You definately need 7 layers to get all the balls of the big FPGA out, unless you use blind vias, which increases the price of the PCB, in some cases by a factor of 2 or more.
Howard On 3/7/06, Timothy Miller <[EMAIL PROTECTED]> wrote: > On 3/7/06, Piete Sartain <[EMAIL PROTECTED]> wrote: > > > said (Tim, you might want to look at what we're proposing here and make > > sure it's ok with Traversal), if you should be on the list of people > > doing stuff (I'm a bit OC on getting details correct) then please let me > > know! > > It's cool that you're doing this. My priority right now is verifying > the correctness of the design, regardless of what tools we used. I am > assuming that in the process of doing this conversion, you will > discover bugs in the design. > > Note that I believe the reason Howard chose to use proprietary tools > was that be felt that the artwork would require more PCB layers than > are supported by the open tools. Just keep this in mind if you decide > to take on the challenge of converting the artwork too. > > (Hypothetically, it may be possible to do what we're doing with fewer > layers, but there are always signal integrity issues to consider.) > _______________________________________________ > Open-graphics mailing list > [email protected] > http://lists.duskglow.com/mailman/listinfo/open-graphics > List service provided by Duskglow Consulting, LLC (www.duskglow.com) > _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
