A layout engineer who studies signal integrity simulation
often reuses the wiring, layout, copper laying, or some structural shapes of other single boards when designing PCBs. As long as the design content in the board can be imported and exported through Sub-Drawing. This operation is very practical in our daily design, but if you want to import and export some net wiring, via holes or copper sheets, remember to check Keep Net. The following is a brief introduction to the use of Sub-Drawing;
1. Select the File command under the Allegro menu, click Export, and select Sub-Drawing, as shown in the figure below:
Several options will pop up in the option dialog box, which can be checked as needed, as shown in the figure below:
2. We need to import the traces and vias of the MCU part of this single board into another single board. Use the Team Group method to select all the traces, vias, etc. we need. After the selection is completed, there is a right-click Select Complete, as shown in the figure below:
3. After selecting all the designs we want to export, we need to select a base point, which is the common position of the two boards, so that the design that can be easily exported and imported can be used and remains exactly the same without DRC. We choose a PIN in the MCU as the base point for export and import, as shown in the figure below:
After the selection is completed, a dialog box for saving the .clp file will pop up. Let us save it, as shown in the figure below:
4. When we open another board, we can see that there is no layout in the MCU part, and then import the Sub-Drawing. Select the File command under the Allegro menu, click Import, and select Sub-Drawing, as shown in the following figure:
At this time, you can see the following interface pop up. The standard in it is the Sub-Drawing we just exported. We select it, click OK, and we will see that the design has been imported. We are selecting a pin of the MCU exported just now as the base point, as shown in the figure below:
At this point you can see that Sub-Drawing has been imported successfully and there is no DRC, as shown in the figure below:
Previous article: Cadence Allegro PCB design 88 questions analysis (31) The link to the print (Plot) settings in Allegro is as follows, you can click to view it, link: link The above information is mainly from my own PCB design and Internet
search If
there are any similarities or errors, I hope you can leave a message and correct me. Thank you! ! !
