Anand asked: I am currently designing a printed circuit board in which the main part is a XILINX FPGA. What I want to know is: (please read on) Upon completion of the schematics of the board design do PCB designers do anything to verify the correctness of the board schematics ....like simulation ? Especially where something complex like a XILINX FPGA is involved. do PCB designers simply trust the correctness of the schematic and proceed with PCB placement and routing ? In short ,is any board-level simulation (involving SPICE models or something similar) done before fabrication of the board ?
*********** Hi Anand, Although we do perform simulation on occasions, its not really to verify copper path connections noted in a schematic, but to ascertain that component parameters perform as advertised, or, on the PCB. to examine parasitic or distributed-circuit charac- teristics. And I'll be honest with you... I do NOT do simulations for the physical layout of our boards. I follow good design rules when laying the board out, such as keeping traces far enough apart to prevent too great of crosstalk, using controlled im- pedances when necessary, and keeping ground and power planes close together. I am not saying that you should not perform this sort of simulation. We do very small limited runs. This allows me to add another couple layers if I want to spread things out. In a big production run this would arbitrarily introduce unacceptable added costs, and the price for an effective simulation would probably be worthwhile. good luck, miker ************************************************************************ * Tracking #: 06D2151CAADF5C48870F208E48FFABC7CDE708BE * ************************************************************************ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
