A layout engineer who studies signal integrity
often reuses previous reference designs or copies one of the modules when designing PCBs. Because the previous design has been tested and verified, there is no need to re-layout some of the same modules. Avoid introducing unknown problems, but when importing or exporting this module, some network disconnection situations are often encountered. For example, when we export and import the layout, because of different design units or inconsistent design rules, the following situation will occur: there will
be various small flying leads. If we do not want to change the layout or the device layout is reasonable, we You can use the following commands to operate:
Step 1: Derive connectivity
Select the Tools command under the Allegro menu, click Derive connectivity, and the following dialog box will pop up:
The second step: convert lines to connect lines
To connect the flying wires, generally check the first two commands, click OK, and you can see that the flying wires disappear, as shown in the figure below:
Previous article: Cadence Allegro PCB Design 88 Question Analysis (25) Exchange in Allegro The link of the pin network (switch device pin) is as follows, you can click to view it: link: link
The above information is mainly compiled by myself in PCB design and Internet search. If there
is any similarity or error, I hope you will leave a message and correct me, thank you! ! !
