On Fri, Jun 16, 2017 at 3:47 AM, Neil Jansen njansen1@gmail.com wrote:
so.. you can see, the right-hand pads are really *really* close to the edge of the PCB. so for that exact same reason it's impossible to bring the tracks in on the top layer.
OK so if I were laying that out, I wouldn't ever put a via in the middle of a pad,
there's not really any other options: you can see how little clearance there is to the edge of the board: it's flat-out impossible to bring tracks in either in between those two sets, or round the back... and you don't want to anyway: they're differential pairs (up to 1ghz clock rate) because this is HDMI.
not a full time electrical engineer, I only do hobby boards in quantities of less than 100. Tomorrow I'll ask around at work to see if any of the EE's have any advice. They do all sorts of crazy things in a production environment that I would never dream of.
there's a way - it just has to be found.
l.