hello, I'm about to layout a circuit for a pcb that includes the Xilinx spartan II-e and external circuitry (simple interface elements), I was wondering if anyone has laid out a PCB using the chip, because I know there are a lot of capacitors and resistors and other elements that are on the development board, and I am not sure what needs to be transfered and what doesn't..
George
Firstly, re read your question. How do you expect a sensible answer with the minute amount of detail you provide !
Anyway, it is better to understand what is going on than copy blindly. Lets play 'twenty questions'.
Do you know what a ground plane is ?
Do you understand what is meant by decoupling - what are all those capacitors and resistors for anyway ?
How many layers will your pcb have ?
What is your clock speed ?
How will your chosen clock speed affect your layout ?
Have you simulated your design - do you know whether it will meet your timing constraints with the pinout you are about to commit to ?
What are you interfacing to - how long and what type of interconnects are used ?
There are lots of articles and Application Notes on topics like these - read and enjoy !
Dave
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