CN106874587B - Dynamic label system for IP parameterization unit combination and implementation method - Google Patents
Dynamic label system for IP parameterization unit combination and implementation method Download PDFInfo
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Abstract
the invention discloses a dynamic label system for IP parameterization unit combination, which comprises: label control unit and customer IP parameter list establishing module; the label control unit comprises a parameter mapping table generation module and an IP label generation module; the parameter mapping table generation module is used for making a parameter mapping table by scanning all parameters of the IP parameterization unit and comparing the parameter mapping table with a previous value; if the difference is not the same, calling an IP label generation module to generate an IP label in real time and storing the made parameter mapping table for next comparison; the client IP parameter table establishing module is used for scanning the IP label and translating the IP label to form a corresponding client IP parameter table. The invention also discloses a method for realizing the dynamic label for merging the IP parameterization units. The invention can realize automatic merging of the variable IP, thereby improving merging efficiency and accuracy.
Description
Technical Field
The invention relates to the field of semiconductor integrated circuit manufacturing, in particular to a dynamic label system for IP Parameterized Cell (Pcell) merging; the invention also relates to a method for realizing the dynamic label for merging the IP parameterization units.
Background
in chip design and production, a plurality of parameterization units are needed, the parameterization units are essentially computer scripts and are generally written by virtue of the speaker language of Cadence, and corresponding layouts are verified by virtue of Design Rule Check (DRC) and layout and circuit diagram (LVS). Under the condition of a given parameterization unit, a required unit layout structure can be obtained by inputting corresponding parameters, and a designer can conveniently design the layout.
a Component Description Format (CDF) library file is an attribute Description file of a device, and can describe attributes such as the type and parameters of the device. The parameter corresponding to the parameterization unit is a CDF parameter. The developed parameterization units and CDF library are part of a Process Design Kit (PDK).
in general, parameterized cell development is generally only for transistor-level devices, including basic MOS transistors, resistors, capacitors, etc.; for example, after a parameterization unit of an MOS transistor is developed, the layout structures of the MOS transistors with different parameters such as sizes can be obtained by inputting different parameters, and the layout design of the MOS transistors with different parameters is not required to be separately carried out.
The IP module, i.e., the intellectual property module, is a reusable module in the design of the integrated circuit chip, and the IP module is usually subjected to design verification, so that a designer can design on the basis of the IP module, thereby shortening the period required by the design. The IP module is a module having intellectual property rights and can be used only after being authorized by the owner.
The IP Pcell (IP parameterization unit) is used for developing each device unit in the IP module, namely the parameterization unit, and for the IP Pcell, on one hand, the IP Pcell needs to be provided for a client to generate a variable virtual image IP (phantom IP), and on the other hand, the IP Pcell needs to generate a corresponding complete IP required by the client in a wafer factory; the virtual image IP is a layout structure only comprising a metal layer of the circuit, the complete IP comprises a layout structure of the whole complete circuit, and the virtual image IP is set for realizing intellectual property protection.
Compared with the conventional IP with a fixed layout, the variable IP adopting the Pcell has the characteristic of various customized parameters. The number of parameters can be as much as 10 depending on the design application. If a conventional IP merging (Merge) method is followed, when a customer provides a chip layout design file TO a wafer factory, the customer needs TO report various parameters of the used IP by himself, and a tape-out (TO) department checks and verifies the information reported by the customer, and then generates corresponding complete IPs one by one and performs merging operation. It can be seen that the existing IP merging requires manual operation, which reduces efficiency and accuracy.
Disclosure of Invention
The invention aims to provide a dynamic label system for merging IP parameterization units, which can realize automatic merging of variable IP and improve merging efficiency and accuracy. Therefore, the invention also provides a method for realizing the dynamic label for merging the IP parameterization units.
in order to solve the above technical problem, the dynamic label system for merging IP parameterized units provided by the present invention comprises: label control unit and customer IP parameter list establishing module.
and the label control unit is activated after the virtual image IP is generated, and comprises a parameter mapping table generation module and an IP label generation module.
The parameter mapping table generation module is used for making a parameter mapping table by scanning all parameters of the IP parameterization unit, comparing the made parameter mapping table with a parameter mapping table stored in the previous time, and if the parameters are the same, the IP label generation module does not need to be called and the made parameter mapping table does not need to be stored; if not, the IP label generating module is required to be called and the made parameter mapping table is stored for next comparison.
And the IP label generating module is used for generating an IP label in real time according to the corresponding parameter mapping table when being called.
And the client IP parameter table establishing module is used for scanning the IP label and translating the IP label to form a corresponding client IP parameter table.
A further improvement is that the parameter mapping table generating module stores the parameter mapping table to be stored in a Component Description Format (CDF) library.
In a further improvement, the IP tag generated by the IP tag generation module is a string type tag.
the further improvement is that the IP label generating module converts the physical type, the priority, the parameter variable name, the parameter paraphrase and the parameter value of each type of parameter into the IP label of the character string type according to the corresponding format.
The further improvement is that the IP label has a scanning characteristic value, and the client IP parameter table establishing module identifies the IP label through the scanning characteristic value and utilizes the scanning characteristic value to perform global search in a GDS file so as to locate the bottommost subunit where the IP corresponding to the IP label is located.
In a further improvement, the client IP parameter table establishing module translates the content of the IP label into the bottommost subunit according to the scanned IP label and the currently located bottommost subunit, so as to establish a corresponding client IP parameter table.
The dynamic label system further comprises a merging module, wherein the merging module automatically generates a complete IP according to the IP parameter table established by the client IP parameter table establishing module.
A further improvement is that the tag control unit operates in the background before the virtual image IP is generated.
The further improvement is that the parameter mapping table generating module, the IP label generating module and the client IP parameter table establishing module of the label control unit are all implemented by using programming languages supported by EDA tools.
In order to solve the above technical problem, the method for implementing the dynamic tag for merging the IP parameterized units provided by the present invention comprises the following steps:
The label control unit is activated after the virtual image IP is generated, and a parameter mapping table generation module of the label control unit generates a parameter mapping table by scanning all parameters of the IP parameterization unit.
Step two, comparing the made parameter mapping table with the parameter mapping table stored last time, if the two mapping tables are the same, calling the IP label generating module is not needed, and the made parameter mapping table is not needed to be stored; and if not, performing the third step.
Step three, calling an IP label generating module of the label control unit and storing the made parameter mapping table for next comparison; and the IP label generating module generates an IP label in real time according to the corresponding parameter mapping table when being called.
and step four, scanning the IP label through a client IP parameter table establishing module and translating the IP label to form a corresponding client IP parameter table.
in a further improvement, the parameter mapping table generating module stores the parameter mapping table to be stored in a CDF library.
The further improvement is that the IP label generated by the IP label generating module is a character string type label.
The further improvement is that the IP label generating module converts the physical type, the priority, the parameter variable name, the parameter paraphrase and the parameter value of each type of parameter into the IP label of the character string type according to the corresponding format.
the further improvement is that the IP label has a scanning characteristic value, and the client IP parameter table establishing module identifies the IP label through the scanning characteristic value and utilizes the scanning characteristic value to perform global search in a GDS file so as to locate the bottommost subunit where the IP corresponding to the IP label is located.
The further improvement is that the client IP parameter table establishing module translates the content of the IP label into the bottommost subunit according to the scanned IP label and the currently positioned bottommost subunit so as to establish a corresponding client IP parameter table.
The further improvement still includes:
And step five, merging through a merging module, wherein the merging module automatically generates a complete IP according to the IP parameter table established by the client IP parameter table establishing module.
A further improvement is that the tag control unit operates in the background before the virtual image IP is generated.
The further improvement is that the parameter mapping table generating module, the IP label generating module and the client IP parameter table establishing module of the label control unit are all implemented by using programming languages supported by EDA tools.
For the combination of the variable IP modules with the Pcell, the dynamic IP label can be formed in real time through the IP label generating module, namely the IP label can dynamically change along with the change of the parameters of the scanned IP parameterization unit, namely the IP label can reflect the information of all the parameters of the corresponding IP module after the virtual image IP is generated; then, the TO department can determine the parameters represented by the IP label and can determine the parameter table of the client IP corresponding TO the translation layer of the IP label by directly scanning the IP label, namely, the invention can realize that the parameters of the Pcell are automatically implanted into the IP layout at the client, the IP layout data is usually stored by adopting a GDS file, and the parameters of the Pcell are transmitted TO the unit of the corresponding GDS file after the parameter table of the client IP is formed; therefore, the system of the invention can automatically obtain the parameter list of the merged client IP.
The invention can generate complete IP and merge after obtaining the parameter list of client IP, and can realize the automation of scanning translation and merging after the client end scans the IP label, and can realize the automatic combination and operation of variable IP by adopting the integrated tool of IP label and merging; compared with the situation that when the existing client carries out tape in, all parameters of the used IP need TO be reported manually, the TO department needs TO check and verify the information reported by the client, and then corresponding complete IPs are generated one by one and combined, the invention avoids the defects of efficiency and accuracy caused by manual operation.
In addition, the invention can be completely developed and realized by using the programming language supported by the EDA tool, is convenient to develop and is compatible with the prior art.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a block diagram of a dynamic tagging system for IP parameterization unit merging according to an embodiment of the present invention;
FIG. 2 is a flow chart of the operation of the tag control unit of an embodiment of the present invention;
FIG. 3A is a diagram illustrating a format structure of an IP label according to an embodiment of the present invention;
FIG. 3B is an example of a particular IP label formed in accordance with the format of FIG. 3A;
Fig. 4 is a schematic diagram of a specific workflow of the client IP parameter table establishing module according to the embodiment of the present invention.
Detailed Description
FIG. 1 is a block diagram of a dynamic label system for IP parameterization unit merging according to an embodiment of the present invention; the dynamic label system for IP parameterization unit combination in the embodiment of the invention comprises: a label control unit 1 and a client IP parameter table establishing module 8.
As shown in fig. 2, it is a flowchart of the operation of the tag control unit according to the embodiment of the present invention; the label control unit 1 is activated after the virtual image IP is generated, and the label control unit 1 includes a parameter mapping table generating module 2 and an IP label generating module 3. Before the virtual image IP is generated, the tag control unit 1 operates in the background.
The parameter mapping table generating module 2 makes a parameter mapping table 4 by scanning all parameters of the IP parameterization unit, compares the made parameter mapping table 4 with the parameter mapping table 4 stored in the previous time, and if the parameters are the same, does not need to call the IP label generating module 3 and store the made parameter mapping table 4, that is, the IP label 6 and the parameter mapping table 4 are not changed; if the difference is not the same, the IP label generating module 3 needs to be called and the made parameter mapping table 4 needs to be stored for next comparison. Preferably, the parameter mapping table generating module 2 stores the parameter mapping table 4 to be stored in the CDF library 5.
The IP label generating module 3 is configured to generate an IP label 6 in real time according to the corresponding parameter mapping table 4 when being called.
the IP label 6 generated by the IP label generating module 3 is a character string type label. Preferably, the IP tag generating module 3 converts the physical type, priority, parameter variable name, parameter paraphrase, and parameter value of each type of parameter into the IP tag 6 of the character string type according to the corresponding format. Fig. 3A is a schematic diagram illustrating a format structure of an IP tag according to an embodiment of the present invention; as shown in fig. 3B, is an example of a specific IP tag formed in the format of fig. 3A; as can be seen in fig. 3A, the character strings of the IP tag 6 respectively include: the scan feature values, parameter variable names, parameter values, parameter definitions and parameter types are each filled with the associated specific parameters in one embodiment of FIG. 3B.
in the embodiment of the present invention, the IP tag 6 has characteristics of variability and identifiability. By variability, it is meant that, for different pcells, when the parameters of the Pcell change, the specific values in fig. 3B change accordingly, enabling dynamic change of the IP tag 6.
For identifiability, identification of the IP tag 6 is mainly achieved by scanning feature values in the IP tag 6. As shown in fig. 3B, the scanning characteristic value: the method is characterized by comprising a character string (# HGIP) and four digits (0-9), wherein the first two digits of the four digits represent the priority of parameters, and the last two digits represent the serial number of the called IP Pcell.
Description of parameter priority: when a complete IP is generated at a later stage, the sequence of parameter assignment is crucial. Take 500V high voltage IP as an example (as an example only, without limiting the scope): the location of its Jfet directly affects the range coverage of the Drain finger width, so the priority of the Drain finger width is higher.
The client IP parameter table establishing module 8 is configured to scan the IP label 6 and translate the IP label 6 to form a corresponding client IP parameter table 9. In the embodiment of the present invention, the client IP parameter table establishing module 8 identifies the IP tag 6 through the scanning feature value and performs global search in a GDS file by using the scanning feature value, so as to locate the bottommost subunit where the IP corresponding to the IP tag 6 is located. The client IP parameter table establishing module 8 translates the content of the IP label 6 into the bottommost sub-unit according to the scanned IP label 6 and the currently located bottommost sub-unit, thereby establishing a corresponding IP parameter table.
fig. 4 is a schematic diagram of a specific workflow of a client IP parameter table establishing module according to an embodiment of the present invention; fig. 3 is an example (only as an example, and not limited to this range) of the IP of a 500V high-voltage device, and the process of the client IP parameter table establishing module 8 establishing an IP parameter table mainly includes the following steps:
(1) and the GDS file is globally searched by using the scanning characteristic value, and the lowest-layer subunit where the IP is positioned can be positioned by combining the hierarchical structure characteristic of the GDS. In fig. 4, a hierarchical structure of GDS is shown, for example, the bottom of the cellA corresponding to the mark 101 includes the Cell B corresponding to the mark 102, and the bottoms of the mark 101 and the mark 102 both include the IP, as shown by the mark 103. The lowest level of sub-cells where the corresponding IP is located can be determined by globally searching the GDS file with the "scan feature value", as indicated by reference numeral 103.
(2) And (3) comprehensively scanning the IP label and the currently positioned lowest layer subunit, translating the content of the IP label 6 and establishing an IP parameter table in one-to-one correspondence.
As in fig. 4:
the bottom layer subunit positioning values are:r700$$189006892
examples of IP tags are:
After combining the two for translation:
as can be seen from the above, the translated IP parameter table 9 includes the parameter values transmitted from the IP tag 6, for example, the parameter value "500 u", that is, 500 μm, of the IP tag 6 corresponding to "# HGIP 0101" is "500 e-6" in the IP parameter table 9, and the parameter value "j 12" of the IP tag 6 corresponding to "# HGIP 0401" is also "j 12" in the IP parameter table 9.
The dynamic label system also comprises a merging module which automatically generates a complete IP according to the IP parameter table 9 established by the client IP parameter table establishing module 8. Since the IP parameter table 9 includes parameters of the IP Pcell, generation of a complete IP can be achieved.
in the embodiment of the present invention, the parameter mapping table generating module 2 and the IP label generating module 3 of the label control unit 1, the client IP parameter table establishing module 8, and the merging module are all implemented by using a programming language supported by an EDA tool.
The implementation method of the dynamic label for IP parameterization unit combination comprises the following steps:
Step one, before the virtual image IP is generated, the tag control unit 1 works in the background. After the virtual image IP is generated, the tag control unit 1 is activated, and the parameter mapping table generating module 2 of the tag control unit 1 makes a parameter mapping table 4 by scanning all parameters of the IP parameterization unit.
step two, comparing the made parameter mapping table 4 with the parameter mapping table 4 stored at the previous time, if the two mapping tables are the same, calling the IP label generating module 3 is not needed, and the made parameter mapping table 4 is not needed to be stored; and if not, performing the third step.
Step three, calling an IP label generating module 3 of the label control unit 1 and storing the made parameter mapping table 4 for next comparison; and the IP label generating module 3 generates an IP label 6 in real time according to the corresponding parameter mapping table 4 when being called. Preferably, the parameter mapping table generating module 2 stores the parameter mapping table 4 to be stored in the CDF library 5.
The IP label 6 generated by the IP label generating module 3 is a character string type label. Preferably, the IP tag generating module 3 converts the physical type, priority, parameter variable name, parameter paraphrase, and parameter value of each type of parameter into the IP tag 6 of the character string type according to the corresponding format. Fig. 3A is a schematic diagram illustrating a format structure of an IP tag according to an embodiment of the present invention; as shown in fig. 3B, is an example of a specific IP tag formed in the format of fig. 3A; as can be seen in fig. 3A, the character strings of the IP tag 6 respectively include: the scan feature values, parameter variable names, parameter values, parameter definitions and parameter types are each filled with the associated specific parameters in one embodiment of FIG. 3B.
In the embodiment of the present invention, the IP tag 6 has characteristics of variability and identifiability. By variability, it is meant that, for different pcells, when the parameters of the Pcell change, the specific values in fig. 3B change accordingly, enabling dynamic change of the IP tag 6.
for identifiability, identification of the IP tag 6 is mainly achieved by scanning feature values in the IP tag 6. As shown in fig. 3B, the scanning characteristic value: the method is characterized by comprising a character string (# HGIP) and four digits (0-9), wherein the first two digits of the four digits represent the priority of parameters, and the last two digits represent the serial number of the called IP Pcell.
Description of parameter priority: when a complete IP is generated at a later stage, the sequence of parameter assignment is crucial. Take 500V high voltage IP as an example (as an example only, without limiting the scope): the location of its Jfet directly affects the range coverage of the Drain finger width, so the priority of the Drain finger width is higher.
And step four, scanning the IP label 6 through a client IP parameter table establishing module 8 and translating the IP label 6 to form a corresponding client IP parameter table 9.
In the embodiment of the present invention, the client IP parameter table establishing module 8 identifies the IP tag 6 through the scanning feature value and performs global search in a GDS file by using the scanning feature value, so as to locate the bottommost subunit where the IP corresponding to the IP tag 6 is located. The client IP parameter table establishing module 8 translates the content of the IP label 6 into the bottommost sub-unit according to the scanned IP label 6 and the currently located bottommost sub-unit, thereby establishing a corresponding IP parameter table.
Fig. 4 is a schematic diagram of a specific workflow of a client IP parameter table establishing module according to an embodiment of the present invention; fig. 3 is an example (only as an example, and not limited to this range) of the IP of a 500V high-voltage device, and the process of the client IP parameter table establishing module 8 establishing an IP parameter table mainly includes the following steps:
(1) And the GDS file is globally searched by using the scanning characteristic value, and the lowest-layer subunit where the IP is positioned can be positioned by combining the hierarchical structure characteristic of the GDS. In fig. 4, a hierarchical structure of GDS is shown, for example, the bottom of the cellA corresponding to the mark 101 includes the Cell B corresponding to the mark 102, and the bottoms of the mark 101 and the mark 102 both include the IP, as shown by the mark 103. The lowest level of sub-cells where the corresponding IP is located can be determined by globally searching the GDS file with the "scan feature value", as indicated by reference numeral 103.
(2) And (3) comprehensively scanning the IP label and the currently positioned lowest layer subunit, translating the content of the IP label 6 and establishing an IP parameter table in one-to-one correspondence.
As in fig. 4:
the bottom layer subunit positioning values are:r700$$189006892
examples of IP tags are:
After combining the two for translation:
As can be seen from the above, the translated IP parameter table 9 includes the parameter values transmitted from the IP tag 6, for example, the parameter value "500 u", i.e. 500 μm, of the IP tag 6 corresponding to "# HGIP 0101" is "500 e-6" in the IP parameter table 9, and the parameter value "j 12" of the IP tag 6 corresponding to "# HGIP 0401" is also "j 12" in the IP parameter table 9.
And step five, merging through a merging module, wherein the merging module automatically generates a complete IP according to the IP parameter table established by the client IP parameter table establishing module 8.
In the method of the embodiment of the present invention, the parameter mapping table generating module 2 and the IP label generating module 3 of the label control unit 1, and the client IP parameter table establishing module 8 and the merging module are all implemented by using a programming language supported by an EDA tool.
the present invention has been described in detail with reference to the specific embodiments, but these should not be construed as limitations of the present invention. Many variations and modifications may be made by one of ordinary skill in the art without departing from the principles of the present invention, which should also be considered as within the scope of the present invention.
Claims (12)
1. a dynamic tagging system for IP parameterized unit consolidation, comprising: label control unit and customer IP parameter list establishing module;
the label control unit is activated after the virtual image IP is generated, and comprises a parameter mapping table generation module and an IP label generation module;
the parameter mapping table generation module is used for making a parameter mapping table by scanning all parameters of the IP parameterization unit, comparing the made parameter mapping table with a parameter mapping table stored in the previous time, and if the parameters are the same, the IP label generation module does not need to be called and the made parameter mapping table does not need to be stored; if the IP label is different from the reference IP label, the IP label generating module needs to be called and the made parameter mapping table needs to be stored for next comparison;
The IP label generating module is used for generating an IP label in real time according to the corresponding parameter mapping table when being called;
The client IP parameter table establishing module is used for scanning the IP label and translating the IP label to form a corresponding client IP parameter table;
The IP label is provided with a scanning characteristic value, and the client IP parameter table establishing module identifies the IP label through the scanning characteristic value and utilizes the scanning characteristic value to perform global search in a GDS file so as to position the bottommost subunit where the IP corresponding to the IP label is located;
The client IP parameter table establishing module translates the content of the IP label into the bottommost subunit according to the scanned IP label and the currently positioned bottommost subunit so as to establish a corresponding client IP parameter table;
The dynamic label system also comprises a merging module which automatically generates a complete IP according to the IP parameter table established by the client IP parameter table establishing module.
2. a dynamic labeling system for IP parameterization unit merging according to claim 1, characterized in that: and the parameter mapping table generating module stores the parameter mapping table required to be stored into a CDF library.
3. A dynamic labeling system for IP parameterization unit merging according to claim 1, characterized in that: the IP label generated by the IP label generating module is a character string type label.
4. a dynamic labeling system for IP parameterization unit merging according to claim 3, characterized in that: and the IP label generation module converts the physical type, the priority, the parameter variable name, the parameter paraphrase and the parameter value of each type of parameter into the IP label of the character string type according to the corresponding format.
5. A dynamic labeling system for IP parameterization unit merging according to claim 1, characterized in that: before the virtual image IP is generated, the tag control unit operates in the background.
6. A dynamic labeling system for IP parameterization unit merging according to claim 1, characterized in that: the parameter mapping table generation module, the IP label generation module and the client IP parameter table establishment module of the label control unit are all realized by a programming language supported by an EDA tool.
7. A method for realizing dynamic labels for IP parameterization unit merging is characterized by comprising the following steps:
step one, after a virtual image IP is generated, the label control unit is activated, and a parameter mapping table generation module of the label control unit makes a parameter mapping table by scanning all parameters of an IP parameterization unit;
Step two, comparing the made parameter mapping table with the parameter mapping table stored last time, if the two mapping tables are the same, calling the IP label generating module is not needed, and the made parameter mapping table is not needed to be stored; if not, performing the third step;
Step three, calling an IP label generating module of the label control unit and storing the made parameter mapping table for next comparison; the IP label generating module generates an IP label in real time according to the corresponding parameter mapping table when being called;
Step four, scanning the IP label through a client IP parameter table establishing module and translating the IP label to form a corresponding client IP parameter table;
The IP label is provided with a scanning characteristic value, and the client IP parameter table establishing module identifies the IP label through the scanning characteristic value and utilizes the scanning characteristic value to perform global search in a GDS file so as to position the bottommost subunit where the IP corresponding to the IP label is located;
The client IP parameter table establishing module translates the content of the IP label into the bottommost subunit according to the scanned IP label and the currently positioned bottommost subunit so as to establish a corresponding client IP parameter table;
Further comprising:
And step five, merging through a merging module, wherein the merging module automatically generates a complete IP according to the IP parameter table established by the client IP parameter table establishing module.
8. The method of claim 7, wherein the dynamic tag is implemented as a dynamic tag for IP parameterization unit consolidation: and the parameter mapping table generating module stores the parameter mapping table required to be stored into a CDF library.
9. the method of claim 7, wherein the dynamic tag is implemented as a dynamic tag for IP parameterization unit consolidation: the IP label generated by the IP label generating module is a character string type label.
10. The method of claim 9, wherein the dynamic tag is implemented as a dynamic tag for IP parameterized unit merging: and the IP label generation module converts the physical type, the priority, the parameter variable name, the parameter paraphrase and the parameter value of each type of parameter into the IP label of the character string type according to the corresponding format.
11. The method of claim 7, wherein the dynamic tag is implemented as a dynamic tag for IP parameterization unit consolidation: before the virtual image IP is generated, the tag control unit operates in the background.
12. The method of claim 7, wherein the dynamic tag is implemented as a dynamic tag for IP parameterization unit consolidation: the parameter mapping table generation module, the IP label generation module and the client IP parameter table establishment module of the label control unit are all realized by a programming language supported by an EDA tool.
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| CN106874587A (en) | 2017-06-20 |
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