JP3145779B2 - Output device for LSI design data sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for outputting a data sheet for LSI design, and more particularly to an apparatus for outputting a data sheet for each component used in ASIC design.

[0002]

2. Description of the Related Art In general, an LSI design process is performed by sequentially passing through a functional design stage, a logic design stage, a circuit design stage, and a layout design stage. And 1
In one design stage, design processing is performed using design component data created in the previous design stage. Normally,
In order to support the design at each stage, separate CAD tools are prepared, and the design is performed by these CAD tools. For this reason, the design component data of the LSI is separately managed for each CAD tool.

[0003] In recent years, the use of LSIs has been expanding more and more, and so-called ASICs (application-specific integrated circuits) have been developed.
Is increasing year by year. In the ASIC, it is necessary to design a relatively large-scale circuit in a short time according to the requirements of each user. For this reason, a semiconductor maker provides a user with a large number of LSI design component data for each CAD tool as a library, and the user combines desired design component data in the provided library to create a desired LSI design. A system to do this is adopted.
In other words, a semiconductor maker prepares a large number of LSI design parts data as individual parts in advance, and the user can use the necessary parts from among them to obtain a desired LSI.
The work of assembling I will be performed.

[0004] When a user performs such an ASIC design, information on individual parts is required. Therefore,
Semiconductor manufacturers provide users with various types of information on individual components in the form of data sheets or data books that combine the data sheets. The user
While referring to this data sheet, the functions of individual parts,
By recognizing the characteristics and structure, a desired ASIC design is performed.

[0005]

The number of parts for designing an ASIC is very large, and the amount of information in a data book provided to a user is enormous. Therefore, the user has to perform a complicated operation to search for information on the parts he or she needs from this huge data book. Moreover, there is no guarantee that the information required by the user is always posted in the data book. For example, circuit characteristic values (setup time, hold time, etc.) described in the data book
Is generally a safe value for operating the part. Therefore, if the user needs more strict characteristic values to perform the ASIC design, such information cannot be obtained from the data book.

[0006] Further, the LSI manufacturing process has made technological progress year by year, and higher performance and smaller size of integrated circuits have been achieved. Each time such high performance and miniaturization are achieved, it is necessary to update individual components for assembling the ASIC. The semiconductor manufacturer must prepare a new data book and distribute it to users every time the component data is updated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an output device for an LSI design data sheet for easily providing a user with information required by a user for individual components used in the LSI design.

[0008]

Means for Solving the Problems (1) A first invention of the present application is a device for outputting a data sheet for various parts used in LSI design, a storage means for holding part data for each part as a database, Element information extracting means for extracting a specific element included in the component data from desired component data, and creating the sheet information by editing the element data extracted by the element extracting means based on predetermined information A sheet information creating unit, a sheet output unit that outputs a data sheet based on the created sheet information, and element specifying information for specifying an element to be extracted to the element extracting unit. The element editing information for specifying the editing process to be performed on the sheet information creation means and the format for the sheet information to be created are specified. Formatting information to define
And an input means for inputting

(2) The second invention of the present application is a data sheet output device according to the first invention, in which elements inherent in desired part data or elements input from the outside are combined to newly generate the data. A component synthesizing means for synthesizing and adding the various component data to a database in the storage means, a process data storing means for storing a process of the extraction processing performed by the element extracting means and a synthesizing process performed by the component synthesizing means, Is further provided.

(3) The third invention of the present application is the data sheet output device according to the second invention described above, wherein another element is generated by converting a representation of an element included in desired part data. An expression conversion means is further provided, and a process of the expression conversion processing by the expression conversion means is stored in the process data storage means.

[0011]

The output device for an LSI design data sheet according to the present invention has LSI design component data as a database. When the user inputs information for specifying necessary data from the input device, only necessary elements of the user are extracted from the database by the element extracting means.
Moreover, the extracted element data is edited by the sheet information creating means, and a data sheet in which the user's necessary data is posted according to the user's desired format setting can be obtained.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS §1 Overall Configuration of Apparatus Hereinafter, the present invention will be described based on an embodiment illustrating the present invention. FIG. 1 is a block diagram showing a basic configuration of an LSI design data sheet output device according to an embodiment of the present invention. This apparatus includes a storage unit 10, an element extraction unit 20, a component synthesizing unit 30, an expression conversion unit 40, an input unit 50, a sheet information creation unit 60, and a sheet output unit 70. Each of these components is specifically realized by a computer and its software, and its peripheral devices. This device includes a device for generating and managing LSI design component data. That is, LS
The I-designed part data is stored as a database in a designed-parts data area in the storage means 10. The apparatus generates new LSI-designed part data based on this database, or updates the LSI-designed part data based on the version. It has the function of up.

§2 LSI Design Parts Data Here, before describing the operation of this apparatus, a brief description of what specific LSI design parts data prepared as a database is will be given. FIG. 2 is a diagram showing each stage of a general LSI design work. First, in a function design stage 1, a design is performed in which an LSI to be designed is represented by a combination of several function blocks. In the subsequent logic design stage 2, design is performed in which each functional block is represented by a combination of several logic elements (AND gate, OR gate, inverter, etc.). Further, in the circuit design stage 3, design is performed in which each logic element is represented by a circuit diagram in which a transistor element, a resistance element, a capacitance element, and the like are combined. Then, in the layout design stage 4, a mask pattern corresponding to each element in the circuit diagram is designed. Generally, the design work in each of these stages is performed by using a dedicated CAD tool. This each C
The AD tool has component data necessary for each design work. That is, functional design component data is prepared in the function design stage 1, logical design component data is prepared in the logic design stage 2, circuit design component data is prepared in the circuit design stage 3, and layout design component data is prepared in the layout design stage 4. Is prepared.

FIG. 3 shows some specific examples of these design part data. The component data A is component data used in the logic design stage 2, and in this example, an element formed by connecting three inverter elements I1, I2, and I3 in series forms one component. Actually, there are many components including only one inverter, components including other logic elements such as an AND gate and an OR gate, and components combining these components. Further, even if the components are formed by combining the same logic elements, they are different components having different operation characteristics and sizes. For example, component data A is functionally formed by connecting three inverter elements in series, but the operation characteristics of the component (for example, the delay from when an input signal is applied to when an output signal is obtained) are obtained. The time) and the size (the area occupied on the semiconductor chip) are also determined in advance. Therefore, even a component having the same function as “three inverter elements are connected in series” is a component separate from component data A if the delay time and the occupied area are different. As described above, the “parts data” in the present invention refers to functional information (information indicating that three inverter elements I1, I2, and I3 are connected in series in the part data A) and characteristic information for a target part. This means data including information (delay time and other electrical characteristic information) and structural information (information such as size, shape, and positions of input / output terminals).

The component data B is component data used in the circuit design stage 3, and in this example, two transistors T
An element formed by connecting T1 and T2 in parallel constitutes one component. As components used in the circuit design stage 3, many components including not only such transistors but also resistors and capacitors are prepared. After all, this part data B
In addition to the functional information that the two transistors T1 and T2 are connected in parallel, the characteristic information and the structural information of each transistor are included. On the other hand, the component data C is
This is component data used in the layout design stage 4. In this example, a mask pattern in which the diffusion layer F1 and the polysilicon layer F2 intersect constitutes one component. Again, this component data C also includes the diffusion layer F1 and the polysilicon layer F2.
In addition to the functional information that the mask pattern intersects the characteristic information, characteristic information (such as conductivity in each layer) and structural information (such as the area of each layer) are included.

§3 In the ASIC for interconnecting LSI design component data, it is necessary to design a relatively large-scale circuit in a short time according to the requirements of individual users. It is necessary to provide the user with the LSI design part data as a library. That is, it is necessary to prepare an enormous number of component data for all stages 1 to 4 shown in FIG. In addition, this enormous number of component data have some relation to each other, and one component data is generally generated by synthesizing an element inherent in another component data and an element provided from the outside. It is.

The relationship between the component data will be briefly described with reference to FIG. As described above, various information is inherent in one component data, and only certain information can be extracted as one element. In LSI design part data, generally, functional elements, characteristic elements,
Extraction of structural elements is possible. For example, consider layout design component data D as shown in FIG. The layout design component data expresses a part of the LSI as a set of figures, as shown in component data C of FIG. In the example shown in FIG. 4, from the layout design component data D, the type of element and the connection information of the element are extracted as the functional element d1, and the characteristic value of the element is extracted as the characteristic element d2. The size, shape, position and name of input / output terminals of each figure are extracted as the target element d3. In other words, the layout design component data D
The information inherent in is a functional element d1, a characteristic element d
2, it is decomposed into three elements of structural element d3.

Considering the generation process of the layout design component data D, in the example of FIG. 4, the component data D is generated by combining the element e and the element b1.
Here, the element b1 is a functional element (specifically, a circuit diagram) obtained by decomposing another part, that is, the circuit design part data B ′, and the element e is a design rule (for example, , Spacing between wiring layers, etc.). After all, the layout design component data D is data generated by combining the element b1 obtained by decomposing another component and the element e provided from the outside.

The relationship between the component data will be described with reference to a more specific example. For example, the component data A shown in FIG.
If it is attempted to generate circuit design component data corresponding to (logic design component data), one inverter is composed of two transistors.
Are generated in such a manner that component data B '(not shown) are connected in a three-stage series. In this case, the component data B ′ is a functional element a1 inherent in the component data A.
(That is, information that the inverter elements are components connected in series in three stages). Further, in order to generate the layout design component data D corresponding to the component data B ', a functional element b1 included in the component data B' (that is, a circuit diagram showing that a pair of parallel transistors are connected in three stages in series). ) And an externally applied design rule e.

After all, a large number of LSI design component data are an aggregate having a complicated relationship with each other. FIG.
It is a simple model showing an example of this mutual relation. When the component data A is decomposed, elements a1, a2, and a3 are extracted,
When the component data B is decomposed, elements b1, b2, and b3 are extracted, and when the component data C is decomposed, elements c1 and c2 are extracted. The component data C is generated by combining the element a3 and the element b3, and the component data D
Is generated by synthesizing the element b2 and a design rule e which is an element given from the outside (this model is slightly different from the example of FIG. 4). From the above description, it can be understood that the component data used in each stage shown in FIG. 2 has a complicated relationship with each other.

§4 LSI design part data generation management machine
Ability Well, here back to FIG. 1 again, the operation of the device according to the present invention. The element extracting means 20 is a means having a function of extracting a specific element included in the desired component data from the desired component data. That is, when the layout design component data D in FIG. 4 is given, a process of extracting the functional element d1, the characteristic element d2, and the structural element d3 from this is performed. Means for performing such processing is known. For example, as a means for extracting the functional element d1, various circuit network extraction software is known.
Various electrical parameter extraction software are known as means for extracting the characteristic element d2, and various graphic operation software are known as means for extracting the structural element d3. On the other hand, the component synthesizing means 30
Is a unit having a function of synthesizing new component data by synthesizing an element inherent in desired component data or an element input from the outside. That is, FIG.
, A process of synthesizing new component data D by synthesizing the component b1 inherent in the component data B ′ and the element e input from the outside. Means for performing such processing are also known. That is, individual LSI design component data is generally generated by combining several elements, and such component data generation processing has conventionally been performed by various software. The expression conversion unit 40 is a unit having a function of generating another element by converting the expression of an element included in desired component data. For example, when an element called an inverter is expressed as logical design part data, it is expressed by a so-called inverter symbol mark in which a triangle is circled. If it is expressed by a transistor and further expressed as layout design component data, it is expressed as a complicated figure pattern.
However, each of these components must be a logic element called an inverter that performs the same function. The expression conversion means 40 is a means for converting the expression of substantially the same parts. The model of FIG. 5 shows an example in which the element x1 is obtained by performing the expression conversion of the element a2. Means for performing such expression conversion processing are also known, and various software have been conventionally used.

The feature of this apparatus is that when the element extraction processing is performed by the element extraction means 20, when the component synthesis processing is performed by the component synthesis means 30, and when the expression conversion processing is performed by the expression conversion means 40, That is, the process of each processing is stored as process data. That is, in FIG.
A design component data area 11 and a process data area 12 are provided in the inside, and each generated component data A,
B, C,... Are stored in the design component data area 11, and process data P1, P2, P
Are stored in the process data area 12. Here, the process data is information indicating a processing process of what kind of component or element has been obtained by what kind of processing. For example, in the example shown in FIG. 4, element extraction processing (disassembly processing) is performed on layout design part data D.
Is performed, the functional element d1, the characteristic element d2,
When the structural element d3 is obtained, information specifying software used for each element extraction processing is stored as process data. For example, information that “the element d1 is obtained as a result of performing a process of extracting a functional element from the component data D using the circuit network extraction software” is recorded as the process data. In the embodiment shown in FIG. 4, information indicating a related element of each element is further included in a part of the process data. For example, regarding the process of extracting the functional element d1, this element d1 is the functional element b of the component data B '.
1 is recorded as process data, and for the process of extracting the structural element d3, information indicating that the element d3 is related to the design rule e is recorded as process data. Has been recorded. Information indicating such related elements can be input by an operator when each process is executed, or can be automatically generated by software for executing each process.

The operation of the apparatus of FIG. 1 for the model shown in FIG. 5 is as follows. First, design part data area 1
1, it is assumed that component data A and B are stored in advance. Here, using the specific software in the element extracting means 20, the component data A is decomposed and the components a1, a
2, a process P1 for extracting the component data B and a process P2 for extracting the components b1, b2, and b3 by using the specific software in the component synthesizing means 30. It is assumed that a process P3 of generating new component data C by combining a3 and element b3 has been executed. In this case, new component data C is added in the design component data area 11, but at the same time, process data P1, P2, and P3 are recorded in the process data area 12. Subsequently, the element extracting means 20
Using the specific software in the above, a process P4 of decomposing the component data C and extracting the elements c1 and c2 is executed,
Furthermore, it is assumed that a process P5 of generating new component data D by synthesizing the elements b2 and c1 and the external element e using specific software in the component synthesizing means 30 is assumed. In this case, new component data D is added in the design component data area 11, and at the same time, process data P4 and P5 are recorded in the process data area 12. Further, when the expression conversion processing for converting the expression of the element a2 to obtain the element x1 by using the specific software in the expression conversion means 40, the process P6 is further performed.
Will be additionally recorded.

As described above, when various processes are performed using each unit in the apparatus shown in FIG. 1, the processing process is sequentially recorded in the process data area 12 as process data. By the way, in order to create an LSI design data sheet, it is only necessary to provide each component data in the design component data area 11, and the process data area 1
The process data in 2 is not directly needed. Therefore, the merit of recording such process data will be described below.

The progress of the semiconductor process is constantly evolving,
The degree of integration of devices formed on a semiconductor wafer is improving year by year. Therefore, each component data is appropriately updated, and so-called version upgrade is performed.
For example, in the case where a technology that can design the spacing between wiring layers to be shorter due to the improvement in insulation is developed, the design rules are updated, and as a result, the layout design component data is upgraded. For example, when the component data C shown in FIG. 3 is upgraded, new component data C in which each figure is reduced by one size
N can be generated. At this time, the component data C and CN are
Comparing each element extracted from each element, the functional element is the same (for example, a mask pattern for an inverter element remains the same even if the design rule is updated even if the design rule is updated). However, characteristic elements (for example, operation time) and structural elements (size, shape, input / output terminal positions) will change. Therefore, it is necessary to update other component data generated based on the characteristic element and the structural element to generate new component data. When such a version upgrade is performed, the process data area 1
2 is extremely effective. That is, when the content of one component or element is upgraded, it can be easily recognized from the process data whether the upgrade affects another component or element. , It is possible to easily perform the version-up process of another component or element that has an influence.

This will be described with reference to the model shown in FIG. Now, consider a case where the contents of the component data A are upgraded and a new component data AN is generated due to some technical progress. In this case, the process data area 1
2, the fact that the component data A has been decomposed into elements a1, a2, and a3 is recorded in the past, and if the process data P3 is read, the elements a3 and The fact that the component data C has been synthesized by b3 is recorded. Therefore,
When the element a3 is upgraded, it can be recognized that the component data C also needs to be upgraded. For example, if the component data A has been upgraded to AN and the element a3 has been upgraded to the element a3n, it is necessary to generate new component data CN by combining the element a3n and the element b3. In other words, because the component data A has been upgraded to AN, the component data C needs to be upgraded to CN. In the device according to the present invention, this version upgrade process can also be easily performed. The reason is that the process data P3 records the past processing process as to which component data C was generated by performing what kind of software and what kind of synthesis processing was performed on the element a3 and the element b3. Therefore, if completely the same processing is performed using the element a3n instead of the element a3, the upgraded part data CN is automatically obtained.

In this way, when the component data C is upgraded to CN, it can be easily recognized whether or not the content of the element c1 obtained by performing the process P4 has changed. For example, when the element c1 is upgraded to the element c1n, if the process P5 is executed for the element c1n, the element b2, and the design rule e, it is easy to upgrade the component data D to DN. You can do it.

In short, in the process data area 12,
By keeping a record of each executed process, it is possible to automatically recognize which other parts or elements will be affected when a certain part or element is upgraded, and By re-executing the same process as the past process, it is possible to automatically upgrade the affected parts.

§5 Data Sheet Output Function The operation of the LSI design component data generation management function in the apparatus shown in FIG. 1 has been described above. If this function is used, it is possible to easily keep the latest component data in the design component data area 11 as a database. A feature of the present invention is that a sheet information creating unit 60 and a sheet output unit 70 are further connected to a portion that performs the generation management function of the LSI design component data, thereby configuring a data sheet output device. . Hereinafter, an operation for outputting this data sheet will be described.

Now, consider a case where a user performs a specific ASIC design. In this case, the user may want to obtain various kinds of information about the parts used for the design.
Conventionally, the work of searching for necessary information from a data book distributed from a semiconductor maker was performed, but according to the apparatus of the present invention, a data sheet on which necessary information is posted by the following operation Can be easily obtained. First, the user provides element designation information to the element extracting means 20 from the input device 50.
This is information for specifying which element of which component is required. For example, if the layout design component data D shown in FIG. 4 requires information on the structural element d3 such as the size and shape, or the position and name of the input / output terminal, “the structural element d3 of the component data D is required. Yes, you do. Upon receiving the instruction, the element extracting means 20 performs a process of extracting the structural element d3 from the component data D in the design component data area 11. Here, for example, it is assumed that the mask pattern data as shown in FIG. 6 has been extracted as the structural element data d3.

The element data d3 thus extracted is sent to the sheet information creating means 60, where the data is edited. The editing work performed here is roughly divided into 2
It works exactly as follows. The first operation is an editing operation for the extracted element data itself. This is a task of selecting and extracting only data required by the user from the extracted element data. For example, when only the positions and names of the input / output terminals are required for the mask pattern data as shown in FIG.
0, it is sufficient to provide the sheet information creating means 60 with information indicating that fact as element editing information. The sheet information creating means 60 selects only the data required by the user from the extracted element data based on the element editing information. Specifically, only the data related to the positions and names of the input / output terminals is extracted from the mask pattern data as shown in FIG. 6, and the data as shown in FIG. 7 is obtained. Such an editing operation may be performed by performing a graphic operation for extracting only information of a predetermined layer from the mask pattern data. The second operation performed by the sheet information creating means 60 is an editing operation for adjusting the output of element data into a predetermined format. The user inputs, to the input device 50, the format setting information indicating which data is to be output at which position and in what format (for example, how to use the unit, whether to use the graph format or the table format). May be provided to the sheet information creating means 60 via

When the editing operation in the sheet information creating means 60 is completed, the edited data is supplied to the sheet output means 70 as sheet information. The sheet output unit 70 is specifically configured by peripheral devices such as a display, a printer, a magnetic disk device, and a magnetic tape device. If the output is performed on the display, the user can check the data sheet on the screen of the display, and if the output is performed on the printer, the data sheet printed on the paper can be obtained. Also, if output is made to a magnetic disk device or magnetic tape device,
Data sheets can be stored in the form of digital data.

FIG. 8 shows an example of a data sheet obtained as a result of output by a printer. In the area of this data sheet, the mask pattern data shown in FIG. 7 (only the part relating to the position and name of the input / output terminal) is output. Further, a symbol indicating the type of element of the component is output to the area, and a truth table of the element is output to the area. The symbol and the truth table are obtained by extracting the functional element d1 from the component data D. In addition, the characteristic value information (the relationship between the delay time T and the additional capacitance C) of the element is output to the area and the area. The characteristic value information is obtained from the component data D based on the characteristic element d.
2 is obtained. This characteristic value information is output in the form of a graph in the area and output in the form of a table in the area.
What is necessary is just to give to the sheet information creation means 60 as format setting information.

As described above, by using this apparatus, any information stored in the database prepared in the design component data area 11 can be output as a data sheet in any format. Also, the process data area 1
By using the process data in 2, it is possible to search for another component data related to one component data and output a data sheet for the searched component data. For example, as shown in FIG. 5, by executing the process P1 on the component data A, an element a3 is obtained, and the process P2 is performed on the component data B.
To obtain an element b3.
If the process data that the component data C can be synthesized by executing the process P3 using the element 3 and the element b3 is used, the component data C can be searched as the data related to the component data A. Such a search function is convenient when performing an operation of selecting a part to be actually used from a large number of parts. For example, in order to use a certain part X, the characteristic element of this part X
The delay time is output as a data sheet, and as a result, it is determined that it is necessary to use another component having a shorter delay time. In such a case, another component Y or Z generated using the functional element of the component X may be searched using the process data in the process data area 12. Since the components X, Y, and Z are components generated based on the same functional element, the logical functions are equivalent. Therefore, if the characteristic elements (delay times) of the searched parts Y and Z are output as a data sheet, the most appropriate part can be easily selected.

Although the present invention has been described with reference to a simple embodiment, the present invention is not limited to this embodiment but can be implemented in various other modes. For example,
Each unit shown in FIG. 1 may be configured by a single computer, or may be configured by a plurality of computers. Further, a configuration may be adopted in which a part is installed on the semiconductor manufacturer side, another part is set on the user side, and the two are connected via a communication line. Further, the elements themselves extracted by the element extracting means 20 can be stored in the design part data area 11 as one part data.

[0036]

As described above, according to the LSI design data sheet output apparatus of the present invention, LSI design part data is prepared as a database, and only the elements required by the user are extracted from this database, and the extracted elements are extracted. Since the data is edited in accordance with the format desired by the user and is output as a data sheet, the information required by the user can be provided in the format desired by the user.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of an output device of an LSI design data sheet according to the present invention.

FIG. 2 is a diagram showing each stage of a general LSI design work.

FIG. 3 is a diagram showing a specific example of general LSI design component data.

FIG. 4 is a diagram illustrating an example of an element extraction process and a component synthesis process for LSI design component data.

FIG. 5 is a diagram showing a simple model for explaining the interrelation of LSI design part data.

FIG. 6 is a diagram showing an example of mask pattern data extracted by the apparatus shown in FIG.

FIG. 7 is a diagram showing a result of editing the mask pattern data shown in FIG. 6;

FIG. 8 is a diagram showing an example of a data sheet output by the device shown in FIG. 1;

[Description of Signs] 1 ... Function design stage 2 ... Logic design stage 3 ... Circuit design stage 4 ... Layout design stage 10 ... Storage means 11 ... Design part data area 12 ... Process data area 20 ... Element extraction means 30 ... Part synthesis means 40 ... Expression conversion means 50 ... Input means 60 ... Sheet information creation means 70 ... Sheet output means A ... D ... Part data F1 ... Polysilicon layer F2 ... Diffusion layer a1-a3, b1-b3, c1-c2, d1-d3 Element e External element (design rule) I1 to I3 Inverter T1, T2 Transistor P1 to P6 Processing process / process data

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yuji Machiya 1-1-1 Ichigaya-Kagacho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd. (56) References JP-A-2-266474 (JP, A) ( 58) Field surveyed (Int. Cl. ⁷ , DB name) H01L 21/82, 27/118

Claims (3)

(57) [Claims] 1. A device for outputting the data sheet for the various components used in the LSI design, a storage means for holding the component data for each component as a database, a desired part data, thus shown in this part data Is
Elements that indicate the function of the parts that are
Elements, structural elements that indicate the structure
Element extraction means for extracting a specific element as element data, and by editing the element data extracted by the element extraction means based on predetermined information, a functional
Output elements, characteristic elements, and structural elements on data sheets
Sheet information creating means for creating sheet information expressed in the form of: a sheet output means for outputting a data sheet based on the sheet information; and an element for specifying an element to be extracted to the element extracting means. In addition to inputting element designation information, element editing information for specifying an editing process to be performed on the sheet information generating means and format setting information for specifying a format for sheet information to be generated are input. An output device for an LSI design data sheet, comprising: input means; 2. The apparatus according to claim 1, wherein a new component data is synthesized and added to a database in the storage means by synthesizing an element existing in the desired component data or an element input from the outside. A component synthesizing means, and a process data storage means for storing a process of the extraction processing performed by the element extracting means and a synthesis processing performed by the component synthesizing means. Output device. 3. The apparatus according to claim 2, wherein the function design part data, the logic design part data, and the circuit design part are provided.
Product data or layout design component data
For the desired part data expressed in data format,
Function indicating the function of the part indicated by the desired part data
Characteristic element, characteristic element showing electrical characteristics, or structure
Data that the desired component data has
To convert to a representation in a data format different from the format
Further provided, output device data sheet for LSI design, characterized in that so as to be stored in the process data storage means a process representation conversion process by the representation conversion unit representation converting means to generate more separate elements.