JP3219066B2 - Analog part deletion information addition system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic hardware generation method for automatically generating a hardware description of an electronic circuit, and is particularly effective for automatically generating a hardware description for an analog component not required for logic verification. The present invention relates to an analog component deletion information providing system for providing detailed deletion information.

[0002]

2. Description of the Related Art Conventionally, in this type of hardware description generation system, the logic function of a circuit is represented by a circuit diagram composed of only so-called logic components in which analog components having no logic such as resistors and capacitors are not mixed. The hardware description is automatically generated. Alternatively, only connection information is extracted from a circuit diagram of an electronic circuit, for example, circuit diagram data representing a logic circuit, and a hardware description representing a logic function of the circuit is automatically generated. In this case, it is necessary to automatically generate a hardware description after deleting analog parts not required for logic verification.

For example, in Japanese Patent Laid-Open Publication No. Hei 6-68198, after analog components are recognized by a circuit configuration recognizing unit and analog components are deleted by an analog component deleting unit from a circuit diagram in which logical components and analog components are mixed, The logic circuit is being rebuilt. In such an analog component deletion hardware description generation method, an electronic circuit diagram for logic verification in which analog components unnecessary for logic verification such as a resistance component are deleted and an actual electronic circuit diagram are separately prepared.
These circuit diagrams need to be managed twice. In Japanese Patent Application Laid-Open No. 9-237289, on the circuit diagram of an electronic circuit, deletion information effective for automatic hardware description generation is added to analog parts that are not necessary for logic verification such as resistance parts. It is possible to automatically generate a hardware description for logic verification from a circuit diagram of an electronic circuit without changing circuit diagram information. This eliminates the need to manage the circuit diagram of the actual electronic circuit and the electronic circuit diagram for logic verification in duplicate.

[0004]

However, in the technique disclosed in Japanese Patent Application Laid-Open No. Hei 9-237289, deletion information must be manually added to analog parts in circuit diagrams of all electronic circuits. For this reason, there is a risk that deletion information may be mistakenly added and automatic generation of an accurate hardware description may not be performed. Also, Japanese Patent Application Laid-Open No. 6-6819
In Japanese Unexamined Patent Publication No. 8 (1995) -189, there is a problem that an analog component deletion rule cannot be added, so that an unrecognizable analog component requires manual work to be deleted.

The present invention has been made in view of such circumstances, and a purpose of the present invention is to automatically add, to analog components not required for logic verification, deletion information effective for automatically generating a hardware description. Accordingly, the object is to improve productivity and reliability in automatic generation of a hardware description.

[0006]

According to the present invention, there is provided an analog component deletion information providing system which adds, on a circuit diagram of an electronic circuit, deletion information effective for automatically generating a hardware description to an analog component such as a resistance component which is not necessary for logic verification. To add automatically. At the same time, by additionally registering deletion rule data, a new deletion rule can be handled.

That is, the analog component deletion information adding system according to the first aspect provides circuit diagram data representing an electronic circuit and an analog component representing the type of analog component included in the circuit diagram.
Data storage means storing analog component information data and deletion rule data describing a rule for deleting an analog component from a circuit diagram; and a logical connection for extracting a logical connection from the circuit diagram data stored in the data storage means Extracting means; analog component recognizing means for determining whether or not each component is an analog component by referring to the analog component information data from the logical connection extracted by the logical connection extracting means; For the analog part recognized by the means, with reference to the deletion rule data,
And a deletion information adding unit for adding deletion data indicating that the component is an analog component to be deleted from the circuit diagram data. The data storage unit further includes a deletion information adding unit for deleting the analog component. It is characterized by storing deletion information addition circuit diagram data to which data has been added.

[0008]

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of an analog component deletion information adding system according to the present invention. The configuration shown in this drawing is implemented on, for example, an engineering workstation (EWS).

In FIG. 1, 10 is an input / output device, 11 is an arithmetic processing unit, 12 is a data storage device, and the data storage device 12 is circuit diagram data 13 representing an electronic circuit.
, Analog component information data 14 representing the type of analog component, deletion rule data 15 describing a rule for deleting the analog component from the circuit diagram, and deletion information addition to which deletion information effective for automatically generating hardware description is added. The circuit diagram data 16 is stored. Reference numeral 17 denotes a deletion information adding unit for realizing the present invention, which is constituted by a software program. The deletion information adding unit 17 includes a logical connection extracting unit 18, an analog component recognizing unit 19, and a deletion information adding unit 20, and is realized by the processing of the arithmetic processing unit 11.

FIG. 2 is a flowchart showing a processing flow of the analog component deletion information adding system shown in FIG.
FIG. 3 is a specific circuit example for describing an embodiment of the present invention. Therefore, FIGS. 1, 2 and 3
The embodiment will be described with reference to FIG. The circuit diagram data [Aa] shown in FIG. 3A includes a component A1 and a component A2, where the component A1 is a resistance component unnecessary for logic verification, the component A2 is a logic circuit element, and one end of the resistor A1. And the signal line are connected to one end of the component A2. FIG.
The circuit diagram data [Ba] shown in (b) is composed of a component B1, a component B2, and a component B3. In this case, a resistor component B2 is connected between one end of the logic circuit element component B1 and the logic circuit element component B3.

First, the connection information of the circuit diagram data 13 is extracted by the logical connection extracting means 18 (step S1, hereinafter, steps are omitted). Next, analog component recognition means 1
According to 9, based on the analog component information data 14, it is determined whether or not each component is an analog component from the extracted connection information (S2). If the analog component is recognized (S2, YES), the type of the deletion information to be added is determined based on the deletion rule data 15 (S3).
The deletion information adding means 20 adds the deletion information D1 to the component (resistance) A1 of the circuit diagram data [Aa] based on the deletion information addition circuit diagram data 16, and adds the component (resistance) of the circuit diagram data [Ba]. 3.) Add deletion information D2 to B2 (S4). Such processing is repeated until the logic verification of the circuit diagram data 13 is completed (S5). In this way, the deletion information added circuit diagram data 16 to which the deletion information determined for the analog component is added is obtained.

Thus, for example, in the circuit diagram data [Aa] of FIG. 3A, the component (resistance) A1 to which the deletion information D1 is added is automatically deleted, and the component A2 which is a logic circuit element is deleted. This is a circuit diagram in which only signal lines are connected to terminals. Similarly, in the circuit diagram data [Ba] of FIG. 3B, the component (resistance) B2 to which the deletion information D2 is added is automatically deleted, and the components B1 and B2, which are the logic circuit elements, are directly connected. It is a connected circuit diagram. Based on the logic circuit diagram generated in this way, a hardware description generation unit (not shown) automatically generates a hardware description of the electronic circuit.

The embodiment described above is an example for explaining the present invention, and the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the invention. is there. For example, the data storage device and the deletion information adding unit are not limited to the configuration blocks shown in FIG. 1, but may have any configuration as long as the unit can automatically add deletion information to analog parts. However, it goes without saying that it falls within the scope of the present invention.

[0015]

As described above, according to the analog component deletion information providing system of the present invention, deletion information effective for hardware description automatic generation is provided for analog components not required for logic verification such as resistance components. Can be automatically added to the circuit diagram of the electronic circuit. As a result, there is no danger of giving incorrect deletion information according to the deletion rule data. Further, by additionally registering deletion rule data, it is possible to cope with a new deletion rule. Moreover, all the deletion information is automatically added,
The productivity and the reliability in the automatic generation of the hardware description can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating an embodiment of an analog component deletion information providing system according to the present invention.

FIG. 2 is a flowchart showing a processing flow of the analog component deletion information adding system shown in FIG. 1;

FIG. 3 is a specific circuit example for describing an embodiment of the present invention.

[Explanation of symbols]

Reference Signs List 10: input / output device, 11: arithmetic processing device, 12: data storage device, 13: circuit diagram data, 14: analog component information data, 15: deletion rule data, 16: deletion information added circuit diagram data, 17: deletion information Adding means, 18: logical connection extracting means, 19: analog component recognizing means, 20: deletion information adding means

Claims (1)

(57) [Claims] 1. An analog component deletion for supporting automatic generation of a hardware description of an electronic circuit by adding deletion information effective for automatically generating a hardware description to an analog component described in a circuit diagram of the electronic circuit. In the information providing system, circuit diagram data representing an electronic circuit and analog component information data representing the type of analog component included in the circuit diagram
And data storage means for storing deletion rule data describing a rule for deleting an analog component from a circuit diagram; logical connection extraction means for extracting a logical connection from the circuit diagram data stored in the data storage means; An analog component recognizing unit that determines whether or not each component is an analog component by referring to the analog component information data from the logical connection extracted by the logical connection extracting unit; And a deletion information adding unit for adding deletion data indicating that the analog component is an analog component to be deleted from the circuit diagram data with reference to the deletion rule data for the analog component. The storage means further stores deletion information addition circuit diagram data in which deletion data has been added to the analog component by the deletion information addition means. Analog components deletion information imparting system characterized by being accommodated.