CN100416581C - Method and device for automatically adjusting Fanout design line width - Google Patents
Method and device for automatically adjusting Fanout design line width Download PDFInfo
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- CN100416581C CN100416581C CNB2006100724422A CN200610072442A CN100416581C CN 100416581 C CN100416581 C CN 100416581C CN B2006100724422 A CNB2006100724422 A CN B2006100724422A CN 200610072442 A CN200610072442 A CN 200610072442A CN 100416581 C CN100416581 C CN 100416581C
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- fanout
- width
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Abstract
A method for automatically regulating line-width in Fanout design includes obtaining information of component welding pad and minimum line-width attribute information of set network, automatically calculating and confirming Fanout line-width value according to obtained information as well as automatically carrying out regulation on Fanout line-width value.
Description
Technical field
The present invention relates to the PCB design field, relate in particular to the method for adjusting live width in a kind of Fanout (fan-out) design automatically.
Background technology
Because the needs of PCB design self routing, after finishing, device layout needs to carry out the Fanout design, demand according to design, the device pin of different signal types, the width of Fanout extension line is different, as shown in Figure 1, the drawing live width and may only need 6mil of normal signal pin for example, and power supply, the width of extension line may need 20mil even wideer.
Simultaneously, owing to the pin number of the device that need be Fanout is numerous, the device pin to the unlike signal type in the process of carrying out Fanout carries out the live width setting that Fanout needs frequent change extension line, causes design efficiency very low.
For addressing the above problem, the method that present industry software provides is the attribute that objective network is provided with a minimum feature, and in a single day this attribute is provided with, and the minimum widith of the live width after objective network goes between out is exactly the value of this minimum feature attribute, for example, concrete set-up mode can be as follows::
NET：S1I22\S1N131
MIN_LINE_WIDTH*10MIL
When the eda software that use has this function carried out device Fanout, the minimum widith of the extension line of device pin can be set.But this implementation function singleness, and can not satisfy the demand that existing P CB designs fully.With a concrete application example this method is analyzed explanation below:
For carrying out the Fanout of PCB design shown in Figure 2, at first this network minimum feature attribute is set to 10mil, and set-up mode is as follows:
NET：V33
MIN_LINE_WIDTH*10MIL
Based on the Fanout effect of above-mentioned setting as shown in Figure 3, the network that shows among the figure possesses the Fanout effect of minimum feature attribute 10mil, as can be seen, in the a-quadrant, can meet the demands, and live width is obviously meticulous in the B zone, can't meet the demands, therefore, still need the deviser to adjust by hand, operating process is still comparatively loaded down with trivial details.
And when this network possesses minimum feature attribute 30mil, the Fanout design sketch of described Fig. 2 as shown in Figure 4, the network that shows among the figure possesses the Fanout effect of minimum feature attribute 30mil, as can be seen, meet the demands this moment in the B zone, and in the a-quadrant because live width is thick excessively, make the Fanout extension line contact with adjacent device pin, need deviser's manual setting too.
This phenomenon is very general in the PCB of reality design, and therefore, the method that minimum feature is set can not solve in the Fanout design process well, and live width is adjusted the problem loaded down with trivial details, that design efficiency is low.
Summary of the invention
The purpose of this invention is to provide in a kind of Fanout design and adjust the method and the device of live width automatically, thereby improve the efficient that live width is adjusted in the Fanout design process effectively, and then improve the efficient of whole PCB design.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the method for adjusting live width in a kind of Fanout design automatically, comprising:
The dimension information of A, acquisition device pad;
B, calculate automatically according to the dimension information of the described device bonding pad of obtaining and to determine fan-out Fanout line width values, and utilize the Fanout line width values of determining that the Fanout live width in the Fanout design is adjusted.
The present invention also provides the method for adjusting live width in a kind of Fanout design automatically, comprising:
The network minimum feature attribute information of the dimension information of C, acquisition device pad and setting;
D, calculate automatically according to the network minimum feature attribute information of the dimension information of the described device bonding pad of obtaining and setting and to determine the Fanout line width values, and utilize the Fanout line width values of determining that the Fanout live width in the Fanout design is adjusted.
Also comprise before the described step C:
Fanout line width values according to acquiescence is carried out the Fanout design operation.
Described step C comprises:
Automatically obtain the dimension information of the device bonding pad of preserving in advance and the minimum feature attribute information of setting.
Described step D comprises:
When pad width during less than the minimum feature value of minimum feature attribute information correspondence, the live width of using pad is as final Fanout live width, when pad width during greater than the minimum feature value, calculate final Fanout live width according to the live width of pad and the line width values of processes requirement, and current Fanout line width values is adjusted into final Fanout live width.
The line width values that described processes requires comprises: satisfy Fanout minimum value minfanout and Fanou maximal value maxfanout that safety in production requires.
Described step D specifically comprises:
Surface Mount pad in the traverses network, and the size of calculating Surface Mount pad;
Size and the Fanout minimum value and the Fanout maximal value that satisfy the safety in production requirement according to described Surface Mount pad, and described minimum feature property value determines final Fanout line width values, and current Fanout line width values is adjusted into described final Fanout line width values.
Wherein, describedly determine that the processing procedure of final Fanout line width values comprises:
The minimum value of the size of the Surface Mount pad of computational grid is counted act and minsize simultaneously;
If act＜=Fanout minimum value minfanout, act1=act-minfanout then, otherwise act1=act*2/3; If act1＞=Fanout maximal value maxfanout, act2=maxfanout then, otherwise act2=act1; If act2＞=minfanout*2/3 and act2＜minfanout, act3=minfanout then, otherwise act3=act2; If act3＜0, act4=act3+minfanout then, otherwise act4=act3; If the minimum feature attribute MIN_LINE_WIDTH of act4＜network, and minsize＞MIN_LINE_WIDTH, act5=MIN_LINE_WIDTH then, otherwise act5=act4;
With the act5 value finally determined as definite Fanout line width values.
The present invention also provides the device of adjusting live width in a kind of Fanout design automatically, comprising:
Parameter acquiring unit is used for the dimension information and the network minimum feature attribute information of acquisition device pad;
Fanout live width determining unit is used for the dimension information of the device bonding pad obtained according to parameter acquiring unit and network minimum feature attribute information and calculates automatically and determine the Fanout line width values;
Fanout live width adjustment unit, the Fanout live width that is used for determining according to Fanout live width determining unit is adjusted the Fanout line width values of Fanout design.
Described device comprises:
Parameter storage unit is used for preserving in advance the dimension information of device bonding pad and the minimum feature attribute information of setting.
In described Fanout live width determining unit:
When pad width during less than the minimum feature value of minimum feature attribute information correspondence, the live width of using device bonding pad is as final Fanout live width; When pad width during greater than the minimum feature value, the line width values that requires according to the live width and the processes of pad calculates final Fanout live width.
As seen from the above technical solution provided by the invention, the present invention promptly all finishes the unified Fanout line width values of adjusting automatically in Fanout design back owing to adopted the dimension information according to pad in the PCB design to carry out the adjustment of the live width of Fanout design automatically.Thereby the present invention can improve the efficient of Fanout design effectively so that the deviser need not manually continually live width manually to be adjusted again.
And, the present invention in implementation procedure in conjunction with automatically the live width of Fanout design being adjusted with reference to network minimum feature attribute and two kinds of factors of device bonding pad size, the result's science, accurately more that makes the Fanout design.
Description of drawings
Fig. 1 is through the PCB design effect synoptic diagram after the Fanout design in the prior art;
Fig. 2 is the PCB design page synoptic diagram of pending Fanout design in the prior art;
Fig. 3 is for carrying out synoptic diagram A after the Fanout design based on the method for minimum feature attribute setting in the prior art;
Fig. 4 is for carrying out synoptic diagram B after the Fanout design based on the method for minimum feature attribute setting in the prior art;
Fig. 5 is the process flow diagram of method of the present invention;
Fig. 6 is for adopting the PCB design effect synoptic diagram before the present invention adjusts the Fanout line width values;
Fig. 7 is for adopting the PCB design effect synoptic diagram after the present invention adjusts the Fanout line width values;
Fig. 8 is the specific implementation structural representation of device of the present invention.
Embodiment
Core of the present invention is when carrying out the Fanout design, setting for needed live width no longer needs to adjust continually by hand, but carry out the adjustment of live width automatically according to the dimension information of minimum feature value and pad, thereby satisfy the needs of the various live widths of carrying out the Fanout design, improved the efficient of Fanout design effectively.
Automatically the method for adjusting live width in the Fanout design of the present invention specifically comprises in the specific implementation process:
(1) information of acquisition device pad;
The information of described device bonding pad comprises: the dimension information of device bonding pad, this information is specially by the width value of evaluating objects device pin pad to be determined, corresponding information can be for preserving in advance, and, also can obtain by real-time analysis with device identification index (promptly just can search the information of determining described device bonding pad) by the device identification index.
(2) calculate definite fan-out Fanout line width values automatically according to the information of the described device bonding pad of obtaining, and the Fanout line width values is adjusted;
Wherein, concrete automatic calculating determines that the method for fan-out Fanout line width values is as follows:
1, determines a network;
2, judge and travel through Surface Mount pad in this network, promptly be positioned at the pad of Top (top layer) and Bottom (bottom);
3, calculate the size of Surface Mount pad, specifically can calculate according to rectangle, draw that it is long, the minimum value in wide is counted act;
4, the Fanout line width values that described act value is determined as calculating.
For improving the effect of the present invention in specific implementation, the method for adjusting live width in the Fanout design of the present invention automatically can also adopt mode shown in Figure 5 to realize, specifically comprises:
Step 51: the minimum Fanout line width values according to acquiescence is carried out the Fanout design operation;
Step 52: the minimum feature attribute information of the information of acquisition device pad and setting;
Be specially, obtain in advance the information of the device bonding pad of preserving automatically, and the minimum feature attribute information that sets in advance, the information of wherein said device bonding pad also can be for real-time analysis obtains, and for example, the width value by evaluating objects device pin pad obtains; The setting of described minimum feature attribute information is to combine the numerical value that network type is set;
Step 53: calculate definite Fanout line width values automatically according to the information of the described device bonding pad of obtaining and the minimum feature attribute information of setting;
Be specially: when pad width the time, use the width of the width of pad,, use value that pad width and processes require as the Fanout width when pad width the time greater than the minimum feature value as Fanout less than the minimum feature value;
Wherein, concrete automatic calculating determines that the method for fan-out Fanout line width values is as follows:
1, the Fanout minimum value and the maximal value of pre-defined satisfied safety in production are defined as minfanout and maxfanout respectively, and the minimum feature attribute definition of network is MIN_LINE_WIDTH;
2, determine a network;
3, judge and travel through Surface Mount pad in this network, promptly be positioned at the pad of Top (top layer) and Bottom (bottom);
4, calculate the size of Surface Mount pad, specifically can calculate according to rectangle, it is long to draw it, minimum value in wide, count act and minsize simultaneously, wherein the value of act will be adjusted in subsequent treatment, is adjusted into act1, act2, act3, act4 and act5, and the minsize value will remain unchanged always and use in order to subsequent treatment;
If 5 act＜=minfanout, act1=act-minfanout so, otherwise act1=act*2/3;
6, the act value of calculating based on step 5, if act1＞=maxfanout, act2=maxfanout so, otherwise act2=act1;
7, the act value of calculating based on step 6, if act2＞=minfanout*2/3 and act2＜minfanout, act3=minfanout so, otherwise act3=act2;
8, the act value of calculating based on step 7, if act3＜0, act4=act3+minfanout so, otherwise act4=act3;
9, the act value of calculating based on step 8, if act4＜MIN_LINE_WIDTH and minsize＞MIN_LINE_WIDTH, act5=MIN_LINE_WIDTH so, otherwise act5=act4;
Afterwards, with the act value finally determined as definite Fanout line width values.
Step 54: adjust according to the Fanout line width values in the PCB design of the Fanout line width values of determining after to the Fanout designing treatment.
Method of the present invention can realize for the DLL (dynamic link library) that provides based on PCB (printed-wiring board (PWB)) design tool, as Allegro software (a kind of software that is used to design PCB).
The present invention also provides the device of adjusting live width in a kind of Fanout design automatically, and its specific implementation structure specifically comprises as shown in Figure 8:
(1) parameter storage unit, the minimum feature attribute information of the information of the device bonding pad that is used for preserving in advance and setting;
(2) parameter acquiring unit is used for the information and the network minimum feature attribute information of acquisition device pad, can read from described parameter storage unit;
(3) Fanout live width determining unit is used for the information of the device bonding pad obtained according to parameter acquiring unit and network minimum feature attribute information and calculates automatically and determine the Fanout line width values;
Described Fanout live width determining unit comprises:
When pad width during less than the minimum feature value of minimum feature attribute information correspondence, the live width of using device bonding pad is as final Fanout live width; When pad width during, use the live width of pad and line width values that processes requires as final Fanout live width greater than the minimum feature value.
(4) Fanout live width adjustment unit, the Fanout live width that is used for determining according to Fanout live width determining unit is adjusted the Fanout line width values of Fanout design.
In sum, can be neatly in the method provided by the invention adjust the result's science, accurately more that makes the Fanout design automatically to the live width of Fanout design with reference to network minimum feature attribute and two kinds of factors of device bonding pad size.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (11)
1. adjust the method for live width during a Fanout designs automatically, it is characterized in that, comprising:
The dimension information of A, acquisition device pad;
B, calculate automatically according to the dimension information of the described device bonding pad of obtaining and to determine fan-out Fanout line width values, and utilize the Fanout line width values of determining that the Fanout live width in the Fanout design is adjusted.
2. adjust the method for live width during a Fanout designs automatically, it is characterized in that, comprising:
The network minimum feature attribute information of the dimension information of C, acquisition device pad and setting;
D, calculate automatically according to the network minimum feature attribute information of the dimension information of the described device bonding pad of obtaining and setting and to determine the Fanout line width values, and utilize the Fanout line width values of determining that the Fanout live width in the Fanout design is adjusted.
3. adjust the method for live width in the Fanout design according to claim 2 automatically, it is characterized in that, also comprise before the described step C:
Fanout line width values according to acquiescence is carried out the Fanout design operation.
4. according to the method for adjusting live width in claim 2 or the 3 described Fanout designs automatically, it is characterized in that described step C comprises:
Automatically obtain the dimension information of the device bonding pad of preserving in advance and the minimum feature attribute information of setting.
5. adjust the method for live width in the Fanout design according to claim 4 automatically, it is characterized in that described step D comprises:
When pad width during less than the minimum feature value of minimum feature attribute information correspondence, the live width of using device bonding pad is as final Fanout live width; When pad width during greater than the minimum feature value, the line width values that requires according to the live width and the processes of pad calculates final Fanout live width, and the current Fanout line width values that will carry out behind the Fanout design operation is adjusted into described final Fanout live width.
6. adjust the method for live width in the Fanout design according to claim 5 automatically, it is characterized in that the line width values that described processes requires comprises: satisfy Fanout minimum value minfanout and Fanout maximal value maxfanout that safety in production requires.
7. adjust the method for live width in the Fanout design according to claim 6 automatically, it is characterized in that described step D specifically comprises:
Surface Mount pad in the traverses network, and the size of calculating Surface Mount pad;
Size and the Fanout minimum value and the Fanout maximal value that satisfy the safety in production requirement according to described Surface Mount pad, and described minimum feature property value determines final Fanout line width values, and current Fanout line width values is adjusted into final Fanout line width values.
8. adjust the method for live width in the Fanout according to claim 7 design automatically, it is characterized in that, describedly determine that the processing procedure of final Fanout line width values comprises:
The minimum value of the size of the Surface Mount pad of computational grid is counted act and minsize simultaneously;
If act＜=Fanout minimum value minfanout, act1=act-minfanout then, otherwise act1=act*2/3; If act1＞=Fanout maximal value maxfanout, act2=maxfanout then, otherwise act2=act1; If act2＞=minfanout*2/3 and act2＜minfanout, act3=minfanout then, otherwise act3=act2; If act3＜0, act4=act3+minfanout then, otherwise act4=act3; If the minimum feature attribute MIN_LINE_WIDTH of act4＜network, and minsize＞MIN_LINE_WIDTH, act5=MIN_LINE_WIDTH then, otherwise act5=act4;
With the act5 value finally determined as definite Fanout line width values.
9. adjust the device of live width during a Fanout designs automatically, it is characterized in that, comprising:
Parameter acquiring unit is used for the dimension information and the network minimum feature attribute information of acquisition device pad;
Fanout live width determining unit is used for the dimension information of the device bonding pad obtained according to parameter acquiring unit and network minimum feature attribute information and calculates automatically and determine the Fanout line width values;
Fanout live width adjustment unit, the Fanout live width that is used for determining according to Fanout live width determining unit is adjusted the Fanout line width values of Fanout design.
10. adjust the device of live width in the Fanout design according to claim 9 automatically, it is characterized in that described device comprises:
Parameter storage unit is used for preserving in advance the dimension information of device bonding pad and the minimum feature attribute information of setting.
11. the device according to adjusting live width in claim 9 or the 10 described Fanout designs automatically is characterized in that described Fanout live width determining unit:
When pad width during less than the minimum feature value of minimum feature attribute information correspondence, the live width of using device bonding pad is as final Fanout live width; When pad width during greater than the minimum feature value, the line width values that requires according to the live width and the processes of pad calculates final Fanout live width.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100724422A CN100416581C (en) | 2006-04-13 | 2006-04-13 | Method and device for automatically adjusting Fanout design line width |
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|---|---|---|---|
| CNB2006100724422A CN100416581C (en) | 2006-04-13 | 2006-04-13 | Method and device for automatically adjusting Fanout design line width |
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| CN100416581C true CN100416581C (en) | 2008-09-03 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI470464B (en) * | 2012-09-12 | 2015-01-21 | Wistron Corp | Circuit design simulation system and curcuit design method for pcb |
| CN104715089B (en) * | 2013-12-16 | 2018-06-22 | 北京华大九天软件有限公司 | Determine resistance value wiring implementation method in a kind of flat-panel monitor design |
| CN108446527A (en) * | 2018-05-29 | 2018-08-24 | 郑州云海信息技术有限公司 | The method and device of routing line width in a kind of inspection PCB design |
| CN113779925B (en) * | 2021-11-10 | 2022-01-28 | 杭州捷配信息科技有限公司 | Minimum line width calculation method and device suitable for PCB engineering file and application |
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| US4893346A (en) * | 1985-03-14 | 1990-01-09 | Beltronics, Inc. | Apparatus for automatically inspecting objects and identifying or recognizing known and unknown portions thereof, including defects and the like, and method |
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| CN1404135A (en) * | 2001-09-07 | 2003-03-19 | 富士通株式会社 | Semiconductor device capable of depressing current concentration on welding pad and producing method thereof |
| WO2006013772A1 (en) * | 2004-08-02 | 2006-02-09 | Matsushita Electric Industrial Co., Ltd. | Flexible printed-circuit board |
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2006
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893346A (en) * | 1985-03-14 | 1990-01-09 | Beltronics, Inc. | Apparatus for automatically inspecting objects and identifying or recognizing known and unknown portions thereof, including defects and the like, and method |
| CN1283954A (en) * | 1999-08-09 | 2001-02-14 | 三星电子株式会社 | Printed circuit board and mask of screen printing such printed circuit bard |
| CN1404135A (en) * | 2001-09-07 | 2003-03-19 | 富士通株式会社 | Semiconductor device capable of depressing current concentration on welding pad and producing method thereof |
| WO2006013772A1 (en) * | 2004-08-02 | 2006-02-09 | Matsushita Electric Industrial Co., Ltd. | Flexible printed-circuit board |
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