Dear (current) Xilinx user,
We design boards that are manufactured in quantity elsewhere, and we depend on easy and quick availability of prototype and pre-production quantities. Particularly for FPGAs, where there are multiple parts in identical packages, we often need to try one size up (for capacity) or one size down (for cost) quickly. We also build small runs of boards for customer approval, always on short turn-around.
The message from Xilinx seems to be that they don't want to bother with anyone that is not also directly responsible for the manufacture (i.e. have the distribution relationships). Spartan 3 parts were formerly available even in pre-production quantities through the web store, and it offered excellent service (so good it was definitely a plus factor in designing in Xilinx parts).
Without the web store, there are today exactly zero distributors that currently have, or can obtain in any reasonable time, the Spartan 3 parts we are using. This is true whether it is from a 200mm fab or
300mm fab. I'm sure with a good distribution relationship there are strings that could be pulled to get something more quickly. However, I'm not sure why we would want to spend time and use up favors for something that should be readily available overnight in small quantities.
It is a week since Xilinx's own representative said he would try and find out if/when the product would be available, and no news looks like very bad news. To cut off supply with no notice, and fail to make any reasonable arrangements with alternative distribution, makes us nervous about continuing to incorporate Xilinx parts even if they do sort this situation out. Our customers expect us to select components from reliable suppliers that won't change the rules in the middle of the game.
Despite their persistent enthusiasm, we have always declined to meet with our local Altera rep because, despite the odd hiccup, we were pretty satisfied with the Xilinx solution. My understanding is that Altera are more committed to multiple distribution channels and generally superior product availability (any satisfied / dissatisfied Altera purchasers out there to comment?).
While hoping that the Xilinx situation will improve quickly and dramatically, past experience with semiconductor suppliers that take their eye off the ball is that one bad decision is quickly followed by others, and it is wise to start looking at alternatives.