On my current design, I want to set a width rule for some nets which provide power in order to get them fatter. I set a net class on the net,set a rule and it works pretty well.
Now, this net is also used as an input on a ADC pin of a microcontroler. The first thing is that I don't need a fat connenter image description hereection for this purpose, the second is that there's no way to connect a fat line to only one pin on the microcontroler.
Is there a way to exclude a part of the net class from the rule ? Or a specific rule but based on which information ?
Here are two screenshots for illustration purpose.
Answer
Three approaches:
- Use a net-tie: A net tie will create two distinct nets (each has its own name) but they are actually joined. Information on how to create & use a net tie can be found here.
- Use a 0R resistor. Again, this will create an additional net.
- Scope your rules so that they target only specific areas. You can either target your rule to only apply within a specific room or within specific coordinates on your board.
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