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On the SSO issue. One thing you can do to reduce this problem, is tone down the output drivers. By default Quartus puts very strong output drivers, but you can make them 2 mA drivers, which will go along way. Still worth insuring minimal simultaneous switching, but it helps a-lot.
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Thanks for the input, I'll definitely take advantage of the lower output drivers. I'm currently debating whether to run the bulk of the I/O at 2.5 or 3.3V (the SD card needs 3.3V and I'm attracted to the simplicity of having them all be the same).
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I didn't look at your layout, but it would be interesting to know how it works in the end.
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I'll definitely keep you all posted. If all goes well (and maybe even if it doesn't!) the Discovery Channel will be shooting the end of the process next month for a show called Daily Planet, so you may get a chance to see things come together on screen.
I appreciate everyone's input. I'm still working on this so I of course welcome any more ideas!
Thanks,
-JNS.
Honored Contributor
