Virtex-6 XC6VLX195T device

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My I/O requirements are max pins needed 549.

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If you look at Table 1-1 in the Stratix IV handbook, there are several GX devices with in excess of 549 user I/Os. Table 1-4 shows there are also several E series devices with enough pins too.

The GX devices have high-speed transceivers, as do the more expensive GT devices. If you do not need the transceivers, then look at the E series resources to see if they meet your needs.

Cheers,

Dave