Patent Description:
As one technique for reducing the electromagnetic interference (EMI) phenomenon in an electronic device, there is spread spectrum clock generation (SSCG) technology, which reduces peak power by varying an operating frequency over time. In this technology, the profile of frequency varying over time is an important factor in determining the amount of peak power reduction.

<CIT> discloses an electronic apparatus with a wireless unit includes a multiplier to receive a clock signal at a predetermined frequency. The electronic apparatus further includes a modulator configured to modulate the frequency of the clock signal generated by the multiplier, and a controller configured to change the frequency of the clock signal generated by the multiplier and a modulation rate of the modulation performed by the modulator according to a state of the electronic apparatus.

<CIT>discloses a method for adjusting the frequency of one or more clock signals used by a device. The one or more clock signals are adjusted by a determined amount when a channel quality metric of an RF channel in use by the device indicates a degradation in the reception quality.

According to various embodiments, an electronic device that controls a spread spectrum clock generator to output a clock signal that reduces EMI without deteriorating connected communication performance by changing a spread spectrum setting may be provided.

According to various embodiments, degradation of connected communication performance may be prevented by controlling a spread spectrum clock generator (SSCG).

In addition, according to various embodiments, electromagnetic interference (EMI) may be reduced by controlling an SSCG.

In addition, various effects directly or indirectly ascertained through the present disclosure may be provided.

When describing the embodiments with reference to the accompanying drawings, like reference numerals refer to like elements and a repeated description related thereto will be omitted.

<FIG> is a block diagram illustrating an electronic device in a network environment according to various embodiments.

Referring to <FIG>, the electronic device <NUM> in the network environment <NUM> may communicate with an electronic device <NUM> via a first network <NUM> (e.g., a short-range wireless communication network), or communicate with at least one of an electronic device <NUM> or a server <NUM> via a second network <NUM> (e.g., a long-range wireless communication network). According to an embodiment, the electronic device <NUM> may include a processor <NUM>, a memory <NUM>, an input module <NUM>, a sound output module <NUM>, a display module <NUM>, an audio module <NUM>, a sensor module <NUM>, an interface <NUM>, a connecting terminal <NUM>, a haptic module <NUM>, a camera module <NUM>, a power management module <NUM>, a battery <NUM>, a communication module <NUM>, a subscriber identification module (SIM) <NUM>, or an antenna module <NUM>. In some embodiments, at least one (e.g., the connecting terminal <NUM>) of the above components may be omitted from the electronic device <NUM>, or one or more other components may be added in the electronic device <NUM>. In some embodiments, some (e.g., the sensor module <NUM>, the camera module <NUM>, or the antenna module <NUM>) of the components may be integrated as a single component (e.g., the display module <NUM>).

The processor <NUM> may execute, for example, software (e.g., a program <NUM>) to control at least one other component (e.g., a hardware or software component) of the electronic device <NUM> connected to the processor <NUM>, and may perform various data processing or computation. According to an embodiment, as at least a part of data processing or computation, the processor <NUM> may store a command or data received from another component (e.g., the sensor module <NUM> or the communication module <NUM>) in a volatile memory <NUM>, process the command or the data stored in the volatile memory <NUM>, and store resulting data in a non-volatile memory <NUM>. According to an embodiment, the processor <NUM> may include a main processor <NUM> (e.g., a central processing unit (CPU) or an application processor (AP)) or an auxiliary processor <NUM> (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently from, or in conjunction with the main processor <NUM>. For example, when the electronic device <NUM> includes the main processor <NUM> and the auxiliary processor <NUM>, the auxiliary processor <NUM> may be adapted to consume less power than the main processor <NUM> or to be specific to a specified function.

The auxiliary processor <NUM> may control at least some of functions or states related to at least one (e.g., the display module <NUM>, the sensor module <NUM>, or the communication module <NUM>) of the components of the electronic device <NUM>, instead of the main processor <NUM> while the main processor <NUM> is in an inactive (e.g., sleep) state, or together with the main processor <NUM> while the main processor <NUM> is in an active state (e.g., executing an application). According to an embodiment, the auxiliary processor <NUM> (e.g., an ISP or a CP) may be implemented as part of another component (e.g., the camera module <NUM> or the communication module <NUM>) functionally related to the auxiliary processor <NUM>. According to an embodiment, the auxiliary processor <NUM> (e.g., an NPU) may include a hardware structure specified for artificial intelligence model processing. An artificial intelligence model may be generated through machine learning. Such learning may be performed, for example, by the electronic device <NUM> in which an artificial intelligence model is executed, or via a separate server (e.g., the server <NUM>). Learning algorithms may include, but are not limited to, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. An artificial neural network may include, for example, a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more thereof, but is not limited thereto. The artificial intelligence model may additionally or alternatively include a software structure other than the hardware structure.

The memory <NUM> may store various pieces of data used by at least one component (e.g., the processor <NUM> or the sensor module <NUM>) of the electronic device <NUM>. The various pieces of data may include, for example, software (e.g., the program <NUM>) and input data or output data for a command related thereto.

The program <NUM> may be stored as software in the memory <NUM> and may include, for example, an operating system (OS) <NUM>, middleware <NUM>, or an application <NUM>.

The sound output module <NUM> may output a sound signal to the outside of the electronic device <NUM>. The receiver may be used to receive an incoming call.

According to an embodiment, the display module <NUM> may include a touch sensor adapted to sense a touch, or a pressure sensor adapted to measure the intensity of force incurred by the touch.

According to an embodiment, the audio module <NUM> may obtain the sound via the input module <NUM> or output the sound via the sound output module <NUM> or an external electronic device (e.g., the electronic device <NUM> such as a speaker or headphones) directly or wirelessly connected to the electronic device <NUM>.

The sensor module <NUM> may detect an operational state (e.g., power or temperature) of the electronic device <NUM> or an environmental state (e.g., a state of a user) external to the electronic device <NUM>, and generate an electrical signal or data value corresponding to the detected state.

The interface <NUM> may support one or more specified protocols to be used for the electronic device <NUM> to be coupled with the external electronic device (e.g., the electronic device <NUM>) directly (e.g., by wire) or wirelessly. According to an embodiment, the interface <NUM> may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

The connecting terminal <NUM> may include a connector via which the electronic device <NUM> may be physically connected to the external electronic device (e.g., the electronic device <NUM>).

The haptic module <NUM> may convert an electrical signal into a mechanical stimulus (e.g., a vibration or a movement) or an electrical stimulus which may be recognized by a user via his or her tactile sensation or kinesthetic sensation.

The camera module <NUM> may capture a still image and moving images. According to an embodiment, the camera module <NUM> may include one or more lenses, image sensors, ISPs, or flashes.

The communication module <NUM> may include one or more CPs that are operable independently of the processor <NUM> (e.g., an AP) and that support a direct (e.g., wired) communication or a wireless communication. According to an embodiment, the communication module <NUM> may include a wireless communication module <NUM> (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module <NUM> (e.g., a local area network (LAN) communication module, or a power line communication (PLC) module). A corresponding one of these communication modules may communicate with the external electronic device <NUM> via the first network <NUM> (e.g., a short-range communication network, such as BluetoothTM, wireless-fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or the second network <NUM> (e.g., a long-range communication network, such as a legacy cellular network, a <NUM> network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multiple components (e.g., multiple chips) separate from each other. The wireless communication module <NUM> may identify and authenticate the electronic device <NUM> in a communication network, such as the first network <NUM> or the second network <NUM>, using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the SIM <NUM>.

The wireless communication module <NUM> may support a <NUM> network after a <NUM> network, and next-generation communication technology, e.g., new radio (NR) access technology. The wireless communication module <NUM> may support a high-frequency band (e.g., a mmWave band) to achieve, e.g., a high data transmission rate. The wireless communication module <NUM> may support various technologies for securing performance on a high-frequency band, such as, e.g., beamforming, massive multiple-input and multiple-output (massive MIMO), full dimensional MIMO (FD-MIMO), an array antenna, analog beamforming, or a large scale antenna. According to an embodiment, the wireless communication module <NUM> may support a peak data rate (e.g., <NUM> Gbps or more) for implementing eMBB, loss coverage (e.g., <NUM> dB or less) for implementing mMTC, or U-plane latency (e.g., <NUM> or less for each of downlink (DL) and uplink (UL), or a round trip of <NUM> or less) for implementing URLLC.

The antenna module <NUM> may transmit or receive a signal or power to or from the outside (e.g., an external electronic device) of the electronic device <NUM>. According to an embodiment, the antenna module <NUM> may include an antenna including a radiating element including a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). In such a case, at least one antenna appropriate for a communication scheme used in a communication network, such as the first network <NUM> or the second network <NUM>, may be selected by, for example, the communication module <NUM> from the plurality of antennas. The signal or power may be transmitted or received between the communication module <NUM> and the external electronic device via the at least one selected antenna.

According to an embodiment, the antenna module <NUM> may form a mm Wave antenna module. According to an embodiment, the mmWave antenna module may include a PCB, an RFIC disposed on a first surface (e.g., the bottom surface) of the PCB or adjacent to the first surface and capable of supporting a designated high-frequency band (e.g., the mmWave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., the top or a side surface) of the PCB, or adjacent to the second surface and capable of transmitting or receiving signals in the designated high-frequency band.

Each of the external electronic devices <NUM> and <NUM> may be a device of the same type as or a different type from the electronic device <NUM>. According to an embodiment, all or some of operations to be executed at the electronic device <NUM> may be executed at one or more of external electronic devices (e.g., the external electronic devices <NUM> and <NUM>, or the server <NUM>). For example, if the electronic device <NUM> needs to perform a function or a service automatically, or in response to a request from a user or another device, the electronic device <NUM>, instead of, or in addition to, executing the function or the service, may request the one or more external electronic devices to perform at least part of the function or the service. The electronic device <NUM> may provide ultra low-latency services using, e.g., distributed computing or MEC. In an embodiment, the external electronic device <NUM> may include an Internet-of-things (IoT) device. The electronic device <NUM> may be applied to intelligent services (e.g., a smart home, a smart city, a smart car, or healthcare) based on <NUM> communication technology or IoT-related technology.

The electronic device according to the embodiments disclosed herein may be one of various types of electronic devices. According to an embodiment of the disclosure, the electronic device is not limited to those described above. As used herein, each of such phrases as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C", may include any one of, or all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as "<NUM>st" and "<NUM>nd," or "first" and "second" may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if a component (e.g., a first component) is referred to, with or without the term "operatively" or "communicatively", as "coupled with", "coupled to", "connected with", or "connected to" another component (e.g., a second component), it means that the component may be coupled with the other component directly (e.g., by wire), wirelessly, or via a third component.

As used in connection with embodiments of the disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may interchangeably be used with other terms, for example, "logic", "logic block", "part", or "circuitry".

Embodiments as set forth herein may be implemented as software (e.g., the program <NUM>) including one or more instructions that are stored in a storage medium (e.g., an internal memory <NUM> or an external memory <NUM>) that is readable by a machine (e.g., the electronic device <NUM>). For example, a processor (e.g., the processor <NUM>) of the machine (e.g., the electronic device <NUM>) may invoke at least one of the one or more instructions stored in the storage medium, and execute it. The one or more instructions may include code generated by a compiler or code executable by an interpreter. Here, the term "non-transitory" simply means that the storage medium is a tangible device, and does not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium.

According to an embodiment, a method according to embodiments of the disclosure may be included and provided in a computer program product. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or be distributed (e.g., downloaded or uploaded) online via an application store (e.g., PlayStore™), or between two user devices (e.g., smartphones) directly. If distributed online, at least part of the computer program product may be temporarily generated or at least temporarily stored in the machine-readable storage medium, such as a memory of the manufacturer's server, a server of the application store, or a relay server.

According to embodiments, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to embodiments, one or more of the above-described components or operations may be omitted, or one or more other components or operations may be added. In such a case, according to embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to embodiments, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added.

<FIG> is a block diagram illustrating a spread spectrum clock generator (SSCG) according to various embodiments.

Referring to <FIG>, an SSCG <NUM> may include a phase and frequency detector <NUM>, a charge pump <NUM>, a filter portion <NUM>, a spread spectrum clock generation modulation profile register <NUM>, a voltage-controlled oscillator (VCO) <NUM>, and a divider <NUM>.

According to an embodiment, the SSCG <NUM> may be included in the electronic device <NUM> of <FIG>. According to an embodiment, the SSCG <NUM> may generate a spread spectrum clock signal for data communication of the electronic device <NUM> of <FIG>. A communication interface for data communication of the electronic device <NUM> may include, for example, universal serial bus (USB), peripheral component interconnect express (PCIe), secure digital input/output (SDIO), secure digital card (SDC), and a mobile industry processor interface (MIPI) but is not limited thereto. According to an embodiment, the communication interface for data communication of the electronic device <NUM> may include the interface <NUM> of <FIG>.

According to an embodiment, the phase and frequency detector <NUM> may receive an input clock signal and a feedback signal output from the divider <NUM>. The phase and frequency detector <NUM> may detect the phase difference and the frequency difference between the input clock signal and the feedback signal, respectively. The phase and frequency detector <NUM> may transmit the detected phase difference and the detected frequency difference to the charge pump <NUM>.

According to an embodiment, the charge pump <NUM> may provide a voltage on the detected phase difference and the detected frequency difference to the filter portion <NUM>.

According to an embodiment, the filter portion <NUM> may filter the provided voltage and filtering (e.g., low-pass filtering).

According to an embodiment, the spread spectrum clock generation modulation profile register <NUM> may store a bit value for a spread spectrum method and a bit value for a spread ratio. The spread ratio may be a factor determining a spread bandwidth of a spread spectrum clock signal to be output from the VCO <NUM>.

According to an embodiment, in the case of a center-spread spectrum method, the bit value for the spread spectrum method of the spread spectrum clock generation modulation profile register <NUM> may be, for example, "<NUM>". In the case of a down-spread spectrum method, the bit value for the spread spectrum method of the spread spectrum clock generation modulation profile register <NUM> may be, for example, "<NUM>". When a spread ratio is, for example, <NUM>%, the bit value for the spread ratio of the spread spectrum clock generation modulation profile register <NUM> may be, for example, "<NUM>", and when a spread ratio is, for example, <NUM>%, the bit value for the spread ratio of the spread spectrum clock generation modulation profile register <NUM> may be, for example, "<NUM>". When a spread ratio is, for example, <NUM>%, the bit value for the spread ratio of the spread spectrum clock generation modulation profile register <NUM> may be, for example, "<NUM>", and when a spread ratio is, for example, <NUM>%, the bit value for the spread ratio of the spread spectrum clock generation modulation profile register <NUM> may be, for example, "<NUM>".

According to an embodiment, a modulator (not shown) may identify a spread spectrum method to be applied through the bit value for the spread spectrum method. The modulator may identify a spread ratio to be applied through the bit value for the spread ratio. The modulator may modulate a voltage received from the filter portion <NUM> based on the determined spread spectrum method and the determined spread ratio and may provide the modulated voltage to the VCO <NUM>.

According to an embodiment, the VCO <NUM> may output the spread spectrum clock signal by performing oscillation according to the modulated voltage.

According to an embodiment, the divider <NUM> may divide the spread spectrum clock signal output from the VCO <NUM>, generate a feedback signal divided by a predetermined value, and provide the generated feedback signal to the phase and frequency detector <NUM>.

<FIG> is a graph illustrating frequency band distributions when a spread spectrum is not used and when a spread spectrum is used according to various embodiments.

<FIG> illustrates an example of a frequency domain signal <NUM> of a clock signal to which a spread spectrum is not applied and a frequency domain signal <NUM> of a spread spectrum clock signal.

According to an embodiment, an area of the frequency domain signal <NUM> of the spread spectrum clock signal may be the same as an area of the frequency domain signal <NUM> of the clock signal to which the spread spectrum is not applied and accordingly, the energy of the frequency domain signal <NUM> is the same as that of the frequency domain signal <NUM>.

According to an embodiment, the frequency bandwidth of the frequency domain signal <NUM> of the spread spectrum clock signal may be greater than the frequency bandwidth of the frequency domain signal <NUM> of the clock signal to which the spread spectrum is not applied. A noise peak value <NUM> of the frequency domain signal <NUM> may be less than a noise peak value <NUM> of the frequency domain signal <NUM>. According to an embodiment, electromagnetic interference (EMI) emitted from an electronic device (e.g., the electronic device <NUM>) may be reduced in an output clock signal to which the spread spectrum is applied rather than an output clock signal to which the spread spectrum is not applied.

<FIG> are graphs illustrating frequency band distributions according to a spread spectrum method of a spread spectrum clock signal according to an embodiment.

<FIG> illustrates a frequency domain signal <NUM> of a clock signal to which a spread spectrum method is not applied and a frequency domain signal <NUM> of a spread spectrum clock signal generated by applying the down-spread spectrum method and a spread ratio of <NUM>%.

According to an embodiment, when the spread ratio is <NUM>% and a center frequency is f<NUM>, the frequency domain signal <NUM> may have a frequency band of f<NUM> - (f<NUM> ×<NUM>%) to f<NUM>.

<FIG> illustrates a frequency domain signal <NUM> of a clock signal to which the spread spectrum method is not applied and a frequency domain signal <NUM> of a spread spectrum clock signal generated by applying the center-spread spectrum method and a spread ratio of <NUM>%.

According to an embodiment, the frequency domain signal <NUM> may have a frequency band of f<NUM> - (f<NUM> × <NUM>%) to f<NUM> + (f<NUM> × <NUM>%).

<FIG> is a graph illustrating frequency band distributions according to a spread ratio of a center-spread spectrum clock signal according to an embodiment.

According to an embodiment, as shown in <FIG>, a signal <NUM> to which a spread ratio of <NUM>% is applied may be spread to have a frequency band expanded by <NUM>% of the center frequency on both sides based on the center frequency of a signal <NUM> to which a spread spectrum is not applied. For example, when a center frequency fc of the signal <NUM> to which the spread spectrum is not applied is f<NUM>, the signal <NUM> to which the spread ratio of <NUM>% is applied may have a frequency band of f<NUM> - (f<NUM> × <NUM>%) to f<NUM> + (f<NUM> × <NUM>%).

According to an embodiment, a signal <NUM> to which a spread ratio of <NUM>% is applied may spread a signal to have a frequency band expanded by <NUM>% of the center frequency on both sides based on the center frequency of the signal <NUM> to which the spread spectrum is not applied. For example, when the center frequency fc of the signal <NUM> to which the spread spectrum is not applied is f<NUM>, the signal <NUM> to which the spread ratio of <NUM>% is applied may have a frequency band of f<NUM> - (f<NUM> × <NUM>%) to f<NUM> + (f<NUM> × <NUM>%).

According to an embodiment, setting a spread ratio against an operating frequency to a maximum value supported by a communication interface (e.g., the interface <NUM> of <FIG>) in a range of securing the stability of an electronic device (<NUM> of <FIG>) (e.g., the electronic device <NUM> of <FIG>) may minimize the EMI phenomenon. When the spread rate increases, a frequency in a range of the operating frequency and a multiplication frequency of the communication interface (e.g., the interface <NUM> of <FIG>) to which a spread spectrum function is applied may overlap with a channel frequency of connected communication (e.g., Wi-Fi communication or radio frequency (RF) communication). The communication performance may be degraded when the frequency in the range of the operating frequency and the multiplication frequency overlap with the communication channel frequency.

<FIG> are diagrams illustrating an operation of an electronic device according to various embodiments.

Referring to <FIG>, an electronic device <NUM> (e.g., the electronic device <NUM> of <FIG>) may include a first communication module <NUM>, a second communication module <NUM>, an SSCG <NUM> (e.g., the SSCG <NUM> of <FIG>) including a first register <NUM> (e.g., the spread spectrum clock modulation profile register <NUM>), a memory <NUM> (e.g., the memory <NUM>), and a processor <NUM> (e.g., the processor <NUM> of <FIG>).

According to an embodiment, the first communication module <NUM> and the second communication module <NUM> may be included in the communication module <NUM> of <FIG>. The first communication module <NUM> may be, for example, a Wi-Fi communication module and the second communication module <NUM> may be, for example, an RF communication module for mobile communication (e.g., fourth generation (<NUM>) and <NUM>).

According to an embodiment, the SSCG <NUM> may generate a spread spectrum clock signal for data communication of the electronic device <NUM>. According to an embodiment, a frequency of the spread spectrum clock signal generated by the SSCG <NUM> may be multiplied and used for data communication of the electronic device <NUM>. The data communication may be, for example, data communication between modules (e.g., the display module <NUM>, the input module <NUM>, the audio module <NUM>, the sensor module <NUM>, and the camera module <NUM> of <FIG>) and/or electronic components (e.g., the processor <NUM> and the memory <NUM> of <FIG>) in the electronic device <NUM> (e.g., the electronic device <NUM> of <FIG>) or data communication with an external electronic device (e.g., the electronic device <NUM> of <FIG>), but is not limited to the data communication between the described modules and/or electronic components.

According to an embodiment, the first register <NUM> in the SSCG <NUM> may include a bit value for a spread spectrum method and a bit value for a spread ratio. The SSCG <NUM> may generate the spread spectrum clock signal having a low noise peak value without overlapping with a frequency band of a channel of the first communication (e.g., the Wi-Fi communication) or a channel of the second communication (e.g., long-term evolution (LTE) communication) as the processor <NUM> changes the bit value for the spread spectrum method and the bit value for the spread ratio in the first register <NUM>. The detailed operations of the processor <NUM> is described with reference to <FIG>.

According to an embodiment, the processor <NUM> may perform operations <NUM> to <NUM> shown in <FIG>.

According to an embodiment, in operation <NUM>, the processor <NUM> may detect the occurrence of a communication state change event. The communication state change event may be, for example, a case in which system power of the electronic device <NUM> is turned on, a case in which the electronic device <NUM> is connected to new communication, or a case in which a previously connected communication channel is changed.

According to an embodiment, in operation <NUM>, when the communication state change event occurs, the processor <NUM> may set the spread spectrum method to the center-spread spectrum method in the SSCG <NUM> and set the spread ratio to a first spread ratio (e.g., a maximum spread ratio). For example, as shown in <FIG>, data communication <NUM> of the electronic device <NUM> may be data communication according to an SDIO interface. When the communication state change event occurs, the processor <NUM> may set a bit value for a spread spectrum method <NUM> in the first register <NUM> to "<NUM>" corresponding to the center-spread spectrum method and set a bit value for a spread ratio <NUM> in the first register <NUM> to "<NUM>" corresponding to the first spread ratio (e.g., <NUM>%).

According to an embodiment, in operation <NUM>, the processor <NUM> may determine whether the electronic device <NUM> is connected to communication through the first communication module <NUM> or the second communication module <NUM>. The first communication may be, for example, Wi-Fi communication, and the second communication may be, for example, RF communication for mobile communication (e.g., <NUM> and <NUM>).

According to an embodiment, when the electronic device <NUM> is not connected to the first communication and the second communication, the processor <NUM> may maintain the center-spread spectrum method and the first spread ratio set to the SSCG <NUM>. The SSCG <NUM> may generate and output a spread spectrum clock signal based on the center-spread spectrum method and the first spread ratio.

According to an embodiment, in operation <NUM>, when the electronic device <NUM> is connected to at least one of the first communication and the second communication, the processor <NUM> may identify a frequency band of a channel of the connected communication. For example, a Wi-Fi channel frequency is known as shown in Table <NUM> below and an LTE channel frequency is known as shown in Table <NUM> below. According to an embodiment, when the connected communication channel is channel <NUM> of Wi-Fi <NUM> gigahertz (GHz), the processor <NUM> may confirm that a frequency of the communication channel connected to the electronic device <NUM> is <NUM> with reference to Table <NUM>.

According to an embodiment, in operation <NUM>, the processor <NUM> may determine whether a first frequency in a range of a first operating frequency and multiplication frequencies of the first frequency belong to a frequency band of a channel of connected communication.

According to an embodiment, the range of the first operating frequency may be determined according to the center frequency fc, the center-spread spectrum method set to the SSCG <NUM>, and the first spread ratio set to the SSCG <NUM>. For example, the data communication <NUM> may be data communication according to SDIO, the center frequency may be <NUM> megahertz (MHz), the bit value for the spread spectrum method <NUM> in the first register <NUM> may be "<NUM>", and the bit value for the spread ratio <NUM> in the first register <NUM> may be "<NUM>". As shown in <FIG>, the processor <NUM> may determine the range of the first operating frequency of <NUM> to <NUM> according to fc - (fc × <NUM>%) to fc + (fc × <NUM>%).

According to an embodiment, when a first communication module is connected to channel <NUM> of Wi-Fi <NUM>, the processor <NUM> may determine whether the first frequency in <NUM> to <NUM> and the multiplication frequencies of the first frequency belong to a frequency band (e.g., <NUM> band) of channel <NUM> of Wi-Fi <NUM>. In an example, the processor <NUM> may confirm that <NUM> multiplication-frequency of <NUM> in <NUM> to <NUM> belongs to the frequency band of channel <NUM> of Wi-Fi <NUM>. According to another embodiment, when the first communication module is not connected to Wi-Fi and a second communication module is connected to LTE band <NUM>, referring to Table <NUM>, the processor <NUM> may confirm that the first frequency in <NUM> to <NUM> and the multiplication frequencies of the first frequency do not belong to a frequency band of LTE band <NUM> (e.g., uplink band <NUM> to <NUM> and/or downlink band <NUM> to <NUM>).

In operation <NUM>, when the first frequency in the range of the first operating frequency and the multiplication frequencies of the first frequency do not belong to a frequency band of a connected wireless communication channel, the processor <NUM> may maintain the center-spread spectrum method and the first spread ratio set to the SSCG <NUM>. According to an embodiment, the SSCG <NUM> may generate and output a spread spectrum clock signal based on the center-spread spectrum method and the first spread ratio.

According to an embodiment, a wireless communication channel <NUM> overlapping with at least one of a frequency in a range of an operating frequency and multiplication frequencies may be predetermined in a lookup table (e.g., the lookup table of <FIG>) stored in the memory <NUM> according to the type of the data communication <NUM>, the center frequency, the spread spectrum method, and the spread ratio, for each operating frequency range <NUM>. Referring to <FIG>, in the case of an SDIO interface, the center frequency of <NUM>, the spread spectrum bit value of "<NUM>", and the spread ratio bit value of "<NUM>", the overlapping wireless communication channel may be determined as channel <NUM><NUM> of Wi-Fi <NUM> band.

According to an embodiment, in operation <NUM>, when the processor <NUM> confirms that at least one of the first frequency in the range of the first operating frequency and the multiplication frequencies of the first frequency belongs to the frequency band of the connected wireless communication channel, the processor <NUM> may perform operation <NUM>.

Referring to <FIG>, in operation <NUM>, when the processor <NUM> confirms that at least one of the first frequency in the range of the first operating frequency and the multiplication frequencies of the first frequency belongs to the frequency band of the connected wireless communication channel, the processor <NUM> may change the center-spread spectrum method set to the SSCG <NUM> to the down-spread spectrum method.

According to an embodiment, in operation <NUM>, the processor <NUM> may change the bit value for the spread spectrum method <NUM> in the first register <NUM> from "<NUM>" to "<NUM>".

According to an embodiment, in operation <NUM>, the processor <NUM> may determine whether at least one of a second frequency in a range of a second operating frequency and multiplication frequencies of the second frequency belongs to the frequency band of the connected wireless communication channel.

According to an embodiment, the range of the second operating frequency may be determined according to the center frequency fc, the down-spread spectrum method set to the SSCG <NUM>, and the first spread ratio set to the SSCG <NUM>. For example, the data communication <NUM> may be data communication according to SDIO, the center frequency may be <NUM>, the bit value for the spread spectrum method <NUM> in the first register <NUM> may be "<NUM>", and the bit value for the spread ratio <NUM> in the first register <NUM> may be "<NUM>". As shown in <FIG>, the processor <NUM> may determine the range of the second operating frequency of <NUM> to <NUM> according to f<NUM> - (f<NUM> × <NUM>%) to f<NUM>.

According to an embodiment, in operation <NUM>, when the second frequency in the range of the second operating frequency and the multiplication frequencies of the second frequency do not belong to the frequency band of the connected wireless communication channel, the processor <NUM> may maintain the down-spread spectrum method and the first spread ratio set to the SSCG <NUM>. According to an embodiment, the SSCG <NUM> may generate and output a spread spectrum clock signal based on the down-spread spectrum method and the first spread ratio.

According to an embodiment, in operation <NUM>, when a first communication module is not connected to Wi-Fi and a second communication module is connected to LTE band <NUM>, the processor <NUM> may confirm that <NUM> multiplication-frequency (<NUM>) of a frequency of <NUM> in the range of the second operating frequency of <NUM> to <NUM> belongs to the downlink band of <NUM> to <NUM> of LTE band <NUM>.

According to an embodiment, the processor <NUM> may perform operation <NUM> when at least one of the second frequency in the range of the second operating frequency and the multiplication frequencies of the second frequency belongs to the frequency band of the connected wireless communication channel.

Referring to <FIG>, in operation <NUM>, the processor <NUM> may determine whether the spread ratio set to the SSCG <NUM> is minimum. According to an embodiment, when the bit value for the spread ratio <NUM> in the first register <NUM> is "<NUM>", the processor <NUM> may confirm that the spread ratio set to the SSCG <NUM> is not minimum.

According to an embodiment, the processor <NUM> may perform operation <NUM> when it is confirmed that the spread ratio set to the first register <NUM> is a minimum spread ratio. This is described further with reference to <FIG>.

According to an embodiment, in operation <NUM>, when the processor <NUM> confirms that the spread ratio set to the SSCG <NUM> is not minimum, the processor <NUM> may change the down-spread spectrum method set to the SSCG <NUM> to the center-spread spectrum method and change the first spread ratio (e.g., <NUM>%) set to the SSCG <NUM> to a second spread ratio (e.g., <NUM>%).

According to an embodiment, the processor <NUM> may change the bit value for the spread spectrum method <NUM> of the first register <NUM> from "<NUM>" to "<NUM>" and change the bit value for the spread ratio <NUM> from "<NUM>" to "<NUM>".

According to an embodiment, in operation <NUM>, the processor <NUM> may determine whether at least one of a third frequency in a range of a third operating frequency and multiplication frequencies of the third frequency belongs to the frequency band of the connected wireless communication channel.

According to an embodiment, the range of the third operating frequency may be determined according to the center frequency fc, the center-spread spectrum method set to the SSCG <NUM>, and the second spread ratio (e.g., <NUM>%) set to the SSCG <NUM>. For example, the data communication <NUM> may be data communication according to SDIO, the center frequency may be <NUM>, the bit value for the spread spectrum method <NUM> in the first register <NUM> may be "<NUM>", and the bit value for the spread ratio <NUM> in the first register <NUM> may be "<NUM>". As shown in <FIG>, the processor <NUM> may determine the range of the third operating frequency of <NUM> to <NUM> according to fc - (fc × <NUM>%) to fc + (fc × <NUM>%).

According to an embodiment, in operation <NUM>, when the third frequency in the range of the third operating frequency and the multiplication frequencies of the third frequency do not belong to the frequency band of the connected wireless communication channel, the processor <NUM> may maintain the center-spread spectrum method and the second spread ratio set to the SSCG <NUM>. According to an embodiment, the SSCG <NUM> may generate and output a spread spectrum clock signal based on the center-spread spectrum method and the second spread ratio.

According to an embodiment, the processor <NUM> may perform operation <NUM> when at least one of the third frequency in the third operating frequency and the multiplication frequencies of the third frequency belongs to the frequency band of the connected wireless communication channel.

According to an embodiment, in operation <NUM>, when at least one of the third frequency and the multiplication frequencies of the third frequency belongs to the frequency band of the connected wireless communication channel, the processor <NUM> may change the center-spread spectrum method set to the SSCG <NUM> to the down-spectrum spread method.

According to an embodiment, in operation <NUM>, the processor <NUM> may determine whether at least one of a fourth frequency in a range of a fourth operating frequency and multiplication frequencies of the fourth frequency belongs to the frequency band of the connected wireless communication channel.

According to an embodiment, the range of the fourth operating frequency may be determined according to the center frequency fc, the down-spread spectrum method set to the SSCG <NUM>, and the second spread ratio set to the SSCG <NUM>. For example, the data communication <NUM> may be data communication according to SDIO, the center frequency may be <NUM>, the bit value for the spread spectrum method <NUM> in the first register <NUM> is "<NUM>", and the bit value for the spread ratio <NUM> in the first register <NUM> may be "<NUM>". As shown in <FIG>, the processor <NUM> may determine the range of the fourth operating frequency of <NUM> to <NUM> according to f<NUM> - (f<NUM> × <NUM>%) to f<NUM>.

According to an embodiment, in operation <NUM>, when the fourth frequency in the range of the fourth operating frequency and the multiplication frequencies of the fourth frequency do not belong to the frequency band of the connected wireless communication channel, the processor <NUM> may maintain the down-spread spectrum method and the second spread ratio set to the SSCG <NUM>. According to an embodiment, the SSCG <NUM> may generate and output a spread spectrum clock signal based on the down-spread spectrum method and the second spread ratio.

According to an embodiment, the processor <NUM> may perform operation <NUM> when at least one of the fourth frequency in the range of the fourth operating frequency and the multiplication frequencies of the fourth frequency belongs to the frequency band of the connected wireless communication channel.

According to an embodiment, the processor <NUM> may repeat operations <NUM>, <NUM>, <NUM>, <NUM>, and <NUM>. Through this repetition, the down-spread spectrum method and the spread ratio of <NUM>% may be set to the SSCG <NUM>.

In operation <NUM>, the processor <NUM> may determine whether the spread ratio set to the SSCG <NUM> is minimum. As shown in <FIG>, since the spread ratio of <NUM>% is a minimum spread ratio, the processor <NUM> may perform operation <NUM>.

According to an embodiment, in operation <NUM>, the processor <NUM> may change the down-spread spectrum method set to the SSCG <NUM> to the center-spread spectrum method and change the minimum spread ratio set to the SSCG <NUM> to a maximum spread ratio. According to an embodiment, since at least one of a frequency in a range of an operating frequency and multiplication frequencies determined according to all spread ratios supported by the center-spread spectrum method, the down-spread spectrum method, and a communication interface (e.g., the interface <NUM> of <FIG>) belongs to the frequency band of the connected wireless communication, the processor <NUM>, in operation <NUM>, may set the center-spread spectrum method and the maximum spread ratio to the SSCG <NUM>.

According to an embodiment, in operation <NUM>, the SSCG <NUM> may generate and output a spread spectrum clock signal based on the center-spread spectrum method and the maximum spread ratio (e.g., a spread ratio of <NUM>%).

<FIG> is a flowchart illustrating an operating method of an electronic device.

According to an embodiment, in operation <NUM>, a processor (e.g., <NUM> of <FIG>) may detect the occurrence of a communication state change event. The communication state change event may be, for example, a case in which system power of an electronic device (e.g., <NUM> of <FIG>) is turned on, a case in which an electronic device is connected to new communication, or a case in which a previously connected communication channel is changed.

According to an embodiment, in operation <NUM>, when the communication state change event occurs, a processor (e.g., <NUM> in <FIG>) may set the spread spectrum method to the center-spread spectrum method in an SSCG (e.g., <NUM> in <FIG>) and set the spread ratio to the first spread ratio (e.g., the maximum spread ratio). For example, as shown in <FIG>, data communication (e.g., <NUM> in <FIG>) of an electronic device (e.g., <NUM> in <FIG>) may be data communication according to an SDIO interface. When the communication state change event occurs, a processor (e.g., <NUM> in <FIG>) may set a bit value (e.g., <NUM> of <FIG>) for the spread spectrum method in a first register (e.g., <NUM> in <FIG>) to "<NUM>" corresponding to the center-spread spectrum method and set a bit value (e.g., <NUM> in <FIG>) for the spread ratio in the first register (e.g., <NUM> in <FIG>" corresponding to the first spread ratio (e.g., <NUM>%).

According to an embodiment, in operation <NUM>, a processor (e.g., <NUM> of <FIG>) may confirm that an electronic device (<NUM> in <FIG>) is connected to communication through a first communication module (e.g., <NUM> of <FIG>) or a second communication module (e.g., <NUM> of <FIG>). The first communication may be, for example, Wi-Fi communication and the second communication may be, for example, RF communication for mobile communication (e.g., <NUM> and <NUM>). According to an embodiment, in operation <NUM>, a processor (e.g., <NUM> of <FIG>) may confirm that an electronic device (e.g., <NUM> of <FIG>) is connected to Wi-Fi communication through the first communication module (e.g., <NUM> of <FIG>).

According to an embodiment, in operation <NUM>, a processor (e.g., <NUM> of <FIG>) may identify a frequency band of a channel of connected communication. For example, in operation <NUM>, when the connected communication channel is channel <NUM> of Wi-Fi <NUM>, a processor (e.g., <NUM> of <FIG>) may confirm that a frequency of the communication channel connected to an electronic device (e.g., <NUM> of <FIG>) is <NUM> with reference to Table <NUM>.

According to an embodiment, in operation <NUM>, a processor (e.g., <NUM> of <FIG>) may determine whether the first frequency in the range of the first operating frequency and the multiplication frequencies of the first frequency belong to the frequency band of the connected communication channel. As described above, the range of the first operating frequency may be determined according to the center frequency fc, the center-spread spectrum method set to an SSCG (e.g., <NUM> in <FIG>), and the first spread ratio set to an SSCG (e.g., <NUM> in <FIG>), and data communication (e.g., <NUM> in <FIG>) may be data communication according to SDIO, the center frequency may be <NUM>, a bit value (e.g., <NUM> in <FIG>) for the spread spectrum method in a first register (e.g., <NUM> in <FIG>) may be "<NUM>" and a bit value (e.g., <NUM> in <FIG>) for the spread ratio (e.g., <NUM> in <FIG>) in the first register (e.g., <NUM> in <FIG>) may be "<NUM>". As shown in <FIG>, a processor (e.g., <NUM> in <FIG>) may determine the range of the first operating frequency of <NUM> to <NUM> according to fc - (fc × <NUM>%) to fc + (fc × <NUM>%).

According to an embodiment, when a first communication module is connected to channel <NUM> of Wi-Fi <NUM>, a processor (e.g., <NUM> in <FIG>) may determine whether the first frequency in <NUM> to <NUM> and the multiplication frequencies of the first frequency belong to the frequency band (e.g., <NUM> band) of channel <NUM> of Wi-Fi <NUM>. In an example, a processor (e.g., <NUM> in <FIG>) may confirm that <NUM> multiplication-frequency of <NUM> in <NUM> to <NUM> belongs to the frequency band of channel <NUM> of Wi-Fi <NUM>.

According to an embodiment, in operation <NUM>, when a processor (e.g., <NUM> of <FIG>) confirms that at least one of the first frequency in the range of the first operating frequency and the multiplication frequencies of the first frequency belongs to the frequency band of the wireless communication channel, the processor (e.g., <NUM> of <FIG>), in operation <NUM>, may change the center-spread spectrum method set to an SSCG (e.g., <NUM> of <FIG>) to the down-spread spectrum method.

According to an embodiment, in operation <NUM>, a processor (e.g., <NUM> of <FIG>) may change a bit value (e.g., <NUM> of <FIG>) for the spread spectrum method in a first register (e.g., <NUM> of <FIG>) from "<NUM>" to "<NUM>".

According to an embodiment, in operation <NUM>, a processor (e.g., <NUM> of <FIG>) may determine whether at least one of the second frequency in the range of the second operating frequency and the multiplication frequencies of the second frequency belongs to the frequency band of the wireless communication channel.

According to an embodiment, as described above, the range of the second operating frequency may be determined according to the center frequency fc, the down-spread spectrum method set to an SSCG (e.g., <NUM> of <FIG>), and the first spread ratio set to the SSCG (e.g., <NUM> of <FIG>), and data communication (e.g., <NUM> in <FIG>) may be data communication according to SDIO, the center frequency may be <NUM>, a bit value (e.g., <NUM> in <FIG>) for the spread spectrum method in a first register (e.g., <NUM> of <FIG>) may be "<NUM>", and a bit value (e.g., <NUM> in <FIG>) for the spread ratio in the first register (e.g., <NUM> of <FIG>) may be "<NUM>". As shown in <FIG>, a processor (e.g., <NUM> of <FIG>) may determine the range of the second operating frequency of <NUM> to <NUM> according to f<NUM> - (f<NUM> × <NUM>%) to f<NUM>.

According to an embodiment, in operation <NUM>, a processor (e.g., <NUM> of <FIG>) may confirm that the second frequency in the range of the second operating frequency of <NUM> to <NUM> and the multiplication frequencies of the second frequency do not belong to the frequency band of channel <NUM> of the connected wireless communication channel of Wi-Fi <NUM>.

According to an embodiment, in operation <NUM>, when the second frequency in the range of the second operating frequency and the multiplication frequencies of the second frequency do not belong to the frequency band of the connected wireless communication channel, a processor (e.g., <NUM> of <FIG>) may maintain the down-spread spectrum method and the first spread ratio (e.g., <NUM>%) set to an SSCG (e.g., <NUM> of <FIG>). According to an embodiment, the SSCG (e.g., <NUM> of <FIG>) may generate and output a spread spectrum clock signal based on the down-spread spectrum method and the first spread ratio.

According to an embodiment, the electronic device <NUM> may include the first communication module <NUM> for the first wireless communication, the second communication module <NUM> for the second wireless communication, the SSCG <NUM> that generates a spread spectrum clock signal for data communication of the electronic device <NUM>, and the processor <NUM>.

According to an embodiment, the processor <NUM>, when a communication state change event of the electronic device <NUM> occurs, may set the spread spectrum method and the spread ratio to the first spread spectrum method and the first spread ratio to the SSCG, respectively, and may determine whether the electronic device <NUM> is connected to the first wireless communication and the second wireless communication, when the electronic device <NUM> is connected to at least one of the first wireless communication and the second wireless communication, may identify the frequency band of the channel of connected wireless communication and determine whether at least one of the first frequency in the range of the first operating frequency and the multiplication frequencies of the first frequency belongs to the frequency band of the channel, and when the first frequency and the multiplication frequencies of the first frequency do not belong to the frequency band, may maintain the first spread spectrum method and the first spread ratio so that the SSCG <NUM> generates the spread spectrum clock signal based on the first spread spectrum method and the first spread ratio.

According to an embodiment, the range of the first operating frequency may be determined based on the center frequency of data communication, the first spread spectrum method, and the first spread ratio.

According to an embodiment, the processor <NUM>, when at least one of the first frequency and the multiplication frequencies of the first frequency belongs to the frequency band of the connected wireless communication channel, may change the first spread spectrum method to the second spread spectrum method and determine whether at least one of the second frequency in the range of the second operating frequency and the multiplication frequencies of the second frequency belongs to the frequency band of the connected wireless communication channel.

According to an embodiment, the range of the second operating frequency may be determined based on the center frequency of data communication, the second spread spectrum method, and the first spread ratio.

According to an embodiment, when the second frequency and the multiplication frequencies of the second frequency do not belong to the frequency band of the connected wireless communication channel, the processor <NUM> may maintain the second spread spectrum method and the first spread ratio and the SSCG <NUM> may generate the spread spectrum clock signal based on the second spread spectrum method and the first spread ratio.

According to an embodiment, the processor <NUM>, when at least one of the second frequency and the multiplication frequencies of the second frequency belongs to the frequency band of the connected wireless communication channel, may determine whether the first spread ratio is minimum, and when the first spread ratio is not minimum, may change the second spread spectrum method to the first spread spectrum method and may change the first spread ratio to the second spread ratio.

According to an embodiment, the processor <NUM> may determine whether at least one of the third frequency in the range of the third operating frequency and the multiplication frequencies of the third frequency belongs to the frequency band.

According to an embodiment, the range of the third operating frequency may be determined based on the center frequency of data communication, the first spread spectrum method, and the second spread ratio.

According to an embodiment, when at least one of the third frequency and the multiplication frequencies of the third frequency belongs to the frequency band of the connected wireless communication channel, the processor <NUM> may change the first spread spectrum method to the second spread spectrum method and may determine whether at least one of the fourth frequency in the range of the fourth operating frequency and the multiplication frequencies of the fourth frequency belongs to the frequency band of the connected wireless communication channel.

According to an embodiment, the range of the fourth operating frequency may be determined based on the center frequency of data communication, the second spread spectrum method, and the second spread ratio.

According to an embodiment, the processor <NUM> may set a bit value corresponding to the first spread spectrum method and a bit value corresponding to the first spread ratio to the first register <NUM> in the SSCG <NUM>.

According to an embodiment, the first wireless communication may be Wi-Fi communication and the second wireless communication may be RF communication.

According to an embodiment, the first spread spectrum method may include the spread spectrum method.

According to an embodiment, the electronic device <NUM> may include the first communication module <NUM> for the first wireless communication, the second communication module <NUM> for the second wireless communication, the SSCG <NUM> that generates the spread spectrum clock signal for data communication of the electronic device <NUM>, the processor <NUM>, and the memory <NUM>.

According to an embodiment, the processor <NUM> may set the spread spectrum method and the spread ratio to the first spread spectrum method and the first spread ratio in the SSCG <NUM>, respectively, when the electronic device <NUM> is connected to at least one of the first wireless communication and the second wireless communication, may determine whether at least one of the first frequency in the range of the first operating frequency and the multiplication frequencies of the first frequency belongs to the frequency band of the connected wireless communication channel, and when at least one of the first frequency and the multiplication frequencies of the first frequency belongs to the frequency band, may change the first spread spectrum method set to the SSCG <NUM> to the second spread spectrum method and may determine whether at least one of the second frequency in the range of the second operating frequency and the multiplication frequencies of the second frequency belongs to the frequency band.

According to an embodiment, the memory <NUM> may store a lookup table used to determine whether at least one of a frequency in a range of an operating frequency and multiplication frequencies of the frequency of a clock signal belongs to the frequency band of the connected wireless communication channel.

According to an embodiment, when at least one of the second frequency and the multiplication frequencies of the second frequency belongs to the frequency band, the processor <NUM> may change the second spread spectrum method to the first spread spectrum method, change the first spread ratio to the second spread ratio, and determine whether at least one of the third frequency in the range of the third operating frequency and the multiplication frequencies of the third frequency belongs to the frequency band.

According to an embodiment, when at least one of the third frequency and the multiplication frequencies of the third frequency belongs to the frequency band, the processor <NUM> may change the first spread spectrum method to the second spread spectrum method and determine whether at least one of the fourth frequency in the range of the fourth operating frequency and the multiplication frequencies of the fourth frequency belongs to the frequency band.

According to an embodiment, when the first frequency and the multiplication frequencies of the first frequency do not belong to the frequency band, the processor <NUM> may maintain the first spread spectrum method and the first spread ratio so that the SSCG <NUM> generates the spread spectrum clock signal based on the first spread spectrum method and the first spread ratio.

According to an embodiment, when the second frequency and the multiplication frequencies of the second frequency do not belong to the frequency band, the processor <NUM> may maintain the second spread spectrum method and the first spread ratio so that the SSCG <NUM> generates the spread spectrum clock signal based on the second spread spectrum method and the first spread ratio.

According to an embodiment, when the third frequency and the multiplication frequencies of the third frequency do not belong to the frequency band, the processor <NUM> may maintain the first spread spectrum method and the second spread ratio so that the SSCG <NUM> generates the spread spectrum clock signal based on the first spread spectrum method and the second spread ratio.

According to an embodiment, when the fourth frequency and the multiplication frequencies of the fourth frequency do not belong to the frequency band, the processor <NUM> may maintain the second spread spectrum method and the second spread ratio so that the SSCG <NUM> generates the spread spectrum clock signal based on the second spread spectrum method and the second spread ratio.

According to an embodiment, when the first spread ratio is a minimum spread ratio, the processor <NUM> may change the spread spectrum method and spread ratio to the center-spread spectrum method and the maximum spread ratio in the SSCG <NUM>, respectively, and maintain the center-spread spectrum method and the maximum spread ratio so that the SSCG <NUM> generates the spread spectrum clock signal based on the center-spread spectrum method and the maximum spread ratio.

According to an embodiment, the method of operating the electronic device <NUM> may include operation <NUM> of detecting the occurrence of the communication state change event of the electronic device <NUM>, operation <NUM> of setting the spread spectrum method and the spread ratio to the first spread spectrum method and the first spread ratio in the spread spectrum clock signal generator <NUM> for data communication of the electronic device <NUM>, respectively, operation <NUM> of determining whether the electronic device <NUM> is connected to the first wireless communication and the second wireless communication, operation <NUM> of identifying the frequency band of the channel of connected wireless communication when the electronic device <NUM> is connected to at least one of the first communication and the second wireless communication, operation <NUM> of determining whether at least one of the first frequency in the range of the first operating frequency and the multiplication frequencies of the first frequency belongs to the frequency band of the connected wireless communication channel, and when the first frequency and the multiplication frequencies of the first frequency do not belong to the frequency band of the connected wireless communication channel, operation <NUM> of maintaining the first spread spectrum method and the first spread ratio so that the SSCG <NUM> generates the spread spectrum clock signal based on the first spread spectrum method and the first spread ratio.

According to an embodiment, the method of operating the electronic device <NUM> may further include, when at least one of the first frequency and the multiplication frequencies of the first frequency belongs to the frequency band of the connected wireless communication channel, operation <NUM> of changing the first spread spectrum method to the second spread spectrum method and operation <NUM> of determining whether at least one of the second frequency in the range of the second operating frequency and the multiplication frequencies of the second frequency belongs to the frequency band of the connected wireless communication channel.

According to an embodiment, the method of operating the electronic device <NUM>, when the second frequency and the multiplication frequencies of the second frequency do not belong to the frequency band, may further include operation <NUM> of maintaining the second spread spectrum method and the first spread ratio so that the SSCG <NUM> generates the spread spectrum clock signal based on the second spread spectrum method and the first spread ratio.

According to an embodiment, the method of operating the electronic device <NUM>, when at least one of the second frequency and the multiplication frequencies of the second frequency belongs to the frequency band, may further include operation <NUM> of determining whether the first spread ratio is minimum, and when the first spread ratio is not minimum, may further include operation <NUM> of changing the second spread spectrum method to the first spread spectrum method and changing the first spread ratio to the second spread ratio.

According to an embodiment, the method of operating the electronic device <NUM> may further include operation <NUM> of determining whether at least one of the third frequency in the range of the third operating frequency and the multiplication frequencies of the third frequency belongs to the frequency band.

According to an embodiment, the method of operating the electronic device <NUM>, when the third frequency and the multiplication frequencies of the third frequency do not belong to the frequency band, may further include operation <NUM> of maintaining the first spread spectrum method and the second spread ratio so that the SSCG <NUM> generates the spread spectrum clock signal based on the first spread spectrum method and the second spread ratio.

According to an embodiment, in operation <NUM> of determining whether the first spread ratio is minimum, the method of operating the electronic device <NUM>, when the first spread ratio is minimum, may further include operation <NUM> of changing the spread spectrum method to the center-spread spectrum method and changing the spread ratio to the maximum spread ratio.

Claim 1:
An electronic device (<NUM>) comprising:
a first communication module (<NUM>) for first wireless communication;
a second communication module (<NUM>) for second wireless communication;
a spread spectrum clock generator, SSCG (<NUM>), configured to generate a spread spectrum clock signal for data communication of the electronic device (<NUM>); and
a processor (<NUM>),
characterized in that the processor (<NUM>) is configured to,
when a communication state change event of the electronic device (<NUM>) occurs, set a spread spectrum method and a spread ratio to a first spread spectrum method and a first spread ratio in the SSCG (<NUM>), respectively, and determine whether the electronic device (<NUM>) is connected to the first wireless communication and the second wireless communication;
when the electronic device (<NUM>) is connected to at least one of the first wireless communication and the second wireless communication, identify a frequency band of a channel of the connected wireless communication and determine whether at least one of a first frequency in a range of a first operating frequency and multiplication frequencies of the first frequency belongs to the frequency band of the channel;
when the first frequency and the multiplication frequencies of the first frequency do not belong to the frequency band, maintain the first spread spectrum method and the first spread ratio so that the SSCG (<NUM>) generates the spread spectrum clock signal based on the first spread spectrum method and the first spread ratio, wherein the range of the first operating frequency is determined based on a center frequency of the data communication, the first spread spectrum method, and the first spread ratio; and
when at least one of the first frequency and the multiplication frequencies of the first frequency belongs to the frequency band, change the first spread spectrum method set to the SSCG (<NUM>) to a second spread spectrum method and determine whether at least one of a second frequency in a range of a second operating frequency and multiplication frequencies of the second frequency belongs to the frequency band, wherein the range of the second operating frequency is determined based on the center frequency, the second spread spectrum method, and the first spread ratio.