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Date: | Mon, 7 Nov 2011 14:04:43 -0700 |
Message-ID: | <CAN0Jx-8WVgStP=DPZBAZoZEv4+qqCV-+KwaS5Xo3EY+3URBrLw@mail.gmail.com> |
Subject: | Re: [geda-user] PCIe card? |
From: | Russell Dill <Russ DOT Dill AT asu DOT edu> |
To: | geda-user AT delorie DOT com |
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> One idea I had for a quick start was to lay out and edit a PCB with > the differential pairs replaced by fat single traces of thickness (2 * > differential trace copper thickness + differential trace internal > spacing). Â A fairly simple bit of code could later convert these from > fat single traces to differential pairs. BTW, it isn't really necessary to route differential traces this way. Rather than route them with a very tightly regulated spacing, you can route them instead with a minimum spacing as single ended traces, which is much easier. Just be sure they have equal lengths impedances.
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