Patent Publication Number: US-2018054383-A1

Title: Dsp interface apparatus and control method for the same

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is based on and claims priority under 35 U.S.C. §119 to Korean Patent Application No. 10-2016-0103743, filed on Aug. 16, 2016 in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in its entirety. 
     BACKGROUND 
     1. Field 
     The present disclosure relates generally to a digital signal processor (DSP) interface apparatus capable of controlling an input and an output of a DSP which processes data, and a method of controlling the same. 
     2. Description of Related Art 
     A digital signal processor (DSP) is a microprocessor having an integrated circuit (IC) chip which processes data through a digital operation. The DSP may be realized by improving general-purpose microprocessor architecture to a large extent to increase high-speed operation capability, simplify a structure, and decrease a size. 
     Generally, a DSP may perform operations such as filtering, Fourier transformation, calculation of a correlation function, coding, modulation/demodulation, differentiation, integration, adaptive signal processing, etc. Thus, a DSP has recently been employed in voice and communication systems related to voice synthesis, voice recognition, speech coding, compression, a medium/high-speed modem, an echo canceler, etc. Furthermore, a DSP has been extensively used in the field of high-speed digital control, including image processing, servo-motor control, etc. 
     As a DSP has been used in many ways, the number and types of hardware devices to be connected to the DSP have been increased. Thus, research has been actively conducted to provide an environment in a DSP may output best results under various conditions. 
     SUMMARY 
     Therefore, it is an example aspect of the present disclosure to provide a digital signal processor (DSP) interface apparatus capable of variably setting an interconnection between a DSP and a plurality of hardware devices, and a method of controlling the same. 
     Additional aspects of the disclosure will be set forth in part in the description which follows and, in part, will be apparent from the description. 
     In accordance with an example aspect of the present disclosure, a DSP interface apparatus includes a path setter comprising path setting circuitry configured to set a data transmission path between at least one of a plurality of hardware devices and a DSP; and a controller configured to control the path setter to set the data transmission path based on predetermined configuration information. 
     The path setter may connect at least one of a plurality of operation parts and a memory of the DSP and at least one of the plurality of hardware devices. 
     The controller may control the path setter to set the data transmission path using the configuration information, the configuration information including at least one of: information regarding priorities assigned to the plurality of hardware devices, information regarding type of the data transmitted through the data transmission path, and information regarding whether data is to be transmitted bidirectionally. 
     The path setter may set a first transmission path through which data is transmitted from the DSP to at least one of the plurality of hardware devices, and a second transmission path through which data is transmitted from at least one of the plurality of hardware devices to the DSP. 
     The path setter may include various path setting circuitry including, for example, and without limitation, a first multiplexer configured to select at least one of the plurality of operation parts and the memory of the DSP to provide data to the first transmission path; a first demultiplexer configured to select at least one of the plurality of hardware devices to receive data from the first transmission path; a second multiplexer configured to select at least one of the plurality of hardware devices to provide data to the second transmission path; and a second demultiplexer configured to select at least one of the plurality of operation parts and the memory of the DSP to receive data from the second transmission path. 
     The path setter may include a first buffer configured to store data transmitted through the first transmission path; and a second buffer configured to store data transmitted through the second transmission path. 
     The controller may control the first buffer and the second buffer to provide data when data is stored to a predetermined target level. 
     The path setter may include a first data transformation part comprising data transformation circuitry configured to transform data transmitted through the first transmission path; and a second data transformation part configured to transform data transmitted through the second transmission path. 
     The controller may control the path setter to transmit data independently through the first transmission path and the second transmission path. 
     The path setter may set a plurality of first transmission paths and a plurality of second transmission paths, a plurality of first transmission paths and a second transmission path, or a first transmission path and a plurality of second transmission paths. 
     In accordance with another example aspect of the present disclosure, a method of controlling a DSP interface apparatus for setting a data transmission path between at least one of a plurality of hardware devices and a DSP includes setting the data transmission path based on predetermined configuration information; and transmitting data through the data transmission path. 
     The setting of the data transmission path includes connecting at least one among a plurality of operation parts and a memory of the DSP and at least one among the plurality of hardware devices 
     The setting of the data transmission path may include setting the data transmission path using the configuration information, the configuration information including at least one of: information regarding priorities assigned to the plurality of hardware devices, information regarding type of the data transmitted, and information regarding whether data is to be transmitted bidirectionally. 
     The setting of the data transmission path may include setting a first transmission path through which data is transmitted from the DSP to at least one of the plurality of hardware devices, and a second transmission path through which data is transmitted from at least one of the plurality of hardware devices to the DSP. 
     The setting of the data transmission path may include selecting at least one of the plurality of operation parts and the memory of the DSP using a first multiplexer to provide data to the first transmission path; selecting at least one of the plurality of hardware devices using a first demultiplexer to receive data from the first transmission path; selecting at least one of the plurality of hardware devices using a second multiplexer to provide data to the second transmission path; and selecting at least one of the plurality of operation parts and the memory of the DSP using a second demultiplexer to receive data from the second transmission path. 
     The transmitting of the data may include storing at least one of data transmitted through the first transmission path and data transmitted through the second transmission path. 
     The transmitting of the data may include providing the stored data when a size of the stored data reaches a predetermined target level. 
     The transmitting of the data may include transforming at least one of data transmitted through the first transmission path and data transmitted through the second transmission path. 
     The transmitting of the data may include transmitting data independently through the first transmission path and the second transmission path. 
     The setting of the data transmission path may include setting a plurality of first transmission paths and a plurality of second transmission paths, a plurality of first transmission paths and a second transmission path, or a first transmission path and a plurality of second transmission paths. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and/or other aspects, features and attendant advantages of the present disclosure will become apparent and more readily appreciated from the following detailed description, taken in conjunction with the accompanying drawings, in which like reference numerals refer to like elements, and wherein: 
         FIG. 1  is a diagram illustrating an example digital signal processor (DSP) system in a data transmission path, in accordance with an example embodiment; 
         FIG. 2  is a block diagram illustrating a general DSP system; 
         FIG. 3  is a block diagram illustrating an example method of sharing data between a DSP and a hardware device in a general DSP system; 
         FIG. 4  is a block diagram illustrating an example DSP system having a DSP interface apparatus in accordance with an example embodiment; 
         FIG. 5  is a diagram illustrating an example operation of a DSP interface apparatus in accordance with an example embodiment; 
         FIG. 6  is a block diagram illustrating an example path setter of a DSP interface apparatus in accordance with an example embodiment; 
         FIG. 7  is a block diagram illustrating an example data transmission method, performed by a DSP interface apparatus, in accordance with an example embodiment; 
         FIG. 8  is a block diagram illustrating an example data transmission method, performed by a DSP interface apparatus, in accordance with another example embodiment; 
         FIG. 9  is a flowchart illustrating an example method of controlling a DSP interface apparatus in accordance with an example embodiment; and 
         FIG. 10  is a flowchart illustrating an example method of controlling a DSP interface apparatus in accordance with another example embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, a digital signal processor (DSP) interface apparatus and a method of controlling the same in accordance with various example embodiments of the present disclosure will be described in greater detail with reference to the accompanying drawings. In the present disclosure, “transforming” of data may, for example, include handling the data, transforming the data, processing the data, manipulating the data, or the like, but is not limited thereto. 
       FIG. 1  is a diagram illustrating an example DSP system  100  in a data transmission path, in accordance with an example embodiment. Here, a first hardware module, a second hardware module, . . . , an n th  hardware module may refer, for example, to modules embodied similar to a hardware device  300  of  FIG. 2  to transform input data. ‘n’ represents an integer greater than or equal to ‘ 3 ’. An arrow represents a data transmission path. 
     Referring to  FIG. 1 , in an electronic device, a plurality of hardware modules may be located in the data transmission path. Each of the hardware modules may transform data input thereto and output the transformed data. The data output from each of the hardware modules may be input data of a subsequent hardware module. 
     For example, when the electronic device is a television (TV), hardware modules embodied similar to the hardware device  300  (see, e.g.,  FIG. 2 ) may be located in the data transmission path to perform, without limitation, decoding, sharpening, image quality processing, post-processing, or the like. 
     An operation of each of the hardware modules is determined according to hardware design and may thus transform data according to a method determined during the manufacture of the hardware modules. Thus, when only the hardware modules are located in the data transmission path, data may not be transformed in various ways. 
     To this end, the DSP system  100  may be provided in the data transmission path. The DSP system  100  may transform input data in various ways according to a newly updated application. Thus, the DSP system  100  may have a high degree of freedom in transforming data. 
     Referring to  FIG. 1 , when the DSP system  100  is provided between the second hardware module and the fourth hardware module, data output from the second hardware module may be transformed by the DSP system  100  and be then transmitted to the fourth hardware module. In this case, the DSP system  100  may transform the data according to a newly updated application and thus the data may be efficiently transmitted. 
       FIG. 2  is a block diagram illustrating a general DSP system.  FIG. 3  is a block diagram illustrating an example method of sharing data between a DSP and a hardware device in the general DSP system. 
     Referring to  FIG. 2 , a general DSP system  100  may include a DSP  200 , the hardware device  300 , a bus, and a dynamic random access memory (DRAM)  400 . Here, the hardware device  300  may be understood to include the hardware modules of  FIG. 1  and a hardware accelerator which undertakes some of operations performed by the DSP  200 . 
     The DRAM  400  may be connected to the DSP  200  via the bus. An instruction may be stored in the DRAM  400 . The DSP  200  may receive the stored instruction via the bus. The DSP  200  may perform an operation on data according to the instruction. To this end, the DSP  200  may include a bus interface  240  connected to the bus, a memory  230  which stores data, a memory controller  220  which controls the data stored in the memory  230 , and a core  210  which performs an operation on the data. 
     The bus interface  240  may receive an instruction and provide the instruction to the memory controller  220 . The memory controller  220  may read data corresponding to the instruction from the memory  230 , and provide the data to the core  210 . The core  210  may transform the data received from the memory controller  220  by performing an operation on the data. The core  210  may include, for example, a first operation part  210 - 1 , second operation part  210 - 2  to Mth operation part  210 -M. 
     In this case, the hardware device  300  may perform an operation on some of the data to accelerate the performing of the operation by the DSP  200 . To this end, the DSP  200  may share the data with the hardware device  300 . 
     To share the data, the DSP  200  and the hardware device  300  may employ at least one of three methods to be described below. 
     In one of these methods, the core  210  of the DSP  200  and the hardware device  300  may be directly connected to each other. Referring to {circumflex over ( 1 )} of  FIG. 3 , a first hardware device  310  may be directly connected to the core  210  of the DSP  200 . Since data is transmitted directly by the hardware device  300  and the core  210  of the DSP  200 , the speed of transmitting the data is high. However, this method cannot be employed when a series of operations are generally performed by the core  210 . 
     For example, this method cannot be applied when an operation needs to be performed on intermediate data as in a two-dimensional (2D) filter. 
     In another method of these methods, the hardware device  300  may be connected to the memory  230  of the DSP  200 . Referring to {circumflex over ( 2 )} of  FIG. 3 , a second hardware device  320  may be connected to the memory  230  through the memory controller  220  of the DSP  200 . In this case, a data transmission speed may be lower than that in the method in which the hardware device  300  is directly connected to the core  210 . However, in this method, data may be transformed in various ways according to an application by the memory controller  220  storing the data in the memory  230 , providing the stored data to the core  210 , and storing the data transformed by the core  210  in the memory  230  again. 
     In the other method, the hardware device  300  and the DSP  200  are connected to each other via the bus. Referring to {circumflex over ( 3 )} of  FIG. 3 , a third hardware device  330  may be connected to the bus interface  240  of the DSP  200  via the bus. In this method, a data transmission speed is lower than those in the above-described two methods but transforming of data may not be limited. 
     The hardware device  300  may be connected to the DSP  200  by employing an appropriate method among these methods according to data to be transformed. As a result, the connection of the hardware device  300  to the DSP  200  may be understood to mean that the hardware device  300  is connected to the core  210 , that the hardware device  300  is connected to the memory  230 , or that the hardware device  300  is connected to the bus. 
     An interconnection between the hardware device  300  and the DSP  200  is determined during designing of the hardware device  300  and thus the flexibility of data transformation may be low. For example, even if data needs to be transformed quickly using the second hardware device  320  of  FIG. 3 , the second hardware device  320  should first store the data in the memory  230  and then transmit the data to the core  210 . 
     When a new hardware device  300  is added, the entire DSP system  100  should be newly designed. Furthermore, when an application is not determined during designing of the DSP system  100 , an optimum design for data transmission may not be provided. 
     To solve this problem, the DSP system  100  in accordance with an embodiment includes a DSP interface apparatus  600  to variably set an interconnection between the DSP  200  and a plurality of hardware devices  300 . 
       FIG. 4  is a block diagram illustrating an example DSP system having a DSP interface apparatus in accordance with an example embodiment.  FIG. 5  is a block diagram illustrating an example operation of the DSP interface apparatus in accordance with an example embodiment.  FIG. 6  is a block diagram illustrating an example path setter of the DSP interface apparatus in accordance with an example embodiment. 
     Referring to  FIG. 4 , the first to fourth hardware devices  310 ,  320 ,  330 , and  340  are connected to the DSP  200  via the DSP interface apparatus  600 , unlike in  FIG. 2 . As described above, an application appropriate when the hardware device  300  is directly connected to the core  210  and an application appropriate when the hardware device  300  is connected to the memory  230  are different from each other. Thus, the DSP interface apparatus  600  may variably set a data transmission path between the hardware device  300  and the core  210  or a data transmission path between the hardware device  300  and the memory  230  to optimize and/or improve a data transmission speed. 
     To this end, the DSP interface apparatus  600  may include a path setter (e.g., including path setting circuitry)  610  for setting a data transmission path between at least one among a plurality of hardware devices  300  and the DSP  200 , and a controller  620  for controlling the path setter  610  to set a data transmission path according to predetermined configuration information. 
     Referring to  FIG. 5 , a first operation part  210 - 1 , a second operation part  210 - 2 , and a third operation part  210 - 3  of the core  210  of the DSP  200  and the memory  230  of the DSP  200  may be connected to the path setter  610 . The first to fourth hardware devices  310 ,  320 ,  330 , and  340  may be connected to the path setter  610 . The path setter  610 , under the control of the controller  620 , may form a data transmission path by connecting at least one of the first to fourth hardware devices  310  to  340  and at least one of the first to third operation parts  210 - 1  to  210 - 3  and the memory  230  to each other. 
     For example, the path setter  610  may form a first transmission path through which data is transmitted to at least one of the first to fourth hardware devices  310 ,  320 ,  330 , and  340  from at least one of the first to third operation parts  210 - 1  to  210 - 3  and the memory  230 , and a second transmission path through which data is transmitted from at least one of the first to fourth hardware devices  310 ,  320 ,  330 , and  340  to at least one of the first to third operation parts  210 - 1  to  210 - 3  and the memory  230 . 
     To this end, referring to  FIG. 6 , the path setter  610  may include a first multiplexer (MUX)  611   a  provided in the first transmission path to selectively output a piece of data among data received from at least one of the plurality of operation parts and the memory  230  of the DSP  200 , a first demultiplexer (DEMUX)  614   a  provided in the first transmission path to transmit the data output from the first MUX  611   a  to at least one of the plurality of hardware devices  300 , a second MUX  611   b  provided in the second transmission path to selectively output a piece of data among data received from the plurality of hardware devices  300 , and a second DEMUX  614   b  provided in the second transmission path to transmit the data output from the second MUX  611   b  to at least one of the plurality of operation parts and the memory  230  of the DSP  200 . 
     As a result, the path setter  610  may form the first transmission path connecting at least one of the first to third operation parts  210 - 1  to  210 - 3  and the memory  230  selected by the first MUX  611   a  and at least one of the first to fourth hardware devices  310 ,  320 ,  330 , and  340  selected by the first DEMUX  614   a.  Furthermore, the path setter  610  may form the second transmission path connecting at least one of the first to fourth hardware devices  310 ,  320 ,  330 , and  340  selected by the second MUX  611   b  and at least one of the first to third operation parts  210 - 1  to  210 - 3  and the memory  230  selected by the second DEMUX  614   b.    
     The path setter  610  may include a first data transformation part (e.g., including data transformation circuitry)  612   a  for transforming data transmitted through the first transmission path, a first buffer  613   a  for storing the data transmitted through the first transmission path, a second data transformation part (e.g., including data transformation circuitry)  612   b  for transforming data transmitted through the second transmission path, and a second buffer  613   b  for storing the data transmitted through the second transmission path. 
     The first data transformation part  612   a  and the second data transformation part  612   b  may perform simple transformation, e.g., addition, subtraction, multiplication, shifting, etc., on data transmitted through a transmission path. Thus, workload on the DSP  200  and/or the hardware device  300  may be decreased to increase a data transmission speed. 
     The first buffer  613   a  and the second buffer  613   b  may temporarily store data transformed as described above. Thus, data transmission synchronization may be performed and data may be simply transformed. For example, the first buffer  613   a  and the second buffer  613   b  may store a predetermined size of data and provide it through a transmission path to change the size of the data. 
       FIG. 6  illustrates an example case in which the first buffer  613   a  and the first data transformation part  612   a  are provided in the first transmission path set by the path setter  610 , and the second buffer  613   b  and the second data transformation part  612   b  are provided in the second transmission path set by the path setter  610 . However, the path setter  610  may not include any buffer and any data transformation part. For example, the first transmission path may be set by connecting an input terminal of the first DEMUX  614   a  to an output terminal of the first MUX  611   a,  and the second transmission path may be set by connecting an input terminal of the second DEMUX  614   b  to an output terminal of the second MUX  611   b.    
     Although  FIG. 6  illustrates an example case in which the path setter  610  sets one first transmission path and one second transmission path, the path setter  610  may set a plurality of first transmission paths and/or a plurality of second transmission paths. In order to set the plurality of first transmission paths, the path setter  610  may include a plurality of first MUXs  611   a  and a plurality of first DEMUXs  614   a,  and may further include a plurality of first data transformation parts  612   a  and a plurality of first buffers  613   a.  Furthermore, in order to set the plurality of second transmission paths, the path setter  610  may include a plurality of second MUXs  611   b  and a plurality of second DEMUXs  614   b,  and may further include a plurality of second data transformation parts  612   b  and a plurality of second buffers  613   b.    
     Referring back to  FIG. 5 , the controller  620  may include various processing circuitry and control the path setter  610  to set a data transmission path based on predetermined configuration information. In this case, the configuration information may be understood to include various types of information input from the outside to set a data transmission path. For example, the configuration information may include information regarding the complexity of an operation to be performed on data transmitted, information regarding priorities assigned to the plurality of hardware devices  300 , information regarding the type of data transmitted through a transmission path, and information regarding whether data is to be transmitted bidirectionally. 
     The controller  620  may determine whether the hardware device  300  connected to the DSP interface apparatus  600  is to be connected to the plurality of operation parts of the core  210  or the memory  230  based on the information regarding the complexity of the operation which is included in the configuration information. Here, the complexity of the operation may be a value obtained by quantifying a time period needed for the plurality of operation parts of the core  210  to perform the operation on target data. The controller  620  may check the complexity of the operation, and control the path setter  610  to form a transmission path with an optimum operation speed when the operation is performed, according to the complexity of the operation. 
     The controller  620  may control the second MUX  611   b  based on the information regarding the priorities assigned to the plurality of hardware devices  300  which is included in the configuration information. In detail, the controller  620  may control the second MUX  611   b  to first connect the hardware device  300  with high priority to the DSP  200 . Thus, the path setter  610  may sequentially connect the plurality of hardware devices  300  in the data transmission path according to priority. 
     The controller  620  may determine whether the hardware device  300  connected to the DSP interface apparatus  600  is to be connected to the plurality of operation parts of the core  210  or the memory  230  based on the information regarding the type of data included in the configuration information. The controller  620  may check an application to be applied based on the type of the data, and control the path setter  610  to form a transmission path with an optimum transmission speed when an operation is to be performed according to the application. 
     The controller  620  may determine whether data is to be transmitted bidirectionally using both the first transmission path and the second transmission path set by the path setter  610  based on the information regarding whether data is to be transmitted bidirectionally which is included in configuration information. Since the first transmission path and the second transmission path are formed to be independent from each other, the controller  620  may control the path setter  610  to transmit data using one or both of the first and second transmission paths according to the determination as to whether data is to be transmitted bidirectionally. 
     A data transmission method performed by the DSP interface apparatus  600  will be described with reference to  FIGS. 7 and 8  below. 
       FIG. 7  is a diagram illustrating an example data transmission method, performed by a DSP interface apparatus, in accordance with an example embodiment.  FIG. 8  is a diagram illustrating an example data transmission method, performed by a DSP interface apparatus, in accordance with another example embodiment. In  FIGS. 7 and 8 , broken lines may represent paths which data may be transmitted through but are not connected, and continuous lines may represent a path which is connected to transmit data therethrough. 
       FIG. 7  illustrates a case in which the DSP interface apparatus  600  conducts data transmission in one direction. Referring to  FIG. 7 , the DSP interface apparatus  600  may be connected to the first operation part  210 - 1  to form a path Â and may be connected to the second hardware device  320  to form a path {circumflex over (B)} according to configuration information. Thus, the DSP interface apparatus  600  may form a first transmission path through which data transformed by the first operation part  210 - 1  is transmitted to the second hardware device  320  via the paths Â and {circumflex over (B)}. 
     On the other hand, the DSP interface apparatus  600  may transmit data bidirectionally.  FIG. 8  illustrates a case in which the DSP interface apparatus  600  transmits data bidirectionally. Referring to  FIG. 8 , the DSP interface apparatus  600  may be connected to the first hardware device  310  and the second hardware device  320  to form a path {circumflex over ( 1 )} and may be connected to the first operation part  210 - 1  and the second operation part  210 - 2  to form a path {circumflex over ( 2 )} according to the configuration information. Thus, the DSP interface apparatus  600  may form a second transmission path through which data transformed by the first hardware device  310  and the second hardware device  320  is transmitted to the first operation part  210 - 1  and the second operation part  210 - 2  via the paths {circumflex over ( 1 )} and {circumflex over ( 2 )}. 
     At the same time, the DSP interface apparatus  600  may be connected to the first operation part  210 - 1  to form a path {circumflex over ( 3 )} and be connected to the first hardware device  310  to form a path {circumflex over ( 4 )} according to the configuration information. Thus, the DSP interface apparatus  600  may form a first transmission path through which data transformed by the first operation part  210 - 1  is transmitted to the first hardware device  310  via the paths {circumflex over ( 3 )} and {circumflex over ( 4 )}. 
     As described above, the DSP interface apparatus  600  may transmit data by independently using the first transmission path and the second transmission path. 
       FIG. 9  is a flowchart illustrating an example method of controlling a DSP interface apparatus in accordance with an example embodiment.  FIG. 9  relates to a method of transmitting data through a second transmission path. 
     The DSP interface apparatus  600  may check predetermined configuration information ( 800 ). In this case, the configuration information may be understood to include various types of information input from the outside to set a data transmission path. For example, the configuration information may include information regarding priorities assigned to a plurality of hardware devices  300 , the type of data transmitted through a transmission path, and whether data is to be transmitted bidirectionally. 
     The DSP interface apparatus  600  may be connected to the hardware device  300  corresponding to the configuration information ( 810 ). For example, the DSP interface apparatus  600  may be connected to the hardware device  300  by referring to the information regarding the priorities assigned to the plurality of hardware devices  300  which is included in the configuration information. 
     When the DSP interface apparatus  600  is connected to the hardware device  300 , the DSP interface apparatus  600  may check whether data needs to be stored in a buffer according to the configuration information ( 820 ). When data needs to be stored in the buffer, the DSP interface apparatus  600  may store data received from the hardware device  300  connected thereto in the buffer ( 830 ). By using the buffer, data transmission synchronization may be performed and data may be simply transformed. 
     The DSP interface apparatus  600  may be connected to an element of the DSP  200  corresponding to the configuration information after the data is stored in the buffer or when the data need not be stored in the buffer ( 840 ). Here, the element of the DSP  200  may be understood to include at least one among the plurality of operation parts of the core  210  of the DSP  200  and the memory  230  of the DSP  200 . Accordingly, the second transmission path may be formed. 
     The DSP interface apparatus  600  may transmit the data to the element of the DSP  200  connected thereto through the second transmission path ( 850 ). 
       FIG. 10  is a flowchart illustrating an example method of controlling the DSP interface apparatus  600  in accordance with another example embodiment.  FIG. 10  relates to a method of transmitting data through a first transmission path. 
     The DSP interface apparatus  600  may check predetermined configuration information ( 900 ). In this case, the configuration may be understood to include various types of information input from the outside to set a data transmission path. For example, the configuration information may include information regarding priorities assigned to a plurality of hardware devices  300 , the type of data transmitted through a transmission path, and whether data is to be transmitted bidirectionally. 
     The DSP interface apparatus  600  may be connected to an element of the DSP  200  corresponding to the configuration information ( 910 ). Here, the element of the DSP  200  may be understood to include at least one of the plurality of operation parts of the core  210  of the DSP  200  and the memory  230  of the DSP  200 . 
     When the DSP interface apparatus  600  is connected to the element of the DSP  200 , the DSP interface apparatus  600  may check whether data needs to be stored in a buffer according to the configuration information ( 920 ). When data needs to be stored in the buffer, the DSP interface apparatus  600  may store data received from the hardware device  300  connected thereto in the buffer ( 930 ). By using the buffer, data transmission synchronization may be performed and data may be simply transformed. 
     The DSP interface apparatus  600  may be connected to the hardware device  300  corresponding to the configuration information after the data is stored in the buffer or when the data need not be stored in the buffer ( 940 ). In detail, the DSP interface apparatus  600  may be connected to the hardware device  300  by referring to the information regarding the priorities assigned to the plurality of hardware devices  300  which is included in the configuration information. Accordingly, the first transmission path may be formed. 
     The DSP interface apparatus  600  may transmit data to the element of the DSP connected to the hardware device  300  connected thereto through the first transmission path ( 950 ). 
     According to the present disclosure, in a DSP interface apparatus and a method of controlling the same in accordance with an example embodiment, data transmission efficiency may be increased by setting a data transmission path to correspond to the types and number of hardware devices connected to a DSP. 
     Although various example embodiments of the present disclosure have been illustrated and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the appended claims and their equivalents.