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Altera_Forum's avatar
Altera_Forum
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13 years ago

FPGA remote upgrade question

Hello, I'm designing a PCB with a Cyclone IV FPGA on it. It will connect to another board with a CPU via an SPI bus. I need to enable a remote upgrade of the FPGA image by the CPU. I read the Conf...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Thank you for your help.

Yes, I'll use an EPCS device.

Just to make sure that I fully understand: The CPU will send the image to the FPGA (the FPGA being the SPI slave on that part) and the FPGA will transfer the image bits directly to the EPCS device (the FPGA being the SPI master)? The FPGA pins that are connected to the EPCS always can be used as GPIOs for that matter?

Is there a specific address in the EPCS that I need to write the image to?

After the new image is fully transferred to the EPCS how do I tell the FPGA to re-load the image?