JP4847407B2 - Data processing apparatus and data processing method - Google Patents

Description

  The present invention relates to a data processing apparatus and a data processing method, and more particularly, to a data processing apparatus and a data processing method that efficiently perform DMA transfer using a descriptor.

  In recent years, various image processing using a semiconductor memory such as a RAM (Random Access Memory) has been performed in an image processing apparatus such as a copying apparatus, a printer apparatus, a facsimile apparatus, or a composite apparatus in accordance with the combination and digitization. It is becoming. As a technique for transferring data on the memory at high speed, there is DMA (Direct Memory Access). In DMA, generally, a CPU (Central Processing Unit) is specified by specifying a memory address and a transfer amount. However, when data is scattered on the memory, the data is continuously transferred by connecting the data scattered on the memory using the descriptor method.

  In the descriptor method, a DMA controller (hereinafter referred to as DMAC) reads an identifier on a memory called a descriptor, performs data transfer based on a start address and a transfer amount indicated in the descriptor, and has scattered data. When a series of operations is completed, the pointer of the next descriptor is accessed and the descriptor information is read from the descriptor of the pointer. The operation of acquiring and transferring again is repeated.

  When various image processing is performed on data by a module as in an image processing apparatus or the like, a DMAC is mounted on the module and parameters (setting values) of the data processing stored in the memory by the CPU are set. When the descriptor is read from the memory and set in the module register, and then the DMAC reads the data on the memory, the module performs image processing on the image data based on the previously set parameters, The DMAC transfers the image data after the image processing to the memory.

  As described above, in the descriptor-based DMA, since the CPU issues a command to the DMAC for each transfer of one block, if the entire data amount is large and the size of one block is small, the number of times the CPU is involved in the DMA is also small. The load on the CPU increases.

  Conventionally, a technique has been proposed in which a CPU for issuing commands for data transfer is eliminated by providing a DMAC for data transfer and a DMAC for issuing commands, thereby reducing the load on the CPU issuing commands. Patent Document 1).

JP 2001-282705 A

  However, in the above prior art, by providing a DMAC for data transfer and a DMAC for command issue, the load on the CPU command issue is reduced, so the descriptor information is fixed and the descriptor information is fixed. Every time the format changes, hardware modifications are required. As a result, there is a need to improve the data transfer efficiently.

  Accordingly, an object of the present invention is to provide a data processing apparatus and a data processing method capable of efficiently performing data transfer while reducing the load on the CPU.

The data processing apparatus according to the first aspect of the present invention is equipped with a DMA controller that DMA-transfers setting information and data based on descriptor information stored on the storage means, and performs a plurality of predetermined data processing on the data. And setting the descriptor information in the storage means and controlling the operation to the storage means by the DMA controller and the operation of the module, and setting the setting value and the setting value to be set in the module A data processing apparatus comprising: a control unit that stores the module address of the module to be set as the descriptor information in the storage unit; and a setting information reading unit that reads the descriptor information from the storage unit and passes it to each module. Each module receives the setting information read from the setting information reading means. Checking means for checking whether or not the scripter information is descriptor information to be set in the self based on the module address, and if the descriptor information is to be set in the own module, check means for setting the descriptor information in the own module. And the control means adds to the descriptor information all descriptor size information indicating the total data size of the descriptor and stores it in the storage means, and the setting information read means reads the descriptor read from the storage means Data size detecting means for detecting whether the data size of the information is the data size indicated by the all descriptor size information is provided, and the all descriptor size information indicates based on the detection result of the data size detecting means. Data size description By reading the data information from the storage means, it has achieved the above objects.

In the case of claim 1 , for example, as described in claim 2 , the setting information reading unit includes a start notification unit that outputs a start signal to all the modules, and the data size detecting unit When the reading of the descriptor information having the data size indicated by the descriptor size information is detected, the activation notification means may output the activation signal to all the modules.

Further, in the case of claim 1 or 2 , for example, as described in claim 3 , when the module address for setting the setting value is continuous, the control means, for each continuous module address, The module address continuous size and the continuous setting value are stored in the storage means as the descriptor information, and the setting information reading means includes an address calculation means for calculating an address of the descriptor information read from the storage means, The address calculation means may sequentially calculate the module address of each successive set value from the first module address of the set value, and pass the module address of the calculation result to each module.

Further, in the case of claims 1 to 3 , for example, as described in claim 4 , the control unit divides the descriptor information into predetermined blocks and assigns different descriptor addresses on different storage units. And storing the descriptor information of the next block by adding the descriptor address of the descriptor information of the next block, and the setting information reading means stores the descriptor information of the block of the next descriptor. You may read sequentially based on the address.

Further, in the case of claims 1 to 4 , for example, as set forth in claim 5 , the setting information reading means includes individual activation notification means for individually outputting activation signals to the modules, and the control The means additionally stores module information for specifying a module to which the descriptor information is set as the descriptor information, and the setting information reading means, when the reading of the descriptor information is completed, the individual activation notifying means The activation signal may be output to the setting destination module based on the module information.

Further, in the case of claims 1 to 5 , for example, as described in claim 6 , each module outputs a data processing end signal to the setting information reading means when the data processing is completed. An activation module for determining that the activation of all the modules is completed when the setting information reading unit receives the data processing completion signal from the data processing completion notification unit of all activated modules. End determination means may be provided.

The data processing method according to claim 7 , wherein a setting value to be set in a plurality of modules mounted with a DMA controller and performing predetermined data processing on data and a module address of the module to set the setting value are stored as descriptor information. Descriptor setting processing step to be stored in the means, descriptor acquisition processing step to read the descriptor information from the storage means and pass to each module, and whether each module is the descriptor information to which the passed descriptor information is set the whether to check based on the module address, if it is the descriptor information to be set to itself possess the descriptor information determination processing step of setting captures the descriptor information, in the descriptor setting processing step, the de All descriptor size information indicating all data sizes of the descriptor is added to the scripter information and stored in the storage means. In the descriptor acquisition processing step, the setting information reading means reads the descriptor information read from the storage means. Is read out from the storage means, based on the detection result, whether the data size is the data size indicated by the total descriptor size information. The above-mentioned purpose is achieved.

  According to the present invention, the control means stores the setting values set in a plurality of modules that are equipped with the DMA controller and perform predetermined data processing on the data and the module addresses of the modules that set the setting values as descriptor information. And the setting information reading means reads the descriptor information from the storage means and passes it to each module, and the checking means of each module determines whether or not the passed descriptor information is the descriptor information set to itself. If it is descriptor information to be set in its own module based on the module address, since the descriptor information is set in its own module, the descriptor format can be freely arranged. The control means sets the set value to each module By simply storing the setting value as descriptor information in the storage means, the setting value is set in each module, which was involved in the DMA data transfer in both the settings for data transfer based on the setting value, Data transfer based on the set value can be performed, the load on the control means can be reduced, and data transfer can be performed efficiently.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, since the Example described below is a suitable Example of this invention, various technically preferable restrictions are attached | subjected, However, The scope of the present invention limits this invention especially in the following description. As long as there is no description of the effect, it is not restricted to these aspects.

  1 to 6 are diagrams showing a first embodiment of the data processing apparatus and data processing method of the present invention, and FIG. 1 applies the first embodiment of the data processing apparatus and data processing method of the present invention. 1 is a block diagram of a main part of an image processing apparatus 1 such as a copying apparatus, a composite apparatus, or a printer apparatus.

  In FIG. 1, an image processing apparatus 1 as a data processing apparatus includes a CPU 2, a data processing unit 3, a memory 4, and the like. The data processing unit 3 includes a rotator 11, a magnification changer 12, and an image processing module. A setting information reading unit 13, a CPU I / F 14, a memory I / F 15 and the like are provided.

  In the image processing apparatus 1, the data processing unit 3 reads image data on the memory 4 in accordance with the instruction information of the CPU 2, performs image processing on the read image data, and writes it back to the memory 4. .

  The CPU I / F 14 is an interface with the CPU 2, and the memory I / F 15 is an interface with the memory 4.

  The memory 4 is a storage unit that uses a RAM (Random Access Memory), a hard disk, or the like, and in which image data, descriptors, and the like are written and read.

  The CPU 2 writes register information (setting information) to be set in the data processing unit 3 and data to be input to the data processing unit 3 in the memory 4, and also stores the setting information reading unit 13 in the data processing unit 3 in the memory 4. Set the reading start address and give instructions to start. That is, the CPU 2 sets a set value (register set value) for the rotator 11 and the variable power multiplier 12 which are a plurality of modules, and a register address (module address) of the rotator 11 and the variable power generator 12 for setting the set value. Functions as control means for performing descriptor setting processing for storing the information in the memory 4 as descriptor information.

  The setting information reading unit 13 reads descriptor information including a register address (module address) and a register setting value from the reading start address of the memory 4 set by the CPU 2, and the register processing unit 3 sets the register setting value. It is a register address of the rotator 11 and the variable magnification device 12 which are the modules in the inside. The setting information reading unit 13 sends the read register address and register information (descriptor information) of the register setting value to all the image processing modules in the data processing unit 3, that is, the rotator 11 and the magnification changer 12. Execute descriptor acquisition processing.

  The rotator 11 is an image processing module that performs image rotation processing on image data read from the memory 4, and includes a data DMAC (DATA DMAC) 11a, an address checker 11b, and the like. The magnification changer 12 is an image processing module that performs image magnification processing on image data read from the memory 4, and includes a data DMAC 12a, an address checker 12b, and the like.

  The data DMACs 11a and 12a control data transfer without going through the CPU 2, and transfer data to and from the memory 4 via the memory I / F 15 based on descriptor information on the memory 4.

  The address checkers 11b and 12b check whether or not the register address of the register information received from the setting information reading unit 13 is an address for setting the register information to the self, and the register address of the received register information is rotated by itself. When it is determined that the address is to be set in the converter 11 and the variable magnification unit 12, the received register setting value is held in an internal register, and the address checkers 11b and 12b receive the register address of the received register information. If it is determined that the address is not to be set, descriptor information determination processing for discarding the register information is performed.

  When the rotator 11 and the magnification changer 12 hold the register setting value received from the setting information reading unit 13 in the internal register, the data DMACs 11a and 12a receive image processing parameters and image data from the memory 4 based on the register setting value. Is subjected to image rotation processing and image scaling processing on the image data based on the image processing parameters, and written to the address on the memory 4 specified by the descriptor information.

  Next, the operation of this embodiment will be described. The image processing apparatus 1 according to the present embodiment freely arranges descriptor formats to reduce the involvement of the CPU 2 for data transfer by DMA.

  That is, as shown in FIG. 2, the image processing apparatus 1 writes the register information (denoted as setting information in FIG. 2) that the CPU 2 sets in the data processing unit 2 on the memory 4 (step S101). ). This register information is descriptor information indicating the memory address on the memory 4 in which data such as image data input to the data processing unit 2, processing parameters applied to the image data, and data such as image data are stored, and the transfer amount.

  Next, the CPU 2 sets the reading start address of the register information on the memory 4 to the setting information reading unit 13 and instructs the start of activation (step S102).

  The setting information reading unit 13 reads the register information to be taken into the data processing unit 3 from the reading start address set by the CPU 2 on the memory 4 (step S103), and internally stores the register address and the register setting value read from the memory 4 The image data is sent to the rotator 11 and the variable magnification device 12 which are all the image processing modules (step S104).

  When the address checkers 11b and 12b of the rotator 11 and the variable magnification unit 12 receive the register information (descriptor information), which is a register address and a register setting value, from the setting information reading unit 13, the register address of the received register information is self-registered. Is determined (step S105). If it is determined that the register address of the received register information is an address to be set to itself, it is stored in the register inside the rotator 11 or the variable magnification unit 12. The register setting value of the received register information is held (step S106). If the address checkers 11b and 12b determine that the register address of the received register information is not an address to be set, the address checkers 11b and 12b discard the register information (step S107).

  Then, in the rotator 11 or the variable power multiplier 12 that has set the register information in the internal register, the data DMACs 11a and 12a access the memory 4 based on the register setting value that is the setting information, and transfer data from the memory 4 If the data is a processing parameter for image processing, the read / rotator 11 or the variable magnification unit 12 sets the processing parameter in an internal register. If the data is image data, the data is already set in the image data. The image DMAC 11a, 12a writes the processed image data back to the memory 4 by performing image rotation processing and image scaling processing based on the processing parameters.

  As described above, the image processing apparatus 1 according to the present exemplary embodiment includes the rotator 11 and the magnification changer 12 that are a plurality of image processing modules, the register setting value to be set to the register setting value, the rotator 11 to set the register setting value, and the magnification change. The CPU 2 stores the module address of the device 12 as descriptor information in the memory 4, and the setting information reading unit 13 reads the descriptor information from the memory 4, and passes it to the rotator 11 and the power multiplier 12. If the address checkers 11b and 12b of the magnification changer 12 check whether or not the passed descriptor information is descriptor information to be set to the self, based on the module address, The descriptor information is set in its own register.

  Therefore, the descriptor format can be freely arranged. Conventionally, the setting of the register setting values to the rotator 11 and the magnification changer 12 which are each image processing module and the setting for transferring the data based on the register setting values In both cases, the CPU is involved in the DMA data transfer. By simply storing the register setting value in the memory 4 as descriptor information, the register setting value is set in the rotator 11 and the variable magnification unit 12, and the register is set. Data transfer based on the set value can be performed, the load on the CPU 2 can be reduced, and data transfer can be performed efficiently.

  In other words, the image processing apparatus 1 according to the present embodiment configures the descriptor format with a register address that is a module address and a register setting value, and the address checkers 11b and 12b of the rotator 11 and the variable magnification unit 12 are based on the register address. Since the register data is controlled by checking whether the register data is addressed to itself, the descriptor format can be freely arranged.

  Normally, the descriptor has a format configuration consisting only of the register setting value (register value) consisting of the memory address and the transfer amount. However, in the image processing apparatus 1 of this embodiment, the CPU 2 writes the data on the memory 4. The descriptor format is composed of a register address and a register set value (memory address and transfer amount) which are register addresses of the rotator 11 and the magnification changer 12 which are image processing modules of the data processing unit 3.

  Then, the address checker 11b of the rotator 11 and the address checker 12b of the magnification changer 12 determine whether the register setting value received from the setting information reading unit 13 is addressed to itself based on the register address.

  The descriptor used in this embodiment is not limited to the above format configuration. For example, as shown in FIG. 3, all descriptor sizes (all data sizes) are incorporated at the beginning of the descriptor, and then the register address and register value are included. They may be stored in the order of (register set value). That is, the descriptor configuration may be stored in the order of “all descriptor sizes, register address, register value... Register address, register value”.

  When the entire descriptor size is incorporated in the descriptor as described above, the setting information reading unit 13 is provided with the data size detection unit 21 (see FIG. 4). Data size), the data size detector 21 reads the register address and the register value (register set value), which are descriptor information after the entire descriptor size, while calculating the total descriptor size, The register address and the data value are supplied to (rotator 11 and variable magnification unit 12). Hereinafter, the setting information reading unit 13 calculates the data size read by the data size detection unit 21 and reads the register address and the register value from the memory 4 until the entire descriptor size (all data size) is reached. Perform processing to flow to the module.

  In this way, the number of register settings that can be set as descriptor information can be freely changed, and the degree of freedom can be further improved.

  In this case, as shown in FIG. 4, the setting information reading unit 13 is provided with the data size detection unit 21 and the activation notification unit 22, and when the data size detection unit 21 calculates the total descriptor size, that is, the total descriptor size. When the descriptor information is read, the data size detection unit 21 outputs an end signal to the activation notification unit 22, and the activation notification unit 22 applies to all image processing modules, that is, the rotator 11 and the magnification changer 12. On the other hand, a start signal (start signal) may be output so that each image processing module, that is, the rotator 11 and the magnification changer 12 execute the above processing.

  In this way, the rotator 11 and the magnification changer 12 can be automatically activated, and it is not necessary for the CPU 2 to bother to activate the rotator 11 and the magnification changer 12 that are image processing modules. The load can be further reduced.

  Further, the descriptor used in the present embodiment is not limited to the above format configuration. For example, when the register address is arranged in the continuous area, the register address continuous size is set in the descriptor information as shown in FIG. It may be set.

  In this case, the setting information reading unit 13 is provided with the data size detection unit 21 and the address calculation unit, and the setting information reading unit 13 first acquires all descriptor sizes (all data sizes) of the memory 4 to detect the data size. While calculating the total descriptor size, the unit 21 next reads the register address continuous size, and further reads the register address and register value (register set value), which are descriptor information after the total descriptor size, to calculate the address. The unit calculates from the register address read first, and sends the register address and the data value to all the image processing modules (rotator 11 and variable magnification unit 12). The setting information reading unit 13 reads the register address continuous size calculated by the address calculation unit, and the data size detection unit 21 reads the next register address continuous size and the following register address and register value. The processing is performed until the data size of the data is calculated until the entire descriptor size (total data size) is reached, and the processing is sequentially performed through all the image processing modules.

  In this way, when register addresses are set in a continuous space, the subsequent addresses can be automatically calculated only by setting the first register address, and the memory space to be secured can be reduced.

  Furthermore, the descriptor used in the present embodiment is not limited to the format configuration described above. For example, as shown in FIG. 6, the descriptor information may be divided into a plurality of pieces and arranged on the memory 4.

  In this case, as described above, when the setting information reading unit 13 is activated, the setting information reading unit 13 first reads the descriptor information (setting information) from the address where the descriptor information is stored. Get the size. When the data size detection unit 21 reads the register address and register value as descriptor information from the memory 4 until the total data size is reached, the next descriptor address as the descriptor information set last is determined.

  If the next descriptor address is not “0”, the setting information reading unit 13 determines that the data value is an address at which the next setting information (descriptor information) is stored, and first sets all data as described above. The operation of acquiring the data size and reading the descriptor information is repeated as described above.

  When the next descriptor address is “0”, the setting information reading unit 13 determines that the setting information is the last setting information, and completes the reading operation.

  In this way, when it is difficult to secure a continuous memory space, such as when the setting information is huge, the descriptor information can be divided into a plurality of pieces, and the register setting value can be divided into a plurality of pieces of descriptor information. The degree of freedom can be further improved.

  7 and 8 are diagrams showing a second embodiment of the data processing apparatus and data processing method of the present invention, and FIG. 7 applies the second embodiment of the data processing apparatus and data processing method of the present invention. It is a principal block block diagram of the data processing part of an image processing apparatus.

  The present embodiment is applied to an image processing apparatus similar to the image processing apparatus 1 of the first embodiment, and the description of the present embodiment is the same as the image processing apparatus 1 of the first embodiment. The same reference numerals are assigned to the components, and detailed description thereof is omitted, and portions not shown will be described using the symbols used in the first embodiment as they are as necessary.

  In FIG. 7, the data processing unit 3 of the image processing apparatus 1 includes a rotator 11, a magnification changer 12, a setting information reading unit 13, and the like as an image processing module, and the setting information reading unit 13 performs module activation determination. A rotator activation notification unit 32 and a magnification changer activation notification unit 33 which are activation notification units for each of the image processing modules 31 and the image processing modules.

  The descriptor information set in the memory 4 by the CPU 2 has a descriptor format as shown in FIG. 8, and includes all data sizes (all descriptor sizes), register addresses, register values (register set values),. A register address and a register value are set, and finally, a module number data size and a rotator number and a variable number as a module number are set.

  In the image processing apparatus 1 of the present embodiment, when the CPU 2 writes the descriptor information having the above configuration in the memory 4 and notifies the setting information reading unit 13 of the reading start address, the setting information reading unit 13 starts the reading of the memory 4. Read all the register address and register setting value (register value) of descriptor information from the address, then read the module number data size set in the descriptor, and the module number corresponding to the module number data size, that is, the rotator Read the number and the multiplier number.

  When the module information reading unit 13 reads the module number (rotator number and variable number), the module activation determination unit 31 and the rotary unit activation notification unit 32 and the variable magnification unit activation notification which are necessary module activation notification units. The rotator activation notifying unit 32 and the magnification changer activation notifying unit 33 that have issued a notification request to the unit 33 and received the notification request are sent to the rotator 11 and the magnification changer 12 that are corresponding image processing modules. Start signal.

  When the rotator 11 and the magnification changer 12 receive the activation signal from the rotator activation notification unit 32 and the magnification changer activation notification unit 33, the rotator 11 and the magnification changer 12 receive the setting signal from the setting information reading unit 13 and based on the register address and the register setting value, Setting processing is performed, and necessary image data and parameters are read from the memory 4.

  As described above, the image processing apparatus 1 according to the present exemplary embodiment can specify the modules to be activated and can control various combinations of modules with the descriptor setting information, thereby further improving the degree of freedom.

  FIG. 9 is a block diagram of the main part of the data processing unit of the image processing apparatus to which the third embodiment of the data processing apparatus and data processing method of the present invention is applied.

  The present embodiment is applied to an image processing apparatus similar to the image processing apparatus 1 of the first embodiment, and the description of the present embodiment is the same as the image processing apparatus 1 of the first embodiment. The same reference numerals are assigned to the components, and detailed description thereof is omitted, and portions not shown will be described using the symbols used in the first embodiment as they are as necessary.

  In FIG. 9, the data processing unit 3 of the image processing apparatus 1 includes a rotator 11, a magnification changer 12, a setting information reading unit 13, and the like as image processing modules.

  Each of the rotator 11 and the magnification changer 12 includes data processing end notification units 11c and 12c that output an end signal to the setting information reading unit 13 to notify the end of data processing. The setting information reading unit 13 includes: The end of data processing in each image processing module is determined based on end signals from the data processing end notification units 11c and 12c of the rotator 11 and the variable magnification device 12 that are image processing modules.

  The image processing apparatus 1 according to the present embodiment performs data processing such as data transfer from the memory 4 based on descriptor information in the rotator 11 and the variable magnification unit 12 that are image processing modules and image processing for data read from the memory 4. When the data processing ends, the data processing end notification units 11c and 12c output an end signal to the setting information reading unit 13 to notify the end of data processing.

  The setting information reading unit 13 receives the end signal from the rotator 11 and the power multiplier 12 by the activation module end determination unit 41, and the activation module end determination unit 41 is a rotator that is all the activated image processing modules. 11. It is determined that the processing of the data processing unit 3 has been completed when the end signal is received from the power multiplier 12.

  By doing this, the setting information reading unit 13 centrally manages the completion of all operations of the data processing unit 3 in one place, and the CPU 2 determines the end of the data processing unit 3 by the rotator 11 that is each image processing module, the magnification change. The control can be performed only by the notification from the setting information reading unit 13 instead of being notified from the device 12, and the control can be simplified and the load on the CPU 2 can be further reduced.

  The invention made by the present inventor has been specifically described based on the preferred embodiments. However, the present invention is not limited to the above, and various modifications can be made without departing from the scope of the invention. Needless to say.

  The present invention can be applied to a data processing apparatus and a data processing method for transferring data by DMA such as a printer apparatus or a composite apparatus.

1 is a block diagram of a main part of an image processing apparatus to which a first embodiment of the present invention is applied. 3 is a flowchart showing data transfer control processing by the image processing apparatus of FIG. 1. FIG. 2 is a diagram illustrating an example of a descriptor in which all data sizes, register addresses, and register values used in the image processing apparatus of FIG. 1 are set. The block block diagram of the setting information reading part in the case of having the data size detection part and starting notification part of FIG. FIG. 2 is a diagram illustrating an example of a descriptor in which all data sizes, register address continuous sizes, register addresses, and register values are used in the image processing apparatus of FIG. 1. FIG. 2 is a diagram illustrating an example of a descriptor in which all data sizes, register addresses, register values, and next descriptor addresses are used in the image processing apparatus of FIG. 1. The principal part block block diagram of the data processing part of the image processing apparatus to which 2nd Example of this invention is applied. FIG. 8 is a diagram illustrating an example of a descriptor in which all data sizes, register addresses, register values, module number data sizes, rotator numbers, and magnification numbers are used in the image processing apparatus of FIG. 7. FIG. 9 is a block diagram of the main part of a data processing unit of an image processing apparatus to which a third embodiment of the present invention is applied.

Explanation of symbols

1 Image processing device 2 CPU
3 Data processor 4 Memory 11 Rotator 11a Data DMAC
11b Address checker 12 Multiplier 12a Data DMAC
12b Address checker 13 Setting information reading unit 14 CPU I / F
15 Memory I / F
21 Data size detection unit 22 Start notification unit 31 Module start determination unit 32 Rotator start notification unit 33 Zoomer start notification unit 41 Start module end determination unit 11c, 12c Data processing end notification unit

Claims (7)

A plurality of modules that are equipped with a DMA controller for performing DMA transfer of setting information and data based on descriptor information stored on the storage means, and that perform predetermined data processing on the data, and the descriptor information to the storage means To control the operation to the storage means by the DMA controller and the operation of the module, and the setting value to be set for the module and the module address of the module to set the setting value as the descriptor information A data processing apparatus comprising: a control unit that stores data in the storage unit; and a setting information reading unit that reads the descriptor information from the storage unit and passes the descriptor information to the modules. The descriptor information passed from the means is set to self. Whether the descriptor information checked based on the module address, if it is the descriptor information to be set in its own module, comprising a check means for setting the descriptor information in its own module,
The control means adds all descriptor size information indicating the total data size of the descriptor to the descriptor information and stores it in the storage means, and the setting information reading means stores the descriptor information read from the storage means. Data size detection means for detecting whether the data size is the data size indicated by the total descriptor size information, and based on the detection result of the data size detection means, the data size indicated by the total descriptor size information The data processing apparatus is characterized in that the descriptor information is read from the storage means . The setting information reading unit includes a start notification unit that outputs a start signal to all the modules, and when the data size detection unit detects reading of the descriptor information of the data size indicated by the all descriptor size information, 2. The data processing apparatus according to claim 1, wherein the activation notification means outputs the activation signal to all the modules . When the module addresses for setting the setting values are continuous, the control means stores the module address continuous size and the continuous setting values as the descriptor information in the storage means for each continuous module address. The setting information reading means includes address calculating means for calculating the address of the descriptor information read from the storage means, and the address calculating means sets the module address of each successive setting value at the head of the setting value. 3. The data processing apparatus according to claim 1 , wherein calculation is performed sequentially from module addresses, and module addresses of the calculation results are passed to each module . The control means divides the descriptor information into predetermined blocks and stores them in different descriptor addresses on the different storage means, and the descriptor information of the next block in the descriptor information for each block. 4. An address is added and stored, and the setting information reading unit sequentially reads descriptor information for each block based on the next descriptor address. Data processing equipment. The setting information reading unit includes an individual activation notifying unit that individually outputs an activation signal to each module, and the control unit adds module information that identifies a module to which the descriptor information is set as the descriptor information. The setting information reading means outputs the activation signal to the setting destination module based on the module information when the setting information reading means completes reading of the descriptor information. The data processing apparatus according to any one of claims 1 to 4. Each of the modules includes a data processing end notifying unit that outputs a data processing end signal to the setting information reading unit when the data processing is completed, and the setting information reading unit includes the data processing unit for all the activated modules. 6. The apparatus according to claim 1, further comprising start module end determination means for determining that start of all the modules has ended when the data processing end signal is received from the end notification means. The data processing apparatus described. A descriptor setting processing step for storing a setting value to be set in a plurality of modules that are equipped with a DMA controller and perform predetermined data processing on data, and a module address of the module to set the setting value in a storage unit as descriptor information; A descriptor acquisition processing step of reading the descriptor information from the storage means and passing it to each module, and checking whether each module is based on the module address whether the passed descriptor information is the descriptor information set to itself If the descriptor information is to be set in itself, the descriptor information determination processing step for fetching and setting the descriptor information is included.
In the descriptor setting processing step, all descriptor size information indicating all data sizes of the descriptor is added to the descriptor information and stored in the storage means. In the descriptor acquisition processing step, the setting information reading means includes the descriptor information It is detected whether the data size of the descriptor information read from the storage means is the data size indicated by the total descriptor size information, and based on the detection result, the descriptor of the data size indicated by the total descriptor size information A data processing method , wherein information is read from the storage means .

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