How To Clear The Xilinx FPGA Configuration

Have you been searching for information on how to clear the Xilinx FPGA configuration? People typically do this in order to allow what is called boundary scan testing. When they are initially configured, it can prevent the boundary scan from actually working. This is because some signals will be blocked, preventing the scan to not work as it should. An example of this would be trying to configure this with what some would would referred to as a blank image. This is not an actual image, but a reference to an un-configured FPGA. By doing so, the boundary scan would occur, as if there is nothing to block it. You are simply tricked the system into doing its job without really fixing the problem.

What If It Does Not Clear Up?

If it doesn’t clear up, there are a couple reasons that may happen. First of all, there could be another issue which is directly linked to the FPGA which is making the scan nearly impossible. You could be working with one that has pull resisters. It just depends on how it is designed, and if they are currently enabled, specifically when the FPGA is an configured, this could cause a problem. These are resisters that are found internally on the FPGA board. If they are enabled, they could be pulling in opposite directions. That is one reason the scan may not work. The other problem is that if they are pulling in the same direction, this can cause an error masking a fault.

What If The Blank Image Strategy Doesn’t Work?

If you are dealing with a blank image problem, and it’s not fixing your issue, then you will need to reconfigure the FPGA. If you can return it to its original state, essentially making it blank, you will get better results if there is a reset command that you can use. If you need to create this, you can use software that will have that type of programming. There is typically a script that you will run, and once it is finished, running the scan is not going to be a problem at all. Of course, you could be trying to clear the FPGA configuration for other reasons, but this is usually why people want to have this done.

Other Options That You Have Available

the other options that you have available will include taking this to a professional that can help you. There are always going to be businesses that provide this type of service. Most of the companies that do this are going to charge a reasonable amount of money. They may even be able to do it for you while you are waiting in the lobby. You could have someone come out, but that could be expensive. Videos are online that you could watch that may also be able to help. If not of this works, you may have to send it back to the company that you purchased it from because it may actually have a fault in the construction of the FPGA device.

If you have not been able to clear the configuration on your field programmable gate array, and you have use the strategies, always contact the seller. They should be able to send another one out to you that is going to allow you to make it clear. If you can’t do this, it’s not going to be possible for you to use it to practice, or even configure, the FPGA the way that you want to. At the very least, you will end up with a new one that will be properly designed that will be very easy to reset each time that you would like to test something new. To know more about FPGA boards contact us or visit the website at http://www.directics.com/xilinx-spartan/.