing chip includes: a first port capable of receiving a first oscillating signal,a second port capable of outputting a second oscillating signal derived from the first oscillating signal,and a third port. The conducting path is external to the signal processing chip and coupled to the second port and the third port, and the conducting path is capable of transmitting the second oscillating signal outputted from the second port to the third port. The signal processing device can be used to reduce the material inventory of the mobile system.

Description

technical field [0001] The present invention relates to a signal processing device, and more particularly, to a signal processing device and a method for providing an oscillating signal. Background technique [0002] In mobile systems, baseband chips can be used to perform various baseband encoding / decoding operations, such as audio / video signal processing. In such a mobile system, it is necessary to provide an accurate clock signal to the baseband chip to generate a reference clock signal for multiple functional circuit modules in the baseband chip. More specifically, the analog real-time clock (Real-time-clock, RTC) module can receive a precise clock signal, and generate a reference clock signal for multiple functional circuit modules in the baseband chip. Usually, an accurate clock signal is generated by a crystal oscillator outside the baseband chip, and the analog RTC module as a crystal oscillator has relatively stable electrical characteristics. However, when consid...

Claims

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Application Information

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IPC IPC(8): H03L7/06
CPCH03L7/06H03J7/04
Inventor 李浩荣王栋谊
Owner MEDIATEK INC