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Old 05-17-2006, 08:25 PM
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Default Cyclone II PCI & Pin Swapping

I'm implementing a PCI104+ board which will have the opencores PCI
bridge core. I've started with the suggested layout from Alteras PCI
Megacore. But the choice of pins does not lend to a really clean
layout. If I swap some of the pins around it will clean up quite a
bit. I'm wondering if I'm asking for timing problems if I do this.
I'm only planning to run the PCI at a leasurely 33Mhz, so I'm guessing
it won't be a problem, as long as I keep it in the same pair of banks
(5 & 6). Any thoughts or suggestions?

Many thanks

Joey

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Old 05-18-2006, 01:17 AM
Paul Leventis
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Default Re: Cyclone II PCI & Pin Swapping

As long as you have the right timing constraints in Quartus II, swap
around the pins and give it a whirl. 33 Mhz PCI is pretty easy to meet
in any Cyclone II device.

Regards,

Paul Leventis
Altera Corp.

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