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Circuit device, oscillator, electronic apparatus, and vehicle

A technology of circuit device and oscillator, which is applied in the fields of circuit device, oscillator, electronic equipment and moving body, can solve the problems such as the decrease of the precision of clock signal and oscillating signal, etc.

Active Publication Date: 2017-08-11
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, it has been found that when such a digital interface unit is provided, the accuracy of the clock signal and the oscillation signal may decrease due to phase noise caused by communication noise in the digital interface unit.

Method used

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  • Circuit device, oscillator, electronic apparatus, and vehicle
  • Circuit device, oscillator, electronic apparatus, and vehicle
  • Circuit device, oscillator, electronic apparatus, and vehicle

Examples

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Embodiment Construction

[0076] Preferred embodiments of the present invention will be described in detail below. In addition, the present embodiment described below does not unduly limit the content of the present invention described in the claims, and not all configurations described in the present embodiment are necessarily solutions of the present invention.

[0077] 1. The structure of the circuit device

[0078] figure 1 The basic circuit configuration of the circuit device of this embodiment is shown. Such as figure 1 As shown, the circuit device of this embodiment includes: a digital I / F unit 30 , a processing unit 50 , an oscillation signal generation circuit 140 , a clock signal generation circuit 160 , and first, second, and third terminal groups TG1 , TG2 , and TG3 . In addition, a register unit 32 can be included. In addition, the circuit device of this embodiment is not limited to figure 1 Various modifications such as omitting some of its constituent elements (for example, a clock ...

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PUM

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Abstract

The invention discloses a circuit device, an oscillator, an electronic apparatus, and a vehicle. The circuit device includes a digital interface, a processor, an oscillation signal generation circuit, a clock signal generation circuit that generates a clock signal having frequency obtained through multiplication of a frequency of the oscillation signal, and terminal groups of the digital interface and the clock signal generation circuit. The terminal group of the digital interface is disposed in a first region along a first side of the circuit device, and the terminal group of the clock signal generation circuit is disposed in any one of second, third and fourth regions of the circuit device.

Description

technical field [0001] The present invention relates to a circuit device, an oscillator, electronic equipment, a mobile body, and the like. Background technique [0002] Conventionally, oscillators such as an OCXO (oven controlled crystal oscillator) and a TCXO (temperature compensated crystal oscillator) have been known. For example, OCXOs are used as reference signal sources in base stations, network routers, measurement equipment, and the like. In oscillators such as such OCXOs and TCXOs, there is a demand for high precision of the oscillation frequency. [0003] As a prior art of such an oscillator, there is, for example, the technology disclosed in JP-A-2015-82815. In this prior art, aging correction of the oscillation frequency is performed in order to increase the accuracy of the oscillation frequency. Specifically, a storage unit for storing correspondence relation information between a correction value of the oscillation frequency control voltage and an elapsed t...

Claims

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Application Information

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IPC IPC(8): H03B5/04H03B5/36
CPCH03B5/04H03B5/36
Inventor 米泽岳美
Owner SEIKO EPSON CORP