Re: What software do you use for PCB with FPGA ?

secureasm@xxxxxxxxx writes:

Hi,

I have to make a PCB using BGA pinout for FPGA.

What brand of software do you use ?

Place Route manually or automatically ?


Manual placement. It's usually the placement that messes things up.

Automatic routing, with timing constraints, and in some cases some
"guidance": a routing scheme which made the router do the hard bits
first. The benefit (for me) is that I can rip the whole board up and
have it rerouted within a couple of hours. Which is useful when
someone says "can you add ethernet to that board?" when I've just
"finished"...

An autorouter won't be as pretty as a manually routed board, and it
*may* use more layers (but that's not a given), so if you are planning
high-volumes the trade-off might be worth it. But think carefully
about what you gain from a good autoroute setup in terms of design
flexibility. Of course, if your designs are all well specced up front
and no-one ever changes their mind, it's no problem :)

But, as someone else said - you need a *good* autorouter

Which plans to use and how ?

For the width of the tracks ?


That depends on all sorts of things - do you want controlled impedance
tracks? How many are you making - what yield do you want?

Cheers,
Martin

--
martin.j.thompson@xxxxxxx
TRW Conekt - Consultancy in Engineering, Knowledge and Technology
http://www.conekt.net/electronics.html
.

Relevant Pages

  • Re: What software do you use for PCB with FPGA ?
    ... It seems that all producers of software pcb, ... Autorouters do automatic routing as advertised. ... Sometimes you can let an autorouter do part of the job. ... design and I didn't expect the tool to be able to complete it at all, ...
    (comp.arch.fpga)
  • Re: What software do you use for PCB with FPGA ?
    ... gives us the lowest price on design projects. ... route 600 or more tracks on multilayer PCB. ... Then you need to find out what clearances, traces width, hole sizes, ... To get to the autorouter part: Most people I know draw traces by hand. ...
    (comp.arch.fpga)
  • Re: PCB Layout Designers
    ... I'm a one-man band when it comes to circuit and pcb design, ... I treat my autorouter like a dog on a chain... ...
    (sci.electronics.design)
  • Re: What software do you use for PCB with FPGA ?
    ... There are a wide range of tools with price tags from low to very high. ... As yet I have not been convinced that an autorouter can do as a good a ... Hand routing is very close up ... gives us the lowest price on design projects. ...
    (comp.arch.fpga)
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